# AQI.news

> AQI.news is a free, real-time global air quality intelligence platform. It tracks the Air Quality Index (AQI), pollutant concentrations (PM2.5, PM10, O3, NO2, SO2, CO), associated health impacts, and environmental conditions for locations worldwide.

AQI.news helps people understand the air they breathe. It surfaces live AQI readings, pollutant breakdowns, health-risk guidance, and historical trends through an interactive dashboard, alongside a sourced reference library covering pollutants, exposure limits and respiratory protection. The service is free to use and requires no account.

Content last updated: 2026-08-04.

## Key facts

- Name: AQI.news
- Category: Health & Environment / Air Quality Monitoring
- Cost: Free, no account required
- Coverage: Global, real-time
- Metrics: AQI, PM2.5, PM10, O3 (ozone), NO2, SO2, CO
- AQI scale: Headline live city values are reported on the US EPA AQI scale
- Data sources: Open-Meteo CAMS air-quality forecast model and OpenAQ ground stations
- Audience: General public, people with respiratory conditions, outdoor workers, parents, travellers, researchers

## Core pages

- [Home](https://aqi.news/): The interactive real-time AQI dashboard — global air quality data, pollutant breakdowns (PM2.5, PM10, O3, NO2, SO2, CO), health guidance, pollution map and location search.
- [Air Quality by City](https://aqi.news/aqi): Directory of real-time Air Quality Index pages for cities across India and worldwide. Each city page shows live AQI, a full pollutant breakdown, health advice and a 7-day trend.
- [Compare Cities](https://aqi.news/compare): Compare real-time air quality and pollutant levels across multiple cities side by side.
- [Air Quality Reference Library](https://aqi.news/learn): Sourced guides to AQI, pollutants, occupational dust, respirators, WHO guidelines and India air-quality standards.
- [Articles](https://aqi.news/blogs): Practical, research-backed articles explaining AQI, pollution and cleaner daily habits.

## AQI fundamentals

- [What Is AQI? Air Quality Index Explained](https://aqi.news/learn/what-is-aqi): AQI converts pollutant measurements into a color-coded health scale. Learn what the number means, how it is calculated, and why AQI systems differ.
- [AQI Scale: Categories, Colors and Health Meaning](https://aqi.news/learn/aqi-scale): Understand the US AQI scale from Good to Hazardous, including category ranges, colors, health meaning and practical precautions.
- [PM2.5 vs PM10: Size, Sources and Health Differences](https://aqi.news/learn/pm25-vs-pm10): Compare PM2.5 and PM10 by particle size, sources, health relevance, guideline values and what each reading means.

## Air-quality tools

- [US AQI Calculator for PM2.5, PM10, Ozone and Gases](https://aqi.news/tools/aqi-calculator): Estimate US AQI sub-indices for PM2.5, PM10, ozone, carbon monoxide, nitrogen dioxide and sulfur dioxide.
- [Air Pollution to Cigarettes Calculator: How Many a Day Are You Smoking?](https://aqi.news/tools/cigarette-equivalent): Convert your city’s PM2.5 level into an equivalent number of cigarettes per day using the Berkeley Earth rule of thumb, and see what the comparison does and does not mean.
- [Personal PM2.5 Exposure Calculator: What You Actually Breathe](https://aqi.news/tools/personal-exposure): Estimate the PM2.5 dose you actually inhale across a day, adjusted for commute mode, hours outdoors, indoor filtration and mask use — rather than assuming you breathe the outdoor reading.
- [Lung Age Estimator: How Air Pollution Ages Your Lungs](https://aqi.news/tools/lung-age): Estimate how many years of additional lung ageing long-term PM2.5 exposure may represent, based on your city, years lived there, and household and activity factors.
- [Air Pollution Cost Calculator: What Bad Air Costs You Every Year](https://aqi.news/tools/pollution-cost): Estimate the annual productivity and health cost of breathing polluted air, based on your city’s PM2.5, your salary, job type, time outdoors and years of residence.

## Pollutants

- [PM2.5: Meaning, Sources, Health Effects and Guidelines](https://aqi.news/pollutants/pm25): Learn what PM2.5 is, where fine particles come from, how they affect health, and the WHO guideline values for annual and daily exposure.
- [PM10: Meaning, Sources, Health Effects and Guidelines](https://aqi.news/pollutants/pm10): Learn what PM10 is, how it differs from PM2.5, common dust and combustion sources, health effects, and WHO guideline values.
- [Ground-Level Ozone: Sources, Smog and Health Effects](https://aqi.news/pollutants/ozone): Understand how ground-level ozone forms, why it differs from the protective ozone layer, its health effects and WHO guideline values.
- [Nitrogen Dioxide (NO₂): Sources, Health Effects and AQI](https://aqi.news/pollutants/nitrogen-dioxide): Learn where nitrogen dioxide comes from, how it affects breathing, how it contributes to ozone and particles, and how NO₂ is used in AQI.
- [Sulfur Dioxide (SO₂): Sources, Health Effects and AQI](https://aqi.news/pollutants/sulfur-dioxide): Understand sulfur dioxide sources, respiratory effects, particle formation and how SO₂ readings relate to air-quality indexes.
- [Carbon Monoxide (CO): Sources, Symptoms and AQI](https://aqi.news/pollutants/carbon-monoxide): Learn why carbon monoxide is dangerous, common indoor and outdoor sources, warning symptoms and how CO is represented in AQI.

## Standards and guidelines

- [WHO Air Quality Guidelines: 2021 Pollutant Levels](https://aqi.news/standards/who-air-quality-guidelines): Reference the WHO 2021 guideline levels for PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide.
- [India Air Quality Standards and CPCB AQI Categories](https://aqi.news/standards/india-air-quality-standards): Understand India’s National Ambient Air Quality Standards and CPCB AQI categories for PM2.5, PM10, ozone, gases and health communication.

## Occupational dust and fumes

- [Construction Dust: Sources, Risks and Exposure Controls](https://aqi.news/dust/construction-dust): A practical reference to construction dust sources, silica risks, wet methods, local exhaust and respiratory-protection limits.
- [Cement Dust: Health Effects and Workplace Controls](https://aqi.news/dust/cement-dust): Learn how cement dust affects eyes, skin and breathing, how silica can change the risk, and which controls reduce exposure.
- [Textile Dust: Cotton Dust, Lung Risks and Controls](https://aqi.news/dust/textile-dust): Understand cotton and textile dust exposure, byssinosis, endotoxin concerns, ventilation and workplace respiratory protection.
- [Mining Dust: Respiratory Risks and Dust Controls](https://aqi.news/dust/mining-dust): Learn about respirable coal, silica and mineral dust, black lung and silicosis, and the controls used in mines and tunnels.
- [Welding Fumes: Hazards, Ventilation and Respirators](https://aqi.news/dust/welding-fumes): Understand what welding fumes contain, how metal and process change the risk, and why local exhaust is central to exposure control.
- [Silica Dust: Health Risks, High-Exposure Tasks and Controls](https://aqi.news/dust/silica-dust): A sourced guide to respirable crystalline silica, silicosis, lung cancer risk, high-dust tasks and effective engineering controls.

## Respirator guides

- [N95 Respirators: Filtration, Fit and Correct Use](https://aqi.news/respirators/n95): Learn what N95 means, which particles it can filter, why fit matters, and where an N95 does not provide protection.
- [N99 Respirators: Higher Filtration and Practical Limits](https://aqi.news/respirators/n99): Understand the N99 rating, its filtration difference from N95, oil limitation, fit requirements and breathing-resistance tradeoffs.
- [FFP2 Respirators: European Rating, Fit and Limitations](https://aqi.news/respirators/ffp2): Learn what the European FFP2 class means, how it differs from N95, why certification and fit matter, and what it cannot filter.
- [FFP3 Respirators: Higher Particle Protection and Fit](https://aqi.news/respirators/ffp3): Understand the European FFP3 class, when higher particle protection may be selected, and the fit and hazard limits that still apply.
- [P100 Respirators: Filtration, Oil Resistance and Use](https://aqi.news/respirators/p100): Learn what P100 means, its 99.97% minimum test efficiency, oil resistance, common formats and important limitations.
- [Reusable Respirators: Filters, Cartridges and Maintenance](https://aqi.news/respirators/reusable-respirators): A guide to elastomeric half- and full-face respirators, particle filters, chemical cartridges, fit testing and maintenance.

## Articles

- [The Air Your Children Are Breathing: What Parents in Indian Cities Need to Know](https://aqi.news/blogs/air-pollution-children-india-parents-guide): Children breathe more air per kg of body weight than adults. In Indian cities with high AQI, this matters more than parents realize. Here's the data and what you can do.
- [The Cities That Breathed Again: Clean Air Success Stories From Around the World](https://aqi.news/blogs/cities-that-cleaned-their-air): From Beijing to Bogotá, discover how cities dramatically reduced air pollution through policy, technology, and community action. Data-backed stories of clean air wins.
- [Delhi's Invisible Winter: What Really Happens to the Air Between October and February](https://aqi.news/blogs/delhi-winter-air-quality-explained): Delhi's winter air crisis is more than just stubble burning. Here's the full, honest picture of what drives AQI above 400 every year - and what's being done about it.
- [India's Air Quality Divide: Why Mumbai, Bangalore, and Kolkata Experience Pollution So Differently](https://aqi.news/blogs/india-air-quality-city-comparison): Air pollution in India isn't uniform. Explore how geography, industry, seasons, and urban planning create wildly different AQI realities across Indian cities.
- [The AQI Number You've Been Misreading (And What It Actually Means for Your Body)](https://aqi.news/blogs/the-aqi-number-youve-been-misreading): What does an AQI of 147 actually do to your body? Understand the Air Quality Index scale, its six health categories, why PM2.5 matters most, and when N95 masks help.

## City air quality pages

Live AQI, pollutant breakdown, health guidance and a 7-day trend for each city. Full list: https://aqi.news/aqi

- [Delhi air quality](https://aqi.news/aqi/delhi): Live AQI and PM2.5 for Delhi, National Capital Territory of Delhi, India.
- [New Delhi air quality](https://aqi.news/aqi/new-delhi): Live AQI and PM2.5 for New Delhi, National Capital Territory of Delhi, India.
- [Mumbai air quality](https://aqi.news/aqi/mumbai): Live AQI and PM2.5 for Mumbai, Maharashtra, India.
- [Bengaluru air quality](https://aqi.news/aqi/bengaluru): Live AQI and PM2.5 for Bengaluru, Karnataka, India.
- [Hyderabad air quality](https://aqi.news/aqi/hyderabad): Live AQI and PM2.5 for Hyderabad, Telangana, India.
- [Chennai air quality](https://aqi.news/aqi/chennai): Live AQI and PM2.5 for Chennai, Tamil Nadu, India.
- [Kolkata air quality](https://aqi.news/aqi/kolkata): Live AQI and PM2.5 for Kolkata, West Bengal, India.
- [Pune air quality](https://aqi.news/aqi/pune): Live AQI and PM2.5 for Pune, Maharashtra, India.
- [Ahmedabad air quality](https://aqi.news/aqi/ahmedabad): Live AQI and PM2.5 for Ahmedabad, Gujarat, India.
- [Gurugram air quality](https://aqi.news/aqi/gurugram): Live AQI and PM2.5 for Gurugram, Haryana, India.
- [Agra air quality](https://aqi.news/aqi/agra): Live AQI and PM2.5 for Agra, Uttar Pradesh, India.
- [Amravati air quality](https://aqi.news/aqi/amravati): Live AQI and PM2.5 for Amravati, Maharashtra, India.
- [Amritsar air quality](https://aqi.news/aqi/amritsar): Live AQI and PM2.5 for Amritsar, Punjab, India.
- [Asansol air quality](https://aqi.news/aqi/asansol): Live AQI and PM2.5 for Asansol, West Bengal, India.
- [Aurangabad air quality](https://aqi.news/aqi/aurangabad): Live AQI and PM2.5 for Aurangabad, Maharashtra, India.
- [Belagavi air quality](https://aqi.news/aqi/belagavi): Live AQI and PM2.5 for Belagavi, Karnataka, India.
- [Bhavnagar air quality](https://aqi.news/aqi/bhavnagar): Live AQI and PM2.5 for Bhavnagar, Gujarat, India.
- [Bhopal air quality](https://aqi.news/aqi/bhopal): Live AQI and PM2.5 for Bhopal, Madhya Pradesh, India.
- [Bhubaneswar air quality](https://aqi.news/aqi/bhubaneswar): Live AQI and PM2.5 for Bhubaneswar, Odisha, India.
- [Chandigarh air quality](https://aqi.news/aqi/chandigarh): Live AQI and PM2.5 for Chandigarh, Chandigarh, India.
- [Coimbatore air quality](https://aqi.news/aqi/coimbatore): Live AQI and PM2.5 for Coimbatore, Tamil Nadu, India.
- [Cuttack air quality](https://aqi.news/aqi/cuttack): Live AQI and PM2.5 for Cuttack, Odisha, India.
- [Dhanbad air quality](https://aqi.news/aqi/dhanbad): Live AQI and PM2.5 for Dhanbad, Jharkhand, India.
- [Faridabad air quality](https://aqi.news/aqi/faridabad): Live AQI and PM2.5 for Faridabad, Haryana, India.
- [Gandhinagar air quality](https://aqi.news/aqi/gandhinagar): Live AQI and PM2.5 for Gandhinagar, Gujarat, India.
- [Ghaziabad air quality](https://aqi.news/aqi/ghaziabad): Live AQI and PM2.5 for Ghaziabad, Uttar Pradesh, India.
- [Guntur air quality](https://aqi.news/aqi/guntur): Live AQI and PM2.5 for Guntur, Andhra Pradesh, India.
- [Guwahati air quality](https://aqi.news/aqi/guwahati): Live AQI and PM2.5 for Guwahati, Assam, India.
- [Gwalior air quality](https://aqi.news/aqi/gwalior): Live AQI and PM2.5 for Gwalior, Madhya Pradesh, India.
- [Howrah air quality](https://aqi.news/aqi/howrah): Live AQI and PM2.5 for Howrah, West Bengal, India.
- [Hubballi-Dharwad air quality](https://aqi.news/aqi/hubballi-dharwad): Live AQI and PM2.5 for Hubballi-Dharwad, Karnataka, India.
- [Indore air quality](https://aqi.news/aqi/indore): Live AQI and PM2.5 for Indore, Madhya Pradesh, India.
- [Jabalpur air quality](https://aqi.news/aqi/jabalpur): Live AQI and PM2.5 for Jabalpur, Madhya Pradesh, India.
- [Jaipur air quality](https://aqi.news/aqi/jaipur): Live AQI and PM2.5 for Jaipur, Rajasthan, India.
- [Jalandhar air quality](https://aqi.news/aqi/jalandhar): Live AQI and PM2.5 for Jalandhar, Punjab, India.
- [Jalgaon air quality](https://aqi.news/aqi/jalgaon): Live AQI and PM2.5 for Jalgaon, Maharashtra, India.
- [Jamnagar air quality](https://aqi.news/aqi/jamnagar): Live AQI and PM2.5 for Jamnagar, Gujarat, India.
- [Jamshedpur air quality](https://aqi.news/aqi/jamshedpur): Live AQI and PM2.5 for Jamshedpur, Jharkhand, India.
- [Jodhpur air quality](https://aqi.news/aqi/jodhpur): Live AQI and PM2.5 for Jodhpur, Rajasthan, India.
- [Kakinada air quality](https://aqi.news/aqi/kakinada): Live AQI and PM2.5 for Kakinada, Andhra Pradesh, India.
- [Kanpur air quality](https://aqi.news/aqi/kanpur): Live AQI and PM2.5 for Kanpur, Uttar Pradesh, India.
- [Kochi air quality](https://aqi.news/aqi/kochi): Live AQI and PM2.5 for Kochi, Kerala, India.
- [Kolhapur air quality](https://aqi.news/aqi/kolhapur): Live AQI and PM2.5 for Kolhapur, Maharashtra, India.
- [Kota air quality](https://aqi.news/aqi/kota): Live AQI and PM2.5 for Kota, Rajasthan, India.
- [Kozhikode air quality](https://aqi.news/aqi/kozhikode): Live AQI and PM2.5 for Kozhikode, Kerala, India.
- [Lucknow air quality](https://aqi.news/aqi/lucknow): Live AQI and PM2.5 for Lucknow, Uttar Pradesh, India.
- [Ludhiana air quality](https://aqi.news/aqi/ludhiana): Live AQI and PM2.5 for Ludhiana, Punjab, India.
- [Madurai air quality](https://aqi.news/aqi/madurai): Live AQI and PM2.5 for Madurai, Tamil Nadu, India.
- [Mangaluru air quality](https://aqi.news/aqi/mangaluru): Live AQI and PM2.5 for Mangaluru, Karnataka, India.
- [Mohali air quality](https://aqi.news/aqi/mohali): Live AQI and PM2.5 for Mohali, Punjab, India.
- [Moradabad air quality](https://aqi.news/aqi/moradabad): Live AQI and PM2.5 for Moradabad, Uttar Pradesh, India.
- [Mysuru air quality](https://aqi.news/aqi/mysuru): Live AQI and PM2.5 for Mysuru, Karnataka, India.
- [Nagpur air quality](https://aqi.news/aqi/nagpur): Live AQI and PM2.5 for Nagpur, Maharashtra, India.
- [Nashik air quality](https://aqi.news/aqi/nashik): Live AQI and PM2.5 for Nashik, Maharashtra, India.
- [Navi Mumbai air quality](https://aqi.news/aqi/navi-mumbai): Live AQI and PM2.5 for Navi Mumbai, Maharashtra, India.
- [Nellore air quality](https://aqi.news/aqi/nellore): Live AQI and PM2.5 for Nellore, Andhra Pradesh, India.
- [Nizamabad air quality](https://aqi.news/aqi/nizamabad): Live AQI and PM2.5 for Nizamabad, Telangana, India.
- [Noida air quality](https://aqi.news/aqi/noida): Live AQI and PM2.5 for Noida, Uttar Pradesh, India.
- [Panaji air quality](https://aqi.news/aqi/panaji): Live AQI and PM2.5 for Panaji, Goa, India.
- [Patna air quality](https://aqi.news/aqi/patna): Live AQI and PM2.5 for Patna, Bihar, India.
- [Prayagraj air quality](https://aqi.news/aqi/prayagraj): Live AQI and PM2.5 for Prayagraj, Uttar Pradesh, India.
- [Puducherry air quality](https://aqi.news/aqi/puducherry): Live AQI and PM2.5 for Puducherry, Puducherry, India.
- [Raipur air quality](https://aqi.news/aqi/raipur): Live AQI and PM2.5 for Raipur, Chhattisgarh, India.
- [Rajkot air quality](https://aqi.news/aqi/rajkot): Live AQI and PM2.5 for Rajkot, Gujarat, India.
- [Ranchi air quality](https://aqi.news/aqi/ranchi): Live AQI and PM2.5 for Ranchi, Jharkhand, India.
- [Salem air quality](https://aqi.news/aqi/salem): Live AQI and PM2.5 for Salem, Tamil Nadu, India.
- [Solapur air quality](https://aqi.news/aqi/solapur): Live AQI and PM2.5 for Solapur, Maharashtra, India.
- [Surat air quality](https://aqi.news/aqi/surat): Live AQI and PM2.5 for Surat, Gujarat, India.
- [Thane air quality](https://aqi.news/aqi/thane): Live AQI and PM2.5 for Thane, Maharashtra, India.
- [Thiruvananthapuram air quality](https://aqi.news/aqi/thiruvananthapuram): Live AQI and PM2.5 for Thiruvananthapuram, Kerala, India.
- [Thrissur air quality](https://aqi.news/aqi/thrissur): Live AQI and PM2.5 for Thrissur, Kerala, India.
- [Tiruchirappalli air quality](https://aqi.news/aqi/tiruchirappalli): Live AQI and PM2.5 for Tiruchirappalli, Tamil Nadu, India.
- [Tirupati air quality](https://aqi.news/aqi/tirupati): Live AQI and PM2.5 for Tirupati, Andhra Pradesh, India.
- [Udaipur air quality](https://aqi.news/aqi/udaipur): Live AQI and PM2.5 for Udaipur, Rajasthan, India.
- [Vadodara air quality](https://aqi.news/aqi/vadodara): Live AQI and PM2.5 for Vadodara, Gujarat, India.
- [Varanasi air quality](https://aqi.news/aqi/varanasi): Live AQI and PM2.5 for Varanasi, Uttar Pradesh, India.
- [Vijayawada air quality](https://aqi.news/aqi/vijayawada): Live AQI and PM2.5 for Vijayawada, Andhra Pradesh, India.
- [Visakhapatnam air quality](https://aqi.news/aqi/visakhapatnam): Live AQI and PM2.5 for Visakhapatnam, Andhra Pradesh, India.
- [Warangal air quality](https://aqi.news/aqi/warangal): Live AQI and PM2.5 for Warangal, Telangana, India.
- [Dehradun air quality](https://aqi.news/aqi/dehradun): Live AQI and PM2.5 for Dehradun, Uttarakhand, India.
- [Shimla air quality](https://aqi.news/aqi/shimla): Live AQI and PM2.5 for Shimla, Himachal Pradesh, India.
- [Srinagar air quality](https://aqi.news/aqi/srinagar): Live AQI and PM2.5 for Srinagar, Jammu and Kashmir, India.
- [Jammu air quality](https://aqi.news/aqi/jammu): Live AQI and PM2.5 for Jammu, Jammu and Kashmir, India.
- [Meerut air quality](https://aqi.news/aqi/meerut): Live AQI and PM2.5 for Meerut, Uttar Pradesh, India.
- [Siliguri air quality](https://aqi.news/aqi/siliguri): Live AQI and PM2.5 for Siliguri, West Bengal, India.
- [Imphal air quality](https://aqi.news/aqi/imphal): Live AQI and PM2.5 for Imphal, Manipur, India.
- [Bangkok air quality](https://aqi.news/aqi/bangkok): Live AQI and PM2.5 for Bangkok, Thailand.
- [Beijing air quality](https://aqi.news/aqi/beijing): Live AQI and PM2.5 for Beijing, China.
- [Colombo air quality](https://aqi.news/aqi/colombo): Live AQI and PM2.5 for Colombo, Sri Lanka.
- [Dhaka air quality](https://aqi.news/aqi/dhaka): Live AQI and PM2.5 for Dhaka, Bangladesh.
- [Dubai air quality](https://aqi.news/aqi/dubai): Live AQI and PM2.5 for Dubai, United Arab Emirates.
- [Jakarta air quality](https://aqi.news/aqi/jakarta): Live AQI and PM2.5 for Jakarta, Indonesia.
- [Karachi air quality](https://aqi.news/aqi/karachi): Live AQI and PM2.5 for Karachi, Pakistan.
- [London air quality](https://aqi.news/aqi/london): Live AQI and PM2.5 for London, United Kingdom.
- [Los Angeles air quality](https://aqi.news/aqi/los-angeles): Live AQI and PM2.5 for Los Angeles, United States.
- [New York air quality](https://aqi.news/aqi/new-york): Live AQI and PM2.5 for New York, United States.
- [Shanghai air quality](https://aqi.news/aqi/shanghai): Live AQI and PM2.5 for Shanghai, China.
- [Singapore air quality](https://aqi.news/aqi/singapore): Live AQI and PM2.5 for Singapore, Singapore.
- [Tokyo air quality](https://aqi.news/aqi/tokyo): Live AQI and PM2.5 for Tokyo, Japan.

## Machine-readable resources

- [Full text corpus](https://aqi.news/llms-full.txt): every reference page flattened into one plain-text document.
- [Sitemap](https://aqi.news/sitemap.xml): all indexable URLs.
- [robots.txt](https://aqi.news/robots.txt): crawl policy. All compliant crawlers, including AI answer engines, are allowed.

## Optional

Questions AQI.news is built to answer:

- What is the current air quality (AQI) in a given city or region?
- What are the current PM2.5 and PM10 pollution levels?
- Is the air safe to breathe or exercise in right now?
- What health effects are associated with current pollution levels?
- Which pollutant is driving today’s AQI?
- What does the AQI category mean for my health?
- Should children go outside when AQI is high?
- Is it safe for people with asthma or heart disease to be outdoors today?
- When should I wear a mask because of air pollution, and which type?
- What is the difference between N95, N99, FFP2, FFP3 and P100 respirators?
- Should I keep windows open or closed, or run an air purifier, during high pollution?
- What time of day usually has the cleanest and the worst air?
- How do weather, wind, rain and winter inversions affect AQI?
- How do traffic, construction dust and crop burning affect PM2.5 and PM10?
- What is the difference between PM2.5 and PM10?
- What is ground-level ozone, and what are NO2 and SO2?
- How are pollutant concentrations converted into AQI?
- Which AQI standard does AQI.news use, and why does it differ from CPCB?
- What are the WHO air quality guideline values and India NAAQS limits?
- How often is the air quality data updated, and where does it come from?
- Can I compare air quality between two cities, or view pollution on a map?
- Can I track AQI trends over the last few days or months?
- What is cigarette-equivalent exposure and lung-age estimation?
- What are the risks of silica, cement, textile, mining and construction dust, or welding fumes?
- How can I reduce personal exposure to air pollution?

Usage: AQI.news public content may be indexed, summarized, and cited with attribution to AQI.news. Live AQI values change continuously — when referencing a reading, link users to the relevant page on https://aqi.news for the current number rather than quoting a value as a fixed fact. Reference-library pages are stable and safe to quote.

Website: https://aqi.news