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Real-time Air Quality Index

Tokyo AQI Today

69US AQI
Moderate

The current Air Quality Index in Tokyo, Japan is 69, which is considered moderate. The fine particulate (PM2.5) concentration is 16.1 µg/m³.

Last updated · Source: CAMS forecast model

Pollutant levels in Tokyo

PM2.516.1 µg/m³Fine particulate matter
PM1016.6 µg/m³Coarse particulate matter
O₃34 µg/m³Ozone
NO₂41 µg/m³Nitrogen dioxide
SO₂20.7 µg/m³Sulphur dioxide
CO161 µg/m³Carbon monoxide

Health advice

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged or heavy outdoor exertion.

7-day AQI trend

DayAQICategory
Sep 3073Moderate
Oct 174Moderate
Oct 291Moderate
Oct 374Moderate
Oct 474Moderate
Oct 569Moderate
Oct 671Moderate

About the Air Quality Index

The Air Quality Index (AQI) converts measured pollutant concentrations — including PM2.5, PM10, ozone (O₃), nitrogen dioxide (NO₂), sulphur dioxide (SO₂), and carbon monoxide (CO) — into a single 0–500 scale. Higher values mean greater health risk. The reading for Tokyo reflects a CAMS forecast model and updates throughout the day. Learn what the AQI number means for your body, read the AQI scale reference, see what to do at today’s AQI, or compare PM2.5 and PM10.

Frequently asked questions about Tokyo air quality

What is the AQI in Tokyo today?

The current Air Quality Index in Tokyo, Japan is 69 on the 0–500 US AQI scale, which is categorised as moderate. The reading comes from a CAMS forecast model and refreshes throughout the day.

What is the PM2.5 level in Tokyo right now?

Fine particulate matter (PM2.5) in Tokyo, Japan is currently 16.1 µg/m³. The World Health Organization recommends keeping the 24-hour average below 15 µg/m³, so Tokyo is currently above the WHO guideline.

Is it safe to go outside in Tokyo today?

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged or heavy outdoor exertion.

What is considered a good AQI level?

An AQI of 0–50 is good, 51–100 is moderate, 101–150 is unhealthy for sensitive groups, 151–200 is unhealthy, 201–300 is very unhealthy, and anything above 300 is hazardous. The scale is the same everywhere, so readings are directly comparable between cities.

How often is the Tokyo air quality data updated?

Air quality readings for Tokyo, Japan refresh throughout the day, and this page is rendered fresh on every visit, so the AQI, pollutant breakdown and 7-day trend always reflect the latest available model output.

Air quality near Tokyo

Compare Tokyo with the closest monitored cities — pollution is regional, so neighbouring readings often move together.

Open the live AQI dashboard Compare cities← All cities