Real-time Air Quality Index
Chennai Air Quality Index (AQI)
60US AQI
Moderate
The current Air Quality Index in Chennai, Tamil Nadu, India is 60, which is considered moderate. The fine particulate (PM2.5) concentration is 10.6 µg/m³.
Last updated · Source: CAMS forecast model
Pollutant levels in Chennai
PM2.510.6 µg/m³Fine particulate matter
PM1016.5 µg/m³Coarse particulate matter
O₃96 µg/m³Ozone
NO₂3.7 µg/m³Nitrogen dioxide
SO₂6.8 µg/m³Sulphur dioxide
CO163 µg/m³Carbon monoxide
Health advice
Air quality is acceptable. Unusually sensitive people should consider limiting prolonged or heavy outdoor exertion.
7-day AQI trend
| Day | AQI | Category |
|---|---|---|
| Jul 2 | 40 | Good |
| Jul 3 | 50 | Good |
| Jul 4 | 43 | Good |
| Jul 5 | 46 | Good |
| Jul 6 | 56 | Moderate |
| Jul 7 | 62 | Moderate |
| Jul 8 | 60 | Moderate |
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 Chennai reflects a CAMS forecast model and updates throughout the day. Learn what the AQI number means for your body.