Real-time Air Quality Index
Salem Air Quality Index (AQI)
62US AQI
Moderate
The current Air Quality Index in Salem, Tamil Nadu, India is 62, which is considered moderate. The fine particulate (PM2.5) concentration is 11.2 µg/m³.
Last updated · Source: CAMS forecast model
Pollutant levels in Salem
PM2.511.2 µg/m³Fine particulate matter
PM1019.5 µg/m³Coarse particulate matter
O₃87 µg/m³Ozone
NO₂2.1 µg/m³Nitrogen dioxide
SO₂5.2 µg/m³Sulphur dioxide
CO138 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 | 39 | Good |
| Jul 3 | 40 | Good |
| Jul 4 | 35 | Good |
| Jul 5 | 42 | Good |
| Jul 6 | 51 | Moderate |
| Jul 7 | 50 | Good |
| Jul 8 | 59 | 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 Salem reflects a CAMS forecast model and updates throughout the day. Learn what the AQI number means for your body.