Real-time Air Quality Index
Colombo Air Quality Index (AQI)
73US AQI
Moderate
The current Air Quality Index in Colombo, Sri Lanka is 73, which is considered moderate. The fine particulate (PM2.5) concentration is 14.6 µg/m³.
Last updated · Source: CAMS forecast model
Pollutant levels in Colombo
PM2.514.6 µg/m³Fine particulate matter
PM1023.9 µg/m³Coarse particulate matter
O₃74 µg/m³Ozone
NO₂6.9 µg/m³Nitrogen dioxide
SO₂12.5 µg/m³Sulphur dioxide
CO291 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 | 68 | Moderate |
| Jul 3 | 54 | Moderate |
| Jul 4 | 40 | Good |
| Jul 5 | 54 | Moderate |
| Jul 6 | 69 | Moderate |
| Jul 7 | 76 | Moderate |
| Jul 8 | 71 | 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 Colombo reflects a CAMS forecast model and updates throughout the day. Learn what the AQI number means for your body.