Chennai AQI Today
Live AQI, a full pollutant breakdown and a 4-day forecast for Chennai, updated every 15 minutes.
The Air Quality Index in Chennai, Tamil Nadu is 28 (Good) on India's CPCB National AQI scale, driven by PM2.5 with PM2.5 at 17 µg/m³. Updated every 15 minutes from OpenWeatherMap station data, last read .
Updated 12:43 am
Air quality is clean. Minimal impact on health.
PM2.5 is driving this reading — mostly combustion — vehicles, crop burning, industry and cooking fuel.
Pollutants
PM2.5
17
μg/m³
sub-index 28
PM10
22
μg/m³
sub-index 22
Ozone
25
μg/m³
sub-index 25
NO₂
7.2
μg/m³
sub-index 9
SO₂
3.1
μg/m³
sub-index 4
CO
334
μg/m³
sub-index 17
The AQI is the highest of these sub-indices, on the CPCB National AQI (India) scale. Both standards are defined over 8- and 24-hour averages; readings here are instantaneous, so treat short spikes with care.
What you should do
Great day for a morning walk or run
Open windows for fresh air
No mask needed outdoors
Let children play outside freely