Kolkata AQI Today
Live AQI, a full pollutant breakdown and a 4-day forecast for Kolkata, updated every 15 minutes.
The Air Quality Index in Kolkata, West Bengal is 65 (Satisfactory) on India's CPCB National AQI scale, driven by PM2.5 with PM2.5 at 39 µg/m³. Updated every 15 minutes from OpenWeatherMap station data, last read .
Updated 12:25 am
Acceptable for most people. Sensitive individuals may notice minor breathing discomfort.
PM2.5 is driving this reading — mostly combustion — vehicles, crop burning, industry and cooking fuel.
Pollutants
PM2.5
39
μg/m³
sub-index 65
PM10
44
μg/m³
sub-index 44
Ozone
26
μg/m³
sub-index 26
NO₂
5.4
μg/m³
sub-index 7
SO₂
2.5
μg/m³
sub-index 3
CO
455
μg/m³
sub-index 23
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
Outdoor activity is fine for most people
Monitor symptoms if you have asthma
Keep an inhaler handy if you usually need one
Windows can stay open, but watch for changes