What is the current AQI in Chennai?

The current Air Quality Index (AQI) in Chennai is 0, which falls under the "Good" category. Air quality is satisfactory, and air pollution poses little or no risk.

AQI stands for Air Quality Index. It is a standardized indicator used to communicate how polluted the air currently is or how polluted it is forecast to become. AQI values range from 0 to 500, with lower values indicating better air quality.

What are the pollutant levels in Chennai?

Current pollutant levels in Chennai include: pm2_5: 20.4 ug/m3, pm10: 31 ug/m3, no2: 9.8 ug/m3, so2: 9.6 ug/m3, co: 27.8 mg/m3, o3: 17.8 ug/m3. These values contribute to the overall AQI of 0.

Chennai Air Quality Index (AQI) Today | Air Pollution

Chennai, India

Last Updated: 13-04-2026 10:00:00

38

PM2.5 9 µg/m³ | PM10 21 µg/m³

Air Quality Level

Good

500+ PPM

Current AQI Status

Minimum: 37

On Mar 20 at 7:00 AM

Maximum: 321

On Mar 18 at 2:00 AM

AQI Scale

0-50

Good

Air quality is satisfactory

51-100

Satisfactory

Acceptable air quality

101-150

Moderate

May cause breathing discomfort

151-200

Poor

May cause breathing discomfort to most

201-300

Unhealthy

May cause respiratory illness

300+

Severe

May cause respiratory illness to all

Major Air Pollutants of

PM2.5 ug/m3

Fine Particles (<2.5um)

PM10 ug/m3

Particulate Matter (<10um)

NO2 ug/m3

Nitrogen Dioxide

SO2 ug/m3

Sulfur Dioxide

CO mg/m3

Carbon Monoxide

O3 ug/m3

Ozone

Chennai Air Quality Index (AQI) Today

The Air Quality Index (AQI) in Chennai is 40, which means the air quality is Good right now. The main pollutant today is PM10: 31, PM25: 20.4, NO2: 9.8, SO2: 9.6, O3: 17.8, CO: 27.8. If the AQI is above 100, sensitive gr…

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