Air Quality (AQI) in Tamil Nadu
Air Quality (AQI) across every tracked city in Tamil Nadu.
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Air Quality (AQI) – Tamil Nadu
Live- Cuddalore 81 Satisfactory
- Gummidipoondi 263 Poor
- Thoothukudi 65 Satisfactory
- Chennai 494 Severe
0–50 Good
51–100 Satisfactory
101–200 Moderate
201–300 Poor
301–400 Very Poor
400+ Severe
⚠️ Severe: Avoid all outdoor activity. This level affects even healthy people.
🕒 Updated 2 Sep, 4:20 AM IST
All Tamil Nadu AQI →
What do these numbers mean?
The Air Quality Index (AQI) is a single 0–500 score used by India's Central Pollution Control Board (CPCB) to describe how polluted the air is right now, combining PM2.5, PM10, NO₂, SO₂, CO and O₃ into one number. India's official bands run 0–50 Good, 51–100 Satisfactory, 101–200 Moderate, 201–300 Poor, 301–400 Very Poor, and 400+ Severe. Anything above 200 is generally considered unsafe for prolonged outdoor activity, especially for children, older adults, and anyone with respiratory or heart conditions.