Chennai air quality · Tamil Nadu, India
Clean air days like this are worth an evening walk in the park
NAQI 44 (Good) in Chennai, from 6 CPCB monitoring stations. On the US scale that is 37 (Good).
Updated
Pollutants in Chennai
- PM2.5 · µg/m³6.4Under WHO limit
- PM10 · µg/m³40.3Under WHO limit
- NO₂ · µg/m³10.0Under WHO limit
- O₃ · µg/m³16.0
- SO₂ · µg/m³35.5Under WHO limit
- CO · mg/m³0.52
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Chennai right now?
Minimal impact on health.
Walking and commuting
Go aheadEnjoy it.
Running and jogging
Go aheadA great time to run outdoors.
Cycling
Go aheadRide freely.
Children playing outside
Go aheadNo limits.
Older adults and heart or lung conditions
Go aheadNo limits.
Open windows
Go aheadAir out your home.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededNot needed.
Based on the US EPA Air Quality Guide, applied to the current NAQI category. If you have symptoms, follow your doctor's advice.
What US AQI 0–50 means for your health →
Air quality by area in Chennai
4 stations, worst first- RoyapuramSatisfactory73
- Manali VillageGood44
- PerungudiGood42
- ArumbakkamGood21
Chennai air quality history
Daily average, 37 days- 81average daily NAQI over 37 days
- 191worst day, 13 September
- 48cleanest day, 18 October
- 0days at Poor or worse
The last 7 days averaged 63, better than the week before (76). 1 of the last 37 days was Good.
Weather in Chennai
Light Thunderstorms with maximum surface wind speed less than 40 kmph (in gusts), Moderate rain: 5-15 mm/hr (until 19:00 IST)
Mon 19 Oct: Heavy Rainfall
Wed 21 Oct: Heavy Rainfall
Thu 22 Oct: Light to Moderate Rainfall
Fri 23 Oct: Light to Moderate Rainfall
Sat 24 Oct: Light to Moderate Rainfall
Sun 25 Oct: Thunderstorm accompanied with Lightning
| Day | Forecast | Max | Min |
|---|---|---|---|
| Mon 19 | Generally cloudy sky with Heavy rain | 31° | 23° |
| Tue 20 | Generally cloudy sky with Heavy rain | 30° | 22° |
| Wed 21 | Generally cloudy sky with Heavy rain | 30° | 22° |
| Thu 22 | Generally cloudy sky with moderate rain | 31° | 23° |
| Fri 23 | Generally cloudy sky with moderate rain | 31° | 23° |
| Sat 24 | Generally cloudy sky with moderate rain | 31° | 23° |
| Sun 25 | Partly cloudy sky with possibility of moderate rain or Thunderstorm | 33° | 27° |
India Meteorological Department (IMD) city forecast, issued 19 October 2026. All IMD warnings →
Nearby cities
India rankingRelated reading
Chennai air quality: common questions
What is the AQI in Chennai right now?
The NAQI in Chennai is 44 (Good), based on 6 monitoring stations. On the US AQI scale the same air reads 37 (Good).
Is it safe to go outside in Chennai today?
A great time to be outside. Minimal impact on health. For runners: A great time to run outdoors.
Which area of Chennai has the worst air right now?
Royapuram has the highest reading at 73 (Satisfactory). Arumbakkam has the lowest at 21, out of 4 stations reporting.
How has air quality in Chennai been recently?
Over the last 37 days with data, Chennai averaged NAQI 81. The worst day was 13 September at 191; the cleanest was 18 October at 48. 0 days were at Poor or worse.
Where does Chennai's air quality data come from?
From State & Central Pollution Control Board, Government of India · Center for Study of Science, Technology and Policy (CSTEP) · Aurassure's University Clean Air Network, using 6 monitoring stations in and around the city. Good Air does not estimate or adjust these readings.
Source: State & Central Pollution Control Board, Government of India · Center for Study of Science, Technology and Policy (CSTEP) · Aurassure's University Clean Air Network. Readings are published by the monitoring agency and may be revised.