Chennai air quality now

India · The summary is refreshed every 15 minutes.

Now

No current value: fewer than four sensors at different places are reporting now.

Open map

Open methodology and data in JSON: Methodology and data sources · JSON

There are not enough fresh measurements for Chennai right now. From 14:30 to 22:30 local time the city mean PM2.5 stayed roughly level: from 62.0 to 56.0 µg/m³.

The weather data do not point to a clear reason for this level.

Weather now: cloudy, 26°C, wind 3 m/s, humidity 80%. No major change in the wind is expected in the coming hours. By 14:00 the temperature will be about 30°C.

Written automatically at 02:43 local time (21:13 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

3 m/s

Wind, N

0 mm

Precipitation today

Pollution accumulation index now

44/100Moderate · An estimate of weather conditions · not a PM2.5 forecast

Now4447
04.0012.0019.0003.00

Pollution accumulation forecast

Today — November 12

31°/24°

Index by time of day

44/100Moderate

  1. 44/100Night
  2. 33/100Morning
  3. 6/100Day
  4. 18/100Evening

Friday — November 13

30°/24°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 35/100Morning
  3. 6/100Day
  4. 18/100Evening

Saturday — November 14

30°/24°

Index by time of day

48/100Moderate

  1. 48/100Night
  2. 33/100Morning
  3. 6/100Day
  4. 15/100Evening

Sunday — November 15

30°/26°

Index by time of day

42/100Moderate

  1. 42/100Night
  2. 32/100Morning
  3. 7/100Day
  4. 18/100Evening

Monday — November 16

30°/25°

Index by time of day

44/100Moderate

  1. 44/100Night
  2. 33/100Morning
  3. 6/100Day
  4. 17/100Evening

Tuesday — November 17

29°/23°

Index by time of day

44/100Moderate

  1. 44/100Night
  2. 31/100Morning
  3. 5/100Day
  4. 13/100Evening

Forecast of conditions that trap pollution near the surface

Weather

26°

Cloudy. Feels like 29°C

  1. MorningCloudy29°C63%
  2. DayCloudy30°C56%
  3. EveningCloudy27°C77%

Wind

3m/sWind from the N

6m/sWind gusts

Wind force: 2

Gusts up to 9 m/s are expected.

10-day weather forecast for Chennai

India

  1. TodayNov 12Cloudy31°C24°C
  2. FriNov 13Rain30°C24°C
  3. SatNov 14Rain30°C24°C
  4. SunNov 15Cloudy30°C26°C
  5. MonNov 16Cloudy30°C25°C
  6. TueNov 17Cloudy29°C23°C
  7. WedNov 18Cloudy30°C23°C
  8. ThuNov 19Cloudy31°C26°C
  9. FriNov 20Cloudy33°C24°C
  10. SatNov 21Rain32°C25°C

India: sensors in total

14

  1. DelhiIndia

    3

  2. BengaluruIndia

    2

  3. JammuIndia

    2

Cities with the most sensors

All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.

Air quality calendar: Chennai

Daily mean PM2.5 of the city sensors, µg/m³

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

India · City ranking · All pilot cities

Questions

What is the air quality in Chennai right now?

Fresh data for Chennai are insufficient (last update: 05:15 local time, 23:45 UTC). Open the map for the latest readings of individual sensors.

Where do these data come from?

From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.

How often is this page updated?

The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.

Data

Where do these data come from?

The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.

“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.

Source: public Atmy monitoring data. Methodology and data sources · Data terms