Kolkata Unhealthy for Sensitive Groups

Kolkata, West Bengal

Updated: Mar 13, 2026, 7:00 PM

Unhealthy for Sensitive Groups

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

Current Weather

26.7°C

Temperature

82%

Humidity

6.9

mph wind

Partly cloudy

Conditions

Pollutant Breakdown

105

PM2.5

µg/m³ · Fine particles

PM10

µg/m³ · Coarse particles

44.5

Ozone

ppb · Ground-level ozone

5.8

NO₂

ppb · Nitrogen dioxide

5.9

SO₂

ppb · Sulfur dioxide

3.7

ppm · Carbon monoxide

Dominant pollutant: PM25

PM2.5 Forecast (next 7 days)

Wed

3/11

138

avg

Thu

3/12

137

avg

Fri

3/13

155

avg

Sat

3/14

120

avg

Sun

3/15

115

avg

Mon

3/16

118

avg

Tue

3/17

137

avg

Health Guidance

⚠️

Sensitive groups (asthma, heart disease, elderly, children): Reduce prolonged or heavy outdoor exertion.

✅

General population: Unusually sensitive individuals should watch for symptoms.

💨

Keep windows closed if AQI is Unhealthy or above. Use HEPA air purifiers indoors.

Data from: CPCB - India Central Pollution Control Board, World Air Quality Index Project

Is the air safe in Kolkata today?

The current Air Quality Index (AQI) in Kolkata is 105, which is classified as "Unhealthy for Sensitive Groups". Members of sensitive groups may experience health effects. The general public is less likely to be affected.

The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.

Air quality in Kolkata, West Bengal is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

AQI Scale Reference

0–50

Good

51–100

Moderate

101–150

Unhealthy for Sensitive Groups

151–200

Unhealthy

201–300

Very Unhealthy

301+

Hazardous