A good AQI level is between 0 and 50, indicating air quality that poses little or no risk to health.
AQI in Kolkata Today (Monday, October 12) - Air Quality in Kolkata
As of Today, Kolkata AQI level is 107 which is recorded as Poor category. This level is 1 point(s) higher compared to the previous day. The AQI , a standard measure of air quality, offers insights into the concentration of pollutants in the air, ranging from harmful particles to gases like carbon monoxide and sulfur dioxide.
Kolkata's AQI
Kolkata WeatherMonday Oct 12
Last 7 Days AQI
| Dates | City, States | AQI |
|---|---|---|
| October 12, 2026 | Kolkata, West Bengal | 107 |
| October 11, 2026 | Kolkata, West Bengal | 106 |
| October 10, 2026 | Kolkata, West Bengal | 76 |
| October 09, 2026 | Kolkata, West Bengal | 95 |
| October 08, 2026 | Kolkata, West Bengal | 108 |
| October 07, 2026 | Kolkata, West Bengal | 153 |
| October 06, 2026 | Kolkata, West Bengal | 144 |
Changes in AQI in Last 7 Days
Most Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Gummidipoondi, TamilNadu | 227 |
| 2 | Agartala, Tripura | 189 |
| 3 | Bikaner, Rajasthan | 176 |
| 4 | Malegaon, Maharashtra | 173 |
| 5 | Angul, Odisha | 162 |
| 6 | Narnaul, Haryana | 151 |
| 7 | Mandideep, Madhya Pradesh | 147 |
| 8 | Pithampur, Madhya Pradesh | 146 |
Least Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Naharlagun, Arunachal Pradesh | 11 |
| 2 | Gangtok, Sikkim | 17 |
| 3 | Aizawl, Mizoram | 25 |
| 4 | Gadag, Karnataka | 26 |
| 5 | Bettiah, Bihar | 28 |
| 6 | Samastipur, Bihar | 31 |
| 7 | Buxar, Bihar | 31 |
| 8 | Korba, Chhattisgarh | 33 |
| 9 | Madikeri, Karnataka | 35 |
| 10 | Chikkamagaluru, Karnataka | 36 |
AQI in all cities of India
Frequently Asked Questions
Which AQI is best?
What are the criteria for AQI?
AQI criteria include measuring the concentration of pollutants like PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide, and ammonia over a specified averaging period.
What are the 8 parameters of AQI?
The 8 parameters of AQI are: Particulate Matter (PM10), Particulate Matter (PM2.5), Ozone (O3), Nitrogen Dioxide (NO2), Sulphur Dioxide (SO2), Carbon Monoxide (CO), Ammonia (NH3), and Lead (Pb).
What are the 6 categories of AQI?
The 6 categories of AQI are: 0-50: Good, 51-100: Moderate, 101-200: Poor, 201-300: Unhealthy, 301-400: Severe, 401-500+: Hazardous


















