A good AQI level is between 0 and 50, indicating air quality that poses little or no risk to health.
AQI in Kolkata Today (Wednesday, November 26) - Air Quality in Kolkata
As of Today, Kolkata AQI level is 187 which is recorded as Poor category. This level is 69 point(s) lower 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 WeatherWednesday Nov 26
Last 7 Days AQI
| Dates | City, States | AQI |
|---|---|---|
| November 25, 2025 | Kolkata, West Bengal | 187 |
| November 24, 2025 | Kolkata, West Bengal | 256 |
| November 23, 2025 | Kolkata, West Bengal | 234 |
| November 22, 2025 | Kolkata, West Bengal | 190 |
| November 21, 2025 | Kolkata, West Bengal | 177 |
| November 20, 2025 | Kolkata, West Bengal | 172 |
| November 19, 2025 | Kolkata, West Bengal | 159 |
Changes in AQI in Last 7 Days
Most Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Hapur, Uttar Pradesh | 416 |
| 2 | Noida, Uttar Pradesh | 397 |
| 3 | Ghaziabad, Uttar Pradesh | 396 |
| 4 | Greater Noida, Uttar Pradesh | 382 |
| 5 | Delhi, Delhi | 382 |
| 6 | Charkhi Dadri, Haryana | 366 |
| 7 | Bulandshahr, Uttar Pradesh | 356 |
| 8 | Meerut, Uttar Pradesh | 350 |
| 9 | Manesar, Haryana | 342 |
| 10 | Baghpat, Uttar Pradesh | 330 |
Least Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Ariyalur, TamilNadu | 13 |
| 2 | Ooty, TamilNadu | 15 |
| 3 | Karur, TamilNadu | 16 |
| 4 | Tiruchirappalli, TamilNadu | 16 |
| 5 | Thanjavur, TamilNadu | 17 |
| 6 | Shillong, Meghalaya | 17 |
| 7 | Perundurai, TamilNadu | 21 |
| 8 | Salem, TamilNadu | 22 |
| 9 | Tirupur, TamilNadu | 22 |
| 10 | Mangalore, Karnataka | 25 |
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



















