A good AQI level is between 0 and 50, indicating air quality that poses little or no risk to health.
AQI in Kolkata Today (Tuesday, April 28) - Air Quality in Kolkata
As of Today, Kolkata AQI level is 46 which is recorded as Good category. This level is 5 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 WeatherTuesday Apr 28
Last 7 Days AQI
| Dates | City, States | AQI |
|---|---|---|
| April 28, 2026 | Kolkata, West Bengal | 46 |
| April 27, 2026 | Kolkata, West Bengal | 41 |
| April 26, 2026 | Kolkata, West Bengal | 43 |
| April 25, 2026 | Kolkata, West Bengal | 52 |
| April 24, 2026 | Kolkata, West Bengal | 55 |
| April 23, 2026 | Kolkata, West Bengal | 52 |
| April 22, 2026 | Kolkata, West Bengal | 52 |
Changes in AQI in Last 7 Days
Most Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Meerut, Uttar Pradesh | 282 |
| 2 | Ballabgarh, Haryana | 253 |
| 3 | Ghaziabad, Uttar Pradesh | 251 |
| 4 | Sonipat, Haryana | 241 |
| 5 | Rohtak, Haryana | 235 |
| 6 | Panipat, Haryana | 223 |
| 7 | Bahadurgarh, Haryana | 221 |
| 8 | Bhiwadi, Rajasthan | 217 |
| 9 | Greater Noida, Uttar Pradesh | 215 |
| 10 | Hapur, Uttar Pradesh | 213 |
Least Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Ramanathapuram, TamilNadu | 20 |
| 2 | Madikeri, Karnataka | 27 |
| 3 | Kohima, Nagaland | 27 |
| 4 | Munger, Bihar | 28 |
| 5 | Thiruvananthapuram, Kerala | 30 |
| 6 | Puducherry, Puducherry | 30 |
| 7 | Motihari, Bihar | 31 |
| 8 | Kishanganj, Bihar | 32 |
| 9 | Gangtok, Sikkim | 33 |
| 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





















