AQI in KOLKATA (Saturday, November 02) - Air Quality in KOLKATA
Current Kolkata AQI level is 198 which is recorded as Poor category. This level is 99 point(s) higher compared to the previous day. The AQI measures various air pollutants, and the toxic elements. These readings indicate the concentration of harmful particles in the air. The air quality is decided after an assessment of weather and pollution factors.
Last 7 Days AQI
Updated: November 02, 2024| Dates | City, States | AQI |
|---|---|---|
| November 02, 2024 | Kolkata, West Bengal | 198 |
| November 01, 2024 | Kolkata, West Bengal | 99 |
| October 31, 2024 | Kolkata, West Bengal | 61 |
| October 30, 2024 | Kolkata, West Bengal | 76 |
| October 29, 2024 | Kolkata, West Bengal | 74 |
| October 28, 2024 | Kolkata, West Bengal | 69 |
| October 27, 2024 | Kolkata, West Bengal | 71 |
Most Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Amritsar, Punjab | 335 |
| 2 | Sonipat, Haryana | 334 |
| 3 | Hajipur, Bihar | 326 |
| 4 | Ghaziabad, Uttar Pradesh | 310 |
| 5 | Siwan, Bihar | 308 |
| 6 | Chandigarh, Chandigarh | 301 |
| 7 | Delhi, Delhi | 298 |
| 8 | Lucknow, Uttar Pradesh | 292 |
| 9 | Chhapra, Bihar | 288 |
| 10 | Nanded, Maharashtra | 284 |
Least Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Ariyalur, TamilNadu | 23 |
| 2 | Madikeri, Karnataka | 23 |
| 3 | Gangtok, Sikkim | 31 |
| 4 | Koppal, Karnataka | 34 |
| 5 | Gadag, Karnataka | 38 |
| 6 | Madurai, TamilNadu | 39 |
| 7 | Udupi, Karnataka | 39 |
| 8 | Tirunelveli, TamilNadu | 40 |
| 9 | Damoh, Madhya Pradesh | 41 |
| 10 | Nayagarh, Odisha | 44 |
AQI In Indian Cities
Frequently Asked Questions
What is a good AQI level?
A good AQI level is between 0 and 50, indicating air quality that poses little or no risk to health.
What is the safe range of AQI?
The safe range of AQI is from 0 to 100, covering the categories of "Good" (0-50) and "Moderate" (51-100).
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).
How is AQI calculated?
AQI is calculated using pollutant concentration data, which is converted into an AQI value for each pollutant through specific formulae. The highest value among these is reported as the overall AQI for the location.
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