A good AQI level is between 0 and 50, indicating air quality that poses little or no risk to health.
AQI in Naharlagun Today (Thursday, January 15) - Air Quality in Naharlagun
As of Today, Naharlagun AQI level is 151 which is recorded as Poor category. This level is 14 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.
Naharlagun's AQI
Naharlagun WeatherThursday Jan 15
Last 7 Days AQI
| Dates | City, States | AQI |
|---|---|---|
| January 15, 2026 | Naharlagun, Arunachal Pradesh | 151 |
| January 13, 2026 | Naharlagun, Arunachal Pradesh | 137 |
| January 12, 2026 | Naharlagun, Arunachal Pradesh | 167 |
| January 11, 2026 | Naharlagun, Arunachal Pradesh | 142 |
| January 10, 2026 | Naharlagun, Arunachal Pradesh | 120 |
| January 09, 2026 | Naharlagun, Arunachal Pradesh | 126 |
| January 08, 2026 | Naharlagun, Arunachal Pradesh | 145 |
Changes in AQI in Last 7 Days
Most Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Greater Noida, Uttar Pradesh | 357 |
| 2 | Delhi, Delhi | 353 |
| 3 | Ghaziabad, Uttar Pradesh | 342 |
| 4 | Noida, Uttar Pradesh | 338 |
| 5 | Ballabgarh, Haryana | 338 |
| 6 | Dharuhera, Haryana | 320 |
| 7 | Bikaner, Rajasthan | 319 |
| 8 | Narnaul, Haryana | 318 |
| 9 | Mandi Gobindgarh, Punjab | 317 |
| 10 | Baghpat, Uttar Pradesh | 315 |
Least Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Gangtok, Sikkim | 28 |
| 2 | Hisar, Haryana | 39 |
| 3 | Chikkamagaluru, Karnataka | 40 |
| 4 | Dindigul, TamilNadu | 42 |
| 5 | Ramanathapuram, TamilNadu | 47 |
| 6 | Koppal, Karnataka | 47 |
| 7 | Kalaburagi, Karnataka | 48 |
| 8 | Madurai, TamilNadu | 49 |
| 9 | Bagalkot, Karnataka | 53 |
| 10 | Kolhapur, Maharashtra | 54 |
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


















