A good AQI level is between 0 and 50, indicating air quality that poses little or no risk to health.
AQI in Perundurai Today (Sunday, January 11) - Air Quality in Perundurai
As of Today, Perundurai AQI level is 66 which is recorded as Moderate 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.
Perundurai's AQI
Perundurai WeatherSunday Jan 11
Last 7 Days AQI
| Dates | City, States | AQI |
|---|---|---|
| January 11, 2026 | Perundurai, TamilNadu | 66 |
| January 10, 2026 | Perundurai, TamilNadu | 52 |
| January 09, 2026 | Perundurai, TamilNadu | 68 |
| January 08, 2026 | Perundurai, TamilNadu | 89 |
| January 07, 2026 | Perundurai, TamilNadu | 74 |
| January 06, 2026 | Perundurai, TamilNadu | 62 |
| January 05, 2026 | Perundurai, TamilNadu | 70 |
Changes in AQI in Last 7 Days
Most Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Ghaziabad, Uttar Pradesh | 351 |
| 2 | Gurugram, Haryana | 349 |
| 3 | Noida, Uttar Pradesh | 348 |
| 4 | Delhi, Delhi | 346 |
| 5 | Greater Noida, Uttar Pradesh | 338 |
| 6 | Tonk, Rajasthan | 322 |
| 7 | Narnaul, Haryana | 322 |
| 8 | Sikar, Rajasthan | 314 |
| 9 | Bundi, Rajasthan | 292 |
| 10 | Dharuhera, Haryana | 291 |
Least Polluted City/States in India
| Rank | City, States | AQI |
|---|---|---|
| 1 | Shillong, Meghalaya | 9 |
| 2 | Gangtok, Sikkim | 20 |
| 3 | Chikkamagaluru, Karnataka | 35 |
| 4 | Vijayapura, Karnataka | 42 |
| 5 | Madikeri, Karnataka | 44 |
| 6 | Thanjavur, TamilNadu | 45 |
| 7 | Kalaburagi, Karnataka | 46 |
| 8 | Silchar, Assam | 47 |
| 9 | Dindigul, TamilNadu | 47 |
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


















