Air quality
Air quality in Thanjavur today
Updated
Good (US AQI 48) Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. Model estimate for Mon, Oct 26, 1:30 am (20:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Thanjavur, Tamil Nadu, India, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 48 Good
- PM2.5
- 11 µg/m³ 0.7× WHO 24-h guideline
- PM10
- 11 µg/m³
- Ozone
- 37 µg/m³
- Dominant pollutant
- PM2.5 sub-index 48
- Best hour today
- 6:30 am AQI 53
- European AQI
- 32
Air quality in Thanjavur right now
Right now the modelled US Air Quality Index for Thanjavur, Tamil Nadu, India is 48, which falls in the "Good" band (up to 50). Air quality is satisfactory and poses little or no risk; a good time for outdoor activity.
The index is driven mainly by PM2.5, whose own sub-index is 48. Fine and coarse particles come from traffic, heating, industry, dust and smoke; they build up on calm nights and clear when wind or rain arrives.
PM2.5 is 11 µg/m³, within the WHO 24-hour guideline of 15 µg/m³; PM10 is 11 µg/m³ against a guideline of 45; ozone is 37 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 13 µg/m³ (below the 24-hour guideline of 25).
Also this hour: carbon monoxide 214 µg/m³.
Thanjavur AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 48 around Mon 1:30 am to 92 around Tue 1:30 am, from "Good" at best to "Moderate" at worst.
The following day is expected to be worse, averaging about 109 against 64 for the next 24 hours.
| Local time (Asia/Kolkata) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 1:30 am | 48 | Good | 10.8 | 11 | 37 |
| Mon 4:30 am | 51 | Moderate | 18.8 | 20 | 58 |
| Mon 7:30 am | 54 | Moderate | 25.7 | 27 | 74 |
| Mon 10:30 am | 58 | Moderate | 24.9 | 27 | 95 |
| Mon 1:30 pm | 63 | Moderate | 32.4 | 34 | 101 |
| Mon 4:30 pm | 69 | Moderate | 33.8 | 35 | 86 |
| Mon 7:30 pm | 75 | Moderate | 44.2 | 46 | 76 |
| Mon 10:30 pm | 83 | Moderate | 46.6 | 49 | 79 |
| Tue 1:30 am | 92 | Moderate | 43.9 | 46 | 77 |
| Tue 4:30 am | 98 | Moderate | 40.7 | 42 | 66 |
| Tue 7:30 am | 104 | Unhealthy for Sensitive Groups | 41.2 | 43 | 70 |
| Tue 10:30 am | 109 | Unhealthy for Sensitive Groups | 44.9 | 48 | 117 |
| Tue 1:30 pm | 115 | Unhealthy for Sensitive Groups | 44.2 | 48 | 144 |
| Tue 4:30 pm | 118 | Unhealthy for Sensitive Groups | 41.8 | 44 | 106 |
| Tue 7:30 pm | 119 | Unhealthy for Sensitive Groups | 28.5 | 29 | 75 |
| Tue 10:30 pm | 112 | Unhealthy for Sensitive Groups | 14.1 | 14 | 65 |
| Wed 1:30 am | 101 | Unhealthy for Sensitive Groups | 13.6 | 14 | 64 |
Every third hour of the CAMS forecast via Open-Meteo. US AQI uses rolling averages (24 h for particles, 8 h for ozone), so it moves more slowly than the hourly concentrations.
Best time to be outside in Thanjavur today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 6:30 am (AQI 53, Moderate) and the worst around 9:30 pm (AQI 80). That is a swing of 27 points, so a run or walk around 6:30 am is noticeably better.
Thanjavur vs the rest of India
Across 260 India cities we track, the average US AQI right now is 116 (Unhealthy for Sensitive Groups). Thanjavur at 48 is 68 points cleaner than average.
It ranks 19 of 260 from cleanest to most polluted; the cleanest is Dindigul (25) and the most polluted Karnāl (402).
For context, the median across 3,909 cities worldwide is 56.
Air quality in cities near Thanjavur
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Tiruchirappalli | 48 km | 31 | Good | 6.3 |
| Kallakurichi | 107 km | 35 | Good | 14.2 |
| Dindigul | 135 km | 25 | Good | 4.5 |
| Salem | 144 km | 41 | Good | 13.8 |
| Madurai | 147 km | 51 | Moderate | 12.7 |
| Gundupālaiyam | 147 km | 30 | Good | 6.6 |
| Puducherry | 148 km | 30 | Good | 6.6 |
| Erode | 166 km | 40 | Good | 10.9 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Thanjavur, so the numbers on this page are model estimates. Models capture regional pollution well but can miss very local sources such as a busy road or a nearby fire.
Advice for sensitive groups
With the AQI at 48, there is no need for sensitive groups to change plans. People with asthma should still carry their reliever inhaler as usual.
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Values on this page are modelled by CAMS (Copernicus) and served by Open-Meteo; they are estimates for the area around the city centre, not readings from an official monitor.
Nearby cities
More for Thanjavur
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).