Perungudi, Chennai - TNPCB
Chennai, TamilNadu. Readings are pollutant sub-indices (min / max / average) from the CPCB monitoring network—not a single composite national AQI headline.
Last update (source): · Coordinates: 12.9533, 80.2357
Showing data from our last import: .
| Pollutant | Min | Max | Average |
|---|---|---|---|
| CO | 22 | 46 | 33 |
| NH3 | NA | NA | NA |
| NO2 | 3 | 5 | 4 |
| OZONE | 1 | 2 | 2 |
| PM10 | 19 | 71 | 41 |
| PM2.5 | 10 | 53 | 30 |
| SO2 | 1 | 8 | 4 |
FAQ
- What do min, max, and average mean here?
- These are pollutant sub-index values for the monitoring station as held in DeshSeva. They are not the same as a single composite National AQI headline number; readings are per pollutant (e.g. PM2.5, PM10).
- Where does this data come from?
- DeshSeva can sync snapshots into our database on a schedule; otherwise this page may fetch live readings depending on setup.
- Why do some values show NA?
- When a pollutant is not reported or not available for that interval, the source may publish NA for min, max, or average.
For methodology and official readings, see CPCB.