Coimbatore vs Tālcher
Side-by-side air quality comparison between Coimbatore and Tālcher.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Coimbatore | Tālcher |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 65.90 |
| PM10(µg/m³) | 3.00 | 72.20 |
| NO₂(µg/m³) | 4.60 | 25.60 |
| SO₂(µg/m³) | 2.00 | 5.80 |
| O₃(µg/m³) | 40.00 | 19.00 |
| CO(µg/m³) | 163.00 | 508.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Tālcher averaged 127 — a 61-point (92%) gap, with Tālcher the more polluted and Coimbatore the cleaner of the two. On 543 days when both cities reported, Coimbatore was cleaner on 460 of them; the average daily gap was 61 AQI points.
Seasonality & days
Coimbatore peaks in November, while Tālcher peaks in December. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Tālcher was 0.2% Severe and 43.1% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Tālcher 44 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Tālcher has improved by 63 AQI points (33.2%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Tālcher hit AQI 414 at Talcher (OSPCB) on 2018-11-27.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Tālcher spans 1 stations with a 0-point spread (min 132, max 132).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Tālcher's 120. That's a significant difference of 116 points.