Coimbatore vs Tonk
Side-by-side air quality comparison between Coimbatore and Tonk.
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 | Tonk |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 27.80 |
| PM10(µg/m³) | 2.90 | 53.10 |
| NO₂(µg/m³) | 4.50 | 9.00 |
| SO₂(µg/m³) | 2.20 | 4.10 |
| O₃(µg/m³) | 43.00 | 47.00 |
| CO(µg/m³) | 159.00 | 206.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Tonk averaged 142 — a 76-point (115%) gap, with Tonk the more polluted and Coimbatore the cleaner of the two. On 243 days when both cities reported, Coimbatore was cleaner on 218 of them; the average daily gap was 81 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Tonk was 0% Severe and 28.200000000000003% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Tonk 11 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Tonk has improved by 14 AQI points (9%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Tonk hit AQI 368 at Shastri Nagar (RSPCB) on 2023-11-17.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Tonk spans 1 stations with a 0-point spread (min 148, max 148).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Tonk's 54.