Coimbatore vs Mumbai
Side-by-side air quality comparison between Coimbatore and Mumbai.
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 | Mumbai |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 17.60 |
| PM10(µg/m³) | 3.00 | 41.60 |
| NO₂(µg/m³) | 4.60 | 10.60 |
| SO₂(µg/m³) | 2.00 | 11.40 |
| O₃(µg/m³) | 40.00 | 42.00 |
| CO(µg/m³) | 163.00 | 176.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Mumbai averaged 93 — a 27-point (41%) gap, with Mumbai the more polluted and Coimbatore the cleaner of the two. On 1005 days when both cities reported, Coimbatore was cleaner on 959 of them; the average daily gap was 115 AQI points.
Seasonality & days
Coimbatore peaks in November, while Mumbai peaks in December. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Mumbai was 0.5% Severe and 34% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Mumbai 58 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Mumbai has improved by 4 AQI points (4.1%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Mumbai hit AQI 500 at Vile Parle West (MPCB) on 2022-08-15.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Mumbai spans 29 stations with a 74-point spread (min 77, max 151).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Mumbai's 42.