Coimbatore vs Firozabad
Side-by-side air quality comparison between Coimbatore and Firozabad.
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 | Firozabad |
|---|---|---|
| PM2.5(µg/m³) | 2.10 | 51.70 |
| PM10(µg/m³) | 2.50 | 268.20 |
| NO₂(µg/m³) | 1.50 | 0.70 |
| SO₂(µg/m³) | 1.20 | 5.90 |
| O₃(µg/m³) | 68.00 | 168.00 |
| CO(µg/m³) | 135.00 | 268.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Firozabad averaged 73 — a 7-point (11%) gap, with Firozabad the more polluted and Coimbatore the cleaner of the two. On 601 days when both cities reported, Coimbatore was cleaner on 469 of them; the average daily gap was 69 AQI points.
Seasonality & days
Coimbatore peaks in November, while Firozabad peaks in January. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Firozabad was 0.6% Severe and 56.6% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Firozabad 68 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Firozabad has improved by 70 AQI points (49%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Firozabad hit AQI 489 at Nagla Bhau (UPPCB) on 2021-11-09.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Firozabad spans 2 stations with a 19-point spread (min 88, max 107).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Firozabad's 219. That's a significant difference of 215 points.