Coimbatore vs Ghaziabad
Side-by-side air quality comparison between Coimbatore and Ghaziabad.
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 | Ghaziabad |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 69.60 |
| PM10(µg/m³) | 2.90 | 96.40 |
| NO₂(µg/m³) | 4.50 | 27.40 |
| SO₂(µg/m³) | 2.20 | 11.00 |
| O₃(µg/m³) | 43.00 | 65.00 |
| CO(µg/m³) | 159.00 | 542.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Ghaziabad averaged 177 — a 111-point (168%) gap, with Ghaziabad the more polluted and Coimbatore the cleaner of the two. On 1005 days when both cities reported, Coimbatore was cleaner on 979 of them; the average daily gap was 175 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; Ghaziabad was 12.2% Severe and 13.700000000000001% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Ghaziabad 19 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Ghaziabad has improved by 115 AQI points (39.4%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Ghaziabad hit AQI 500 at Vasundhara (UPPCB) on 2017-12-21.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Ghaziabad spans 4 stations with a 30-point spread (min 198, max 228).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Ghaziabad's 133. That's a significant difference of 128 points.