Coimbatore vs Hapur
Side-by-side air quality comparison between Coimbatore and Hapur.
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 | Hapur |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 71.90 |
| PM10(µg/m³) | 3.00 | 97.30 |
| NO₂(µg/m³) | 4.60 | 36.60 |
| SO₂(µg/m³) | 2.00 | 11.50 |
| O₃(µg/m³) | 40.00 | 36.00 |
| CO(µg/m³) | 163.00 | 589.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Hapur averaged 142 — a 76-point (115%) gap, with Hapur the more polluted and Coimbatore the cleaner of the two. On 887 days when both cities reported, Coimbatore was cleaner on 790 of them; the average daily gap was 103 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; Hapur was 1.9% Severe and 36.2% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Hapur 55 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Hapur has improved by 197 AQI points (58.1%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Hapur hit AQI 477 at Anand Vihar (UPPCB) on 2019-10-31.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Hapur spans 1 stations with a 0-point spread (min 159, max 159).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Hapur's 140. That's a significant difference of 136 points.