Coimbatore vs Hisar
Side-by-side air quality comparison between Coimbatore and Hisar.
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 | Hisar |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 75.70 |
| PM10(µg/m³) | 2.90 | 224.40 |
| NO₂(µg/m³) | 4.50 | 34.70 |
| SO₂(µg/m³) | 2.20 | 8.30 |
| O₃(µg/m³) | 43.00 | 43.00 |
| CO(µg/m³) | 159.00 | 508.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Hisar averaged 136 — a 70-point (106%) gap, with Hisar the more polluted and Coimbatore the cleaner of the two. On 907 days when both cities reported, Coimbatore was cleaner on 827 of them; the average daily gap was 108 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; Hisar was 1.6% Severe and 29.700000000000003% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Hisar 34 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Hisar has improved by 39 AQI points (22.3%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Hisar hit AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Hisar spans 1 stations with a 0-point spread (min 168, max 168).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Hisar's 183. That's a significant difference of 178 points.