Coimbatore vs Kishanganj
Side-by-side air quality comparison between Coimbatore and Kishanganj.
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 | Kishanganj |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 85.40 |
| PM10(µg/m³) | 2.90 | 88.50 |
| NO₂(µg/m³) | 4.50 | 13.00 |
| SO₂(µg/m³) | 2.20 | 11.50 |
| O₃(µg/m³) | 43.00 | 88.00 |
| CO(µg/m³) | 159.00 | 750.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Kishanganj averaged 144 — a 78-point (118%) gap, with Kishanganj the more polluted and Coimbatore the cleaner of the two. On 492 days when both cities reported, Coimbatore was cleaner on 437 of them; the average daily gap was 96 AQI points.
Seasonality & days
Coimbatore peaks in November, while Kishanganj peaks in January. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Kishanganj was 0.2% Severe and 37.099999999999994% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Kishanganj 23 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Kishanganj has improved by 136 AQI points (48.6%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Kishanganj hit AQI 417 at SDM Office Khagra (BSPCB) on 2022-02-01.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Kishanganj spans 1 stations with a 0-point spread (min 156, max 156).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Kishanganj's 185. That's a significant difference of 180 points.