Coimbatore vs Imphal
Side-by-side air quality comparison between Coimbatore and Imphal.
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 | Imphal |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 36.40 |
| PM10(µg/m³) | 2.90 | 44.50 |
| NO₂(µg/m³) | 4.50 | 7.20 |
| SO₂(µg/m³) | 2.20 | 2.20 |
| O₃(µg/m³) | 43.00 | 60.00 |
| CO(µg/m³) | 159.00 | 323.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Imphal averaged 110 — a 44-point (67%) gap, with Imphal the more polluted and Coimbatore the cleaner of the two. On 412 days when both cities reported, Coimbatore was cleaner on 369 of them; the average daily gap was 59 AQI points.
Seasonality & days
Coimbatore peaks in November, while Imphal peaks in October. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Imphal was 1.1% Severe and 49.400000000000006% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Imphal 103 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Imphal has worsened by 23 AQI points (26.4%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Imphal hit AQI 500 at University Imphal (PCB) on 2024-10-11.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Imphal spans 2 stations with a 4-point spread (min 97, max 101).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Imphal's 61. That's a significant difference of 56 points.