Aizawl vs Coimbatore
Side-by-side air quality comparison between Aizawl and Coimbatore.
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 | Aizawl | Coimbatore |
|---|---|---|
| PM2.5(µg/m³) | 23.70 | 2.40 |
| PM10(µg/m³) | 34.10 | 2.70 |
| NO₂(µg/m³) | 4.90 | 4.70 |
| SO₂(µg/m³) | 3.20 | 2.10 |
| O₃(µg/m³) | 63.00 | 40.00 |
| CO(µg/m³) | 238.00 | 154.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Aizawl averaged an AQI of 46 while Coimbatore averaged 66 — a 20-point (43%) gap, with Coimbatore the more polluted and Aizawl the cleaner of the two. On 713 days when both cities reported, Aizawl was cleaner on 530 of them; the average daily gap was 35 AQI points.
Seasonality & days
Aizawl peaks in March, while Coimbatore peaks in November. Aizawl logged 0% Severe days and 94.2% Good-or-Satisfactory days; Coimbatore was 0% Severe and 90.5% Good-or-Satisfactory. Longest clean-air streaks: Aizawl 76 days, Coimbatore 32 days.
Year-over-year progress
Aizawl has worsened by 16 AQI points (53.3%) from 2020 to 2024; Coimbatore has improved by 5 AQI points (7%) over the same window. The worst recorded day for Aizawl reached AQI 208 at Sikulpuikawn Aizawl (PCB) on 2021-01-20; Coimbatore hit AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28.
Station-level disparity
Aizawl spans 1 CPCB stations with a 0-point spread (min 43, max 43); Coimbatore spans 2 stations with a 1-point spread (min 63, max 64).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Aizawl's 40.