Coimbatore vs Prayagraj
Side-by-side air quality comparison between Coimbatore and Prayagraj.
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 | Prayagraj |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 61.00 |
| PM10(µg/m³) | 2.90 | 73.80 |
| NO₂(µg/m³) | 4.50 | 45.90 |
| SO₂(µg/m³) | 2.20 | 15.60 |
| O₃(µg/m³) | 43.00 | 36.00 |
| CO(µg/m³) | 159.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Prayagraj averaged 80 — a 14-point (21%) gap, with Prayagraj the more polluted and Coimbatore the cleaner of the two. On 617 days when both cities reported, Coimbatore was cleaner on 530 of them; the average daily gap was 64 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; Prayagraj was 0.2% Severe and 48% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Prayagraj 69 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Prayagraj has improved by 42 AQI points (34.4%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Prayagraj hit AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Prayagraj spans 3 stations with a 9-point spread (min 96, max 105).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Prayagraj's 104. That's a significant difference of 99 points.