Coimbatore vs Varanasi
Side-by-side air quality comparison between Coimbatore and Varanasi.
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 | Varanasi |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 48.20 |
| PM10(µg/m³) | 3.00 | 57.90 |
| NO₂(µg/m³) | 4.60 | 38.80 |
| SO₂(µg/m³) | 2.00 | 27.00 |
| O₃(µg/m³) | 40.00 | 22.00 |
| CO(µg/m³) | 163.00 | 523.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Varanasi averaged 56 — a 10-point (18%) gap, with Coimbatore the more polluted and Varanasi the cleaner of the two. On 965 days when both cities reported, Coimbatore was cleaner on 725 of them; the average daily gap was 69 AQI points.
Seasonality & days
Coimbatore peaks in November, while Varanasi peaks in January. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Varanasi was 2.8% Severe and 36% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Varanasi 87 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Varanasi has improved by 169 AQI points (75.1%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Varanasi hit AQI 500 at Ardhali Bazar (UPPCB) on 2017-07-11.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Varanasi spans 4 stations with a 94-point spread (min 71, max 165).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Varanasi's 81. That's a significant difference of 77 points.