Coimbatore vs Patna
Side-by-side air quality comparison between Coimbatore and Patna.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Patna averaged 172 — a 106-point (161%) gap, with Patna the more polluted and Coimbatore the cleaner of the two. On 983 days when both cities reported, Coimbatore was cleaner on 945 of them; the average daily gap was 159 AQI points.
Seasonality & days
Coimbatore peaks in November, while Patna peaks in December. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Patna 30 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Patna spans 6 stations with a 39-point spread (min 154, max 193).