Kollam vs Mumbai
Side-by-side air quality comparison between Kollam and Mumbai.
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, Kollam averaged an AQI of 84 while Mumbai averaged 93 — a 9-point (11%) gap, with Mumbai the more polluted and Kollam the cleaner of the two. On 1119 days when both cities reported, Kollam was cleaner on 1029 of them; the average daily gap was 109 AQI points.
Seasonality & days
Kollam peaks in January, while Mumbai peaks in December. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Mumbai was 0.5% Severe and 34% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Mumbai 58 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Mumbai has improved by 4 AQI points (4.1%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Mumbai hit AQI 500 at Vile Parle West (MPCB) on 2022-08-15.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Mumbai spans 29 stations with a 74-point spread (min 77, max 151).