Kollam vs Meerut
Side-by-side air quality comparison between Kollam and Meerut.
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 Meerut averaged 144 — a 60-point (71%) gap, with Meerut the more polluted and Kollam the cleaner of the two. On 1118 days when both cities reported, Kollam was cleaner on 951 of them; the average daily gap was 122 AQI points.
Seasonality & days
Kollam peaks in January, while Meerut peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Meerut was 2% Severe and 22.299999999999997% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Meerut 25 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Meerut has improved by 116 AQI points (44.6%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Meerut hit AQI 490 at Pallavpuram Phase 2 (UPPCB) on 2020-11-05.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Meerut spans 3 stations with a 13-point spread (min 172, max 185).