Hapur vs Kollam
Side-by-side air quality comparison between Hapur and Kollam.
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, Hapur averaged an AQI of 142 while Kollam averaged 84 — a 58-point (69%) gap, with Hapur the more polluted and Kollam the cleaner of the two. On 1337 days when both cities reported, Kollam was cleaner on 956 of them; the average daily gap was 80 AQI points.
Seasonality & days
Hapur peaks in November, while Kollam peaks in January. Hapur logged 1.9% Severe days and 36.2% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Hapur 55 days, Kollam 65 days.
Year-over-year progress
Hapur has improved by 197 AQI points (58.1%) from 2018 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Hapur reached AQI 477 at Anand Vihar (UPPCB) on 2019-10-31; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Hapur spans 1 CPCB stations with a 0-point spread (min 159, max 159); Kollam spans 1 stations with a 0-point spread (min 84, max 84).