Ghaziabad vs Kollam
Side-by-side air quality comparison between Ghaziabad 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, Ghaziabad averaged an AQI of 177 while Kollam averaged 84 — a 93-point (111%) gap, with Ghaziabad the more polluted and Kollam the cleaner of the two. On 1119 days when both cities reported, Kollam was cleaner on 1035 of them; the average daily gap was 159 AQI points.
Seasonality & days
Ghaziabad peaks in November, while Kollam peaks in January. Ghaziabad logged 12.2% Severe days and 13.700000000000001% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Ghaziabad 19 days, Kollam 65 days.
Year-over-year progress
Ghaziabad has improved by 115 AQI points (39.4%) from 2017 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Ghaziabad reached AQI 500 at Vasundhara (UPPCB) on 2017-12-21; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Ghaziabad spans 4 CPCB stations with a 30-point spread (min 198, max 228); Kollam spans 1 stations with a 0-point spread (min 84, max 84).