Bhiwāni vs Kollam
Side-by-side air quality comparison between Bhiwāni 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, Bhiwāni averaged an AQI of 134 while Kollam averaged 84 — a 50-point (60%) gap, with Bhiwāni the more polluted and Kollam the cleaner of the two. On 1300 days when both cities reported, Kollam was cleaner on 1019 of them; the average daily gap was 72 AQI points.
Seasonality & days
Bhiwāni peaks in November, while Kollam peaks in January. Bhiwāni logged 0.6% Severe days and 36.4% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Bhiwāni 33 days, Kollam 65 days.
Year-over-year progress
Bhiwāni has improved by 15 AQI points (10.1%) from 2019 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Bhiwāni reached AQI 471 at HB Colony (HSPCB) on 2019-11-13; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Bhiwāni spans 1 CPCB stations with a 0-point spread (min 144, max 144); Kollam spans 1 stations with a 0-point spread (min 84, max 84).