Bettiah vs Kollam
Side-by-side air quality comparison between Bettiah 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, Bettiah averaged an AQI of 127 while Kollam averaged 84 — a 43-point (51%) gap, with Bettiah the more polluted and Kollam the cleaner of the two. On 681 days when both cities reported, Kollam was cleaner on 552 of them; the average daily gap was 104 AQI points.
Seasonality & days
Bettiah peaks in November, while Kollam peaks in January. Bettiah logged 3.2% Severe days and 32.3% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Bettiah 20 days, Kollam 65 days.
Year-over-year progress
Bettiah has improved by 73 AQI points (36.5%) from 2021 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Bettiah reached AQI 470 at Kamalnath Nagar (BSPCB) on 2023-01-01; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Bettiah spans 1 CPCB stations with a 0-point spread (min 173, max 173); Kollam spans 1 stations with a 0-point spread (min 84, max 84).