Kollam vs Saharsa
Side-by-side air quality comparison between Kollam and Saharsa.
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 Saharsa averaged 139 — a 55-point (65%) gap, with Saharsa the more polluted and Kollam the cleaner of the two. On 748 days when both cities reported, Kollam was cleaner on 620 of them; the average daily gap was 118 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Saharsa was 1.4% Severe and 28.4% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Saharsa 20 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Saharsa has improved by 139 AQI points (50%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Saharsa hit AQI 454 at Police Line (BSPCB) on 2022-12-13.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Saharsa spans 1 stations with a 0-point spread (min 188, max 188).