Bidar vs Kollam
Side-by-side air quality comparison between Bidar 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, Bidar averaged an AQI of 85 while Kollam averaged 84 — a 1-point (1%) gap, with Bidar the more polluted and Kollam the cleaner of the two. On 660 days when both cities reported, Bidar was cleaner on 361 of them; the average daily gap was 34 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Bidar logged 0.1% Severe days and 72.5% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Bidar 24 days, Kollam 65 days.
Year-over-year progress
Bidar has worsened by 1 AQI points (1.2%) from 2021 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Bidar reached AQI 437 at Naubad (KSPCB) on 2022-01-25; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Bidar spans 1 CPCB stations with a 0-point spread (min 84, max 84); Kollam spans 1 stations with a 0-point spread (min 84, max 84).