Kollam vs Ujjain
Side-by-side air quality comparison between Kollam and Ujjain.
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 Ujjain averaged 116 — a 32-point (38%) gap, with Ujjain the more polluted and Kollam the cleaner of the two. On 1313 days when both cities reported, Kollam was cleaner on 1038 of them; the average daily gap was 55 AQI points.
Seasonality & days
Kollam peaks in January, while Ujjain peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Ujjain 67 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).