Karnal vs Kollam
Side-by-side air quality comparison between Karnal 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, Karnal averaged an AQI of 102 while Kollam averaged 84 — a 18-point (21%) gap, with Karnal the more polluted and Kollam the cleaner of the two. On 1316 days when both cities reported, Kollam was cleaner on 834 of them; the average daily gap was 58 AQI points.
Seasonality & days
Karnal peaks in November, while Kollam peaks in January. Karnal logged 0.1% Severe days and 46.2% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Karnal 53 days, Kollam 65 days.
Year-over-year progress
Karnal has improved by 71 AQI points (41%) from 2019 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Karnal reached AQI 456 at Sector-12 (HSPCB) on 2019-11-03; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Karnal spans 1 CPCB stations with a 0-point spread (min 128, max 128); Kollam spans 1 stations with a 0-point spread (min 84, max 84).