Kollam vs Thiruvananthapuram
Side-by-side air quality comparison between Kollam and Thiruvananthapuram.
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 Thiruvananthapuram averaged 56 — a 28-point (50%) gap, with Kollam the more polluted and Thiruvananthapuram the cleaner of the two. On 1111 days when both cities reported, Thiruvananthapuram was cleaner on 816 of them; the average daily gap was 29 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; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Thiruvananthapuram 172 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Thiruvananthapuram spans 2 stations with a 7-point spread (min 57, max 64).