Kollam vs Tirupati
Side-by-side air quality comparison between Kollam and Tirupati.
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 Tirupati averaged 75 — a 9-point (12%) gap, with Kollam the more polluted and Tirupati the cleaner of the two. On 404 days when both cities reported, Tirupati was cleaner on 251 of them; the average daily gap was 38 AQI points.
Seasonality & days
Kollam peaks in January, while Tirupati peaks in April. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Tirupati was 0% Severe and 84% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Tirupati 36 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Tirupati has improved by 20 AQI points (21.1%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Tirupati hit AQI 263 at Vaikuntapuram (APPCB) on 2022-11-16.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Tirupati spans 1 stations with a 0-point spread (min 75, max 75).