Kollam vs Ooty
Side-by-side air quality comparison between Kollam and Ooty.
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 Ooty averaged 58 — a 26-point (45%) gap, with Kollam the more polluted and Ooty the cleaner of the two. On 497 days when both cities reported, Ooty was cleaner on 402 of them; the average daily gap was 32 AQI points.
Seasonality & days
Kollam peaks in January, while Ooty peaks in May. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Ooty was 0% Severe and 94.2% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Ooty 22 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Ooty is essentially flat over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Ooty hit AQI 164 at Bombay Castel (TNPCB) on 2024-12-17.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Ooty spans 1 stations with a 0-point spread (min 59, max 59).