Chennai vs Hassan
Side-by-side air quality comparison between Chennai and Hassan.
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, Chennai averaged an AQI of 68 while Hassan averaged 60 — a 8-point (13%) gap, with Chennai the more polluted and Hassan the cleaner of the two. On 791 days when both cities reported, Hassan was cleaner on 649 of them; the average daily gap was 49 AQI points.
Seasonality & days
Chennai peaks in December, while Hassan peaks in March. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Hassan was 0% Severe and 92.5% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Hassan 51 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Hassan has improved by 4 AQI points (6.2%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Hassan hit AQI 212 at BKatihalli (KSPCB) on 2024-05-11.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Hassan spans 1 stations with a 0-point spread (min 63, max 63).