Bilaspur vs Chennai
Side-by-side air quality comparison between Bilaspur and Chennai.
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, Bilaspur averaged an AQI of 61 while Chennai averaged 68 — a 7-point (11%) gap, with Chennai the more polluted and Bilaspur the cleaner of the two. On 763 days when both cities reported, Bilaspur was cleaner on 640 of them; the average daily gap was 46 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Bilaspur logged 0% Severe days and 88% Good-or-Satisfactory days; Chennai was 0% Severe and 57.5% Good-or-Satisfactory. Longest clean-air streaks: Bilaspur 66 days, Chennai 53 days.
Year-over-year progress
Bilaspur has improved by 22 AQI points (26.5%) from 2021 to 2024; Chennai has improved by 25 AQI points (26.9%) over the same window. The worst recorded day for Bilaspur reached AQI 259 at Mangala (NTPC) on 2023-03-09; Chennai hit AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14.
Station-level disparity
Bilaspur spans 1 CPCB stations with a 0-point spread (min 69, max 69); Chennai spans 9 stations with a 27-point spread (min 63, max 90).