Bhilai vs Kolkata
Side-by-side air quality comparison between Bhilai and Kolkata.
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, Bhilai averaged an AQI of 73 while Kolkata averaged 101 — a 28-point (38%) gap, with Kolkata the more polluted and Bhilai the cleaner of the two. On 453 days when both cities reported, Bhilai was cleaner on 357 of them; the average daily gap was 73 AQI points.
Seasonality & days
Bhilai peaks in November, while Kolkata peaks in January. Bhilai logged 0% Severe days and 71.6% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Bhilai 119 days, Kolkata 75 days.
Year-over-year progress
Bhilai has worsened by 8 AQI points (12.3%) from 2021 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Bhilai reached AQI 288 at Hathkhoj (CECB) on 2023-12-26; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Bhilai spans 3 CPCB stations with a 25-point spread (min 59, max 84); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).