Hyderabad vs Kolkata
Side-by-side air quality comparison between Hyderabad 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, Hyderabad averaged an AQI of 78 while Kolkata averaged 101 — a 23-point (29%) gap, with Kolkata the more polluted and Hyderabad the cleaner of the two. On 2076 days when both cities reported, Hyderabad was cleaner on 1116 of them; the average daily gap was 69 AQI points.
Seasonality & days
Hyderabad peaks in December, while Kolkata peaks in January. Hyderabad logged 0.2% Severe days and 41.6% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Hyderabad 71 days, Kolkata 75 days.
Year-over-year progress
Hyderabad has improved by 24 AQI points (23.5%) from 2016 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Hyderabad reached AQI 500 at Sanathnagar (TSPCB) on 2024-04-28; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Hyderabad spans 14 CPCB stations with a 35-point spread (min 62, max 97); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).