Dewās vs Kolkata
Side-by-side air quality comparison between Dewās 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, Dewās averaged an AQI of 98 while Kolkata averaged 101 — a 3-point (3%) gap, with Kolkata the more polluted and Dewās the cleaner of the two. On 1963 days when both cities reported, Dewās was cleaner on 1263 of them; the average daily gap was 75 AQI points.
Seasonality & days
Dewās peaks in December, while Kolkata peaks in January. Dewās logged 0% Severe days and 47.7% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Dewās 101 days, Kolkata 75 days.
Year-over-year progress
Dewās has improved by 48 AQI points (32.9%) from 2017 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Dewās reached AQI 327 at Bhopal Chauraha (MPPCB) on 2023-07-01; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Dewās spans 1 CPCB stations with a 0-point spread (min 106, max 106); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).