Kolkata vs Thane
Side-by-side air quality comparison between Kolkata and Thane.
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, Kolkata averaged an AQI of 101 while Thane averaged 95 — a 6-point (6%) gap, with Kolkata the more polluted and Thane the cleaner of the two. On 361 days when both cities reported, Thane was cleaner on 234 of them; the average daily gap was 46 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Thane was 0% Severe and 53.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Thane 99 days.
Year-over-year progress
The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Thane hit AQI 302 at Kasarvadavali (MPCB) on 2024-03-21.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Thane spans 2 stations with a 9-point spread (min 90, max 99).