Kolkata vs Noida
Side-by-side air quality comparison between Kolkata and Noida.
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 Noida averaged 182 — a 81-point (80%) gap, with Noida the more polluted and Kolkata the cleaner of the two. On 2073 days when both cities reported, Kolkata was cleaner on 1698 of them; the average daily gap was 94 AQI points.
Seasonality & days
Kolkata peaks in January, while Noida peaks in November. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Noida was 8.9% Severe and 16.5% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Noida 14 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Noida has improved by 79 AQI points (30.3%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Noida hit AQI 500 at Sector-1 (UPPCB) on 2019-11-01.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Noida spans 4 stations with a 15-point spread (min 195, max 210).