Kolkata vs Kozhikode
Side-by-side air quality comparison between Kolkata and Kozhikode.
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 Kozhikode averaged 78 — a 23-point (29%) gap, with Kolkata the more polluted and Kozhikode the cleaner of the two. On 944 days when both cities reported, Kozhikode was cleaner on 842 of them; the average daily gap was 102 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; Kozhikode was 0.1% Severe and 99% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Kozhikode 83 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Kozhikode has worsened by 29 AQI points (59.2%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Kozhikode hit AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Kozhikode spans 1 stations with a 0-point spread (min 59, max 59).