Khanna vs Kolkata
Side-by-side air quality comparison between Khanna 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, Khanna averaged an AQI of 102 while Kolkata averaged 101 — a 1-point (1%) gap, with Khanna the more polluted and Kolkata the cleaner of the two. On 357 days when both cities reported, Khanna was cleaner on 195 of them; the average daily gap was 57 AQI points.
Seasonality & days
Khanna peaks in November, while Kolkata peaks in January. Khanna logged 0% Severe days and 61.599999999999994% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Khanna 60 days, Kolkata 75 days.
Year-over-year progress
Khanna has worsened by 4 AQI points (4.1%) from 2023 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Khanna reached AQI 297 at Kalal Majra (PPCB) on 2023-11-09; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Khanna spans 1 CPCB stations with a 0-point spread (min 100, max 100); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).