Kolkata vs Sikar
Side-by-side air quality comparison between Kolkata and Sikar.
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 Sikar averaged 139 — a 38-point (38%) gap, with Sikar the more polluted and Kolkata the cleaner of the two. On 351 days when both cities reported, Kolkata was cleaner on 201 of them; the average daily gap was 49 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; Sikar was 0.2% Severe and 34% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Sikar 32 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Sikar has worsened by 4 AQI points (3%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Sikar hit AQI 452 at Radhakishan Pura (RSPCB) on 2023-11-16.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Sikar spans 1 stations with a 0-point spread (min 137, max 137).