Bikaner vs Kolkata
Side-by-side air quality comparison between Bikaner 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, Bikaner averaged an AQI of 154 while Kolkata averaged 101 — a 53-point (52%) gap, with Bikaner the more polluted and Kolkata the cleaner of the two. On 358 days when both cities reported, Kolkata was cleaner on 240 of them; the average daily gap was 56 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Bikaner logged 0.1% Severe days and 21.6% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Bikaner 15 days, Kolkata 75 days.
Year-over-year progress
Bikaner has improved by 16 AQI points (9.4%) from 2023 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Bikaner reached AQI 403 at MM Ground (RSPCB) on 2024-11-17; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Bikaner spans 1 CPCB stations with a 0-point spread (min 162, max 162); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).