Bidar vs Kolkata
Side-by-side air quality comparison between Bidar 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, Bidar averaged an AQI of 85 while Kolkata averaged 101 — a 16-point (19%) gap, with Kolkata the more polluted and Bidar the cleaner of the two. On 563 days when both cities reported, Bidar was cleaner on 434 of them; the average daily gap was 88 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Bidar logged 0.1% Severe days and 72.5% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Bidar 24 days, Kolkata 75 days.
Year-over-year progress
Bidar has worsened by 1 AQI points (1.2%) from 2021 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Bidar reached AQI 437 at Naubad (KSPCB) on 2022-01-25; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Bidar spans 1 CPCB stations with a 0-point spread (min 84, max 84); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).