Bidar vs Purnia
Side-by-side air quality comparison between Bidar and Purnia.
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 Purnia averaged 133 — a 48-point (56%) gap, with Purnia the more polluted and Bidar the cleaner of the two. On 491 days when both cities reported, Bidar was cleaner on 424 of them; the average daily gap was 113 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; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Bidar 24 days, Purnia 14 days.
Year-over-year progress
Bidar has worsened by 1 AQI points (1.2%) from 2021 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Bidar reached AQI 437 at Naubad (KSPCB) on 2022-01-25; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Bidar spans 1 CPCB stations with a 0-point spread (min 84, max 84); Purnia spans 1 stations with a 0-point spread (min 176, max 176).