Bidar vs Siwan
Side-by-side air quality comparison between Bidar and Siwan.
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 Siwan averaged 148 — a 63-point (74%) gap, with Siwan the more polluted and Bidar the cleaner of the two. On 458 days when both cities reported, Bidar was cleaner on 417 of them; the average daily gap was 128 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; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Bidar 24 days, Siwan 13 days.
Year-over-year progress
Bidar has worsened by 1 AQI points (1.2%) from 2021 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Bidar reached AQI 437 at Naubad (KSPCB) on 2022-01-25; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Bidar spans 1 CPCB stations with a 0-point spread (min 84, max 84); Siwan spans 1 stations with a 0-point spread (min 197, max 197).