Bilaspur vs Siwan
Side-by-side air quality comparison between Bilaspur 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, Bilaspur averaged an AQI of 61 while Siwan averaged 148 — a 87-point (143%) gap, with Siwan the more polluted and Bilaspur the cleaner of the two. On 675 days when both cities reported, Bilaspur was cleaner on 622 of them; the average daily gap was 125 AQI points.
Seasonality & days
Bilaspur peaks in December, while Siwan peaks in January. Bilaspur logged 0% Severe days and 88% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Bilaspur 66 days, Siwan 13 days.
Year-over-year progress
Bilaspur has improved by 22 AQI points (26.5%) from 2021 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Bilaspur reached AQI 259 at Mangala (NTPC) on 2023-03-09; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Bilaspur spans 1 CPCB stations with a 0-point spread (min 69, max 69); Siwan spans 1 stations with a 0-point spread (min 197, max 197).