Bulandshahr vs Siwan
Side-by-side air quality comparison between Bulandshahr 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, Bulandshahr averaged an AQI of 142 while Siwan averaged 148 — a 6-point (4%) gap, with Siwan the more polluted and Bulandshahr the cleaner of the two. On 803 days when both cities reported, Bulandshahr was cleaner on 482 of them; the average daily gap was 74 AQI points.
Seasonality & days
Bulandshahr peaks in November, while Siwan peaks in January. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Siwan 13 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); Siwan spans 1 stations with a 0-point spread (min 197, max 197).