Sagar vs Siwan
Side-by-side air quality comparison between Sagar 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, Sagar averaged an AQI of 96 while Siwan averaged 148 — a 52-point (54%) gap, with Siwan the more polluted and Sagar the cleaner of the two. On 450 days when both cities reported, Sagar was cleaner on 366 of them; the average daily gap was 110 AQI points.
Seasonality & days
Sagar peaks in November, while Siwan peaks in January. Sagar logged 0% Severe days and 69.9% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Sagar 57 days, Siwan 13 days.
Year-over-year progress
Sagar has worsened by 24 AQI points (33.3%) from 2020 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Sagar reached AQI 347 at Civil Lines (MPPCB) on 2024-12-25; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Sagar spans 2 CPCB stations with a 45-point spread (min 73, max 118); Siwan spans 1 stations with a 0-point spread (min 197, max 197).