Dewās vs Siwan
Side-by-side air quality comparison between Dewās 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, Dewās averaged an AQI of 98 while Siwan averaged 148 — a 50-point (51%) gap, with Siwan the more polluted and Dewās the cleaner of the two. On 743 days when both cities reported, Dewās was cleaner on 632 of them; the average daily gap was 102 AQI points.
Seasonality & days
Dewās peaks in December, while Siwan peaks in January. Dewās logged 0% Severe days and 47.7% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Dewās 101 days, Siwan 13 days.
Year-over-year progress
Dewās has improved by 48 AQI points (32.9%) from 2017 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Dewās reached AQI 327 at Bhopal Chauraha (MPPCB) on 2023-07-01; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Dewās spans 1 CPCB stations with a 0-point spread (min 106, max 106); Siwan spans 1 stations with a 0-point spread (min 197, max 197).