Begusarai vs Siwan
Side-by-side air quality comparison between Begusarai 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, Begusarai averaged an AQI of 128 while Siwan averaged 148 — a 20-point (16%) gap, with Siwan the more polluted and Begusarai the cleaner of the two. On 292 days when both cities reported, Siwan was cleaner on 190 of them; the average daily gap was 71 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Begusarai logged 8.7% Severe days and 20.8% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Begusarai 14 days, Siwan 13 days.
Year-over-year progress
Begusarai has improved by 137 AQI points (51.7%) from 2023 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Begusarai reached AQI 469 at Lohiyanagar (BSPCB) on 2023-01-14; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Begusarai spans 1 CPCB stations with a 0-point spread (min 213, max 213); Siwan spans 1 stations with a 0-point spread (min 197, max 197).