Patna vs Siwan
Side-by-side air quality comparison between Patna 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, Patna averaged an AQI of 172 while Siwan averaged 148 — a 24-point (16%) gap, with Patna the more polluted and Siwan the cleaner of the two. On 809 days when both cities reported, Siwan was cleaner on 649 of them; the average daily gap was 87 AQI points.
Seasonality & days
Patna peaks in December, while Siwan peaks in January. Patna logged 7.5% Severe days and 19.400000000000002% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Patna 30 days, Siwan 13 days.
Year-over-year progress
Patna has improved by 40 AQI points (18.9%) from 2016 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Patna reached AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Patna spans 6 CPCB stations with a 39-point spread (min 154, max 193); Siwan spans 1 stations with a 0-point spread (min 197, max 197).