Gaya vs Siwan
Side-by-side air quality comparison between Gaya 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, Gaya averaged an AQI of 110 while Siwan averaged 148 — a 38-point (35%) gap, with Siwan the more polluted and Gaya the cleaner of the two. On 807 days when both cities reported, Gaya was cleaner on 428 of them; the average daily gap was 64 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Gaya logged 1.7% Severe days and 32% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Gaya 52 days, Siwan 13 days.
Year-over-year progress
Gaya has improved by 89 AQI points (44.7%) from 2016 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Gaya reached AQI 500 at Collectorate (BSPCB) on 2016-10-15; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Gaya spans 3 CPCB stations with a 85-point spread (min 88, max 173); Siwan spans 1 stations with a 0-point spread (min 197, max 197).