Hosur vs Siwan
Side-by-side air quality comparison between Hosur 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 2022, Hosur averaged an AQI of 90 while Siwan averaged 148 — a 58-point (64%) gap, with Siwan the more polluted and Hosur the cleaner of the two. On 68 days when both cities reported, Hosur was cleaner on 57 of them; the average daily gap was 198 AQI points.
Seasonality & days
Hosur peaks in December, while Siwan peaks in January. Hosur logged 0% Severe days and 73.89999999999999% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Hosur 10 days, Siwan 13 days.
Year-over-year progress
The worst recorded day for Hosur reached AQI 232 at SIPCOT Phase-1 (TNPCB) on 2022-10-25; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Hosur spans 1 CPCB stations with a 0-point spread (min 90, max 90); Siwan spans 1 stations with a 0-point spread (min 197, max 197).