Sirsa vs Siwan
Side-by-side air quality comparison between Sirsa 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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Sirsa | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 70.50 | 114.60 |
| PM10(µg/m³) | 238.00 | 125.70 |
| NO₂(µg/m³) | 27.50 | 44.50 |
| SO₂(µg/m³) | 8.40 | 15.40 |
| O₃(µg/m³) | 54.00 | 54.00 |
| CO(µg/m³) | 316.00 | 761.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Sirsa averaged an AQI of 115 while Siwan averaged 148 — a 33-point (29%) gap, with Siwan the more polluted and Sirsa the cleaner of the two. On 428 days when both cities reported, Sirsa was cleaner on 317 of them; the average daily gap was 98 AQI points.
Seasonality & days
Sirsa peaks in November, while Siwan peaks in January. Sirsa logged 0.5% Severe days and 41.300000000000004% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Sirsa 40 days, Siwan 13 days.
Year-over-year progress
Sirsa has improved by 48 AQI points (29.4%) from 2019 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Sirsa reached AQI 462 at F-Block (HSPCB) on 2019-11-01; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Sirsa spans 1 CPCB stations with a 0-point spread (min 132, max 132); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Sirsa has better air quality with an AQI of 192 compared to Siwan's 282. That's a significant difference of 90 points.