Rourkela vs Siwan
Side-by-side air quality comparison between Rourkela 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 | Rourkela | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 111.80 | 114.60 |
| PM10(µg/m³) | 123.90 | 125.70 |
| NO₂(µg/m³) | 35.70 | 44.50 |
| SO₂(µg/m³) | 23.90 | 15.40 |
| O₃(µg/m³) | 66.00 | 54.00 |
| CO(µg/m³) | 408.00 | 761.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Rourkela averaged an AQI of 115 while Siwan averaged 148 — a 33-point (29%) gap, with Siwan the more polluted and Rourkela the cleaner of the two. On 242 days when both cities reported, Rourkela was cleaner on 133 of them; the average daily gap was 74 AQI points.
Seasonality & days
Rourkela peaks in November, while Siwan peaks in January. Rourkela logged 0% Severe days and 32.9% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Rourkela 60 days, Siwan 13 days.
Year-over-year progress
Rourkela has improved by 112 AQI points (49.3%) from 2022 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Rourkela reached AQI 344 at Raghunathpali (OSPCB) on 2024-01-01; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Rourkela spans 3 CPCB stations with a 29-point spread (min 106, max 135); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Rourkela has better air quality with an AQI of 273 compared to Siwan's 282.