Angul vs Siwan
Side-by-side air quality comparison between Angul 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 | Angul | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 65.90 | 108.00 |
| PM10(µg/m³) | 72.20 | 122.50 |
| NO₂(µg/m³) | 25.60 | 59.80 |
| SO₂(µg/m³) | 5.80 | 14.10 |
| O₃(µg/m³) | 19.00 | 4.00 |
| CO(µg/m³) | 715.00 | 856.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Angul averaged an AQI of 149 while Siwan averaged 148 — a 1-point (1%) gap, with Angul the more polluted and Siwan the cleaner of the two. On 263 days when both cities reported, Siwan was cleaner on 149 of them; the average daily gap was 73 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Angul logged 0% Severe days and 32.1% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Angul 23 days, Siwan 13 days.
Year-over-year progress
Angul has improved by 89 AQI points (37.4%) from 2023 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Angul reached AQI 370 at Hakimapada (OSPCB) on 2024-01-29; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Angul spans 1 CPCB stations with a 0-point spread (min 163, max 163); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Angul has better air quality with an AQI of 120 compared to Siwan's 260. That's a significant difference of 140 points.