Bhubaneswar vs Siwan
Side-by-side air quality comparison between Bhubaneswar 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 | Bhubaneswar | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 28.80 | 114.60 |
| PM10(µg/m³) | 32.60 | 125.70 |
| NO₂(µg/m³) | 11.40 | 44.50 |
| SO₂(µg/m³) | 10.00 | 15.40 |
| O₃(µg/m³) | 84.00 | 54.00 |
| CO(µg/m³) | 432.00 | 761.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhubaneswar averaged an AQI of 115 while Siwan averaged 148 — a 33-point (29%) gap, with Siwan the more polluted and Bhubaneswar the cleaner of the two. On 214 days when both cities reported, Bhubaneswar was cleaner on 128 of them; the average daily gap was 76 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Bhubaneswar logged 0% Severe days and 48.8% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Bhubaneswar 27 days, Siwan 13 days.
Year-over-year progress
The worst recorded day for Bhubaneswar reached AQI 341 at Lingraj Mandir (OSPCB) on 2024-01-09; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Bhubaneswar spans 2 CPCB stations with a 2-point spread (min 114, max 116); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Bhubaneswar has better air quality with an AQI of 48 compared to Siwan's 282. That's a significant difference of 234 points.