Belgaum vs Siwan
Side-by-side air quality comparison between Belgaum 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 | Belgaum | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 11.10 | 114.60 |
| PM10(µg/m³) | 19.90 | 125.70 |
| NO₂(µg/m³) | 6.70 | 44.50 |
| SO₂(µg/m³) | 1.40 | 15.40 |
| O₃(µg/m³) | 38.00 | 54.00 |
| CO(µg/m³) | 113.00 | 761.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Belgaum averaged an AQI of 58 while Siwan averaged 148 — a 90-point (155%) gap, with Siwan the more polluted and Belgaum the cleaner of the two. On 565 days when both cities reported, Belgaum was cleaner on 546 of them; the average daily gap was 118 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Belgaum logged 0% Severe days and 84.3% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Belgaum 71 days, Siwan 13 days.
Year-over-year progress
Belgaum has improved by 33 AQI points (36.3%) from 2022 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Belgaum reached AQI 248 at Ramteerth Nagar (KSPCB) on 2024-12-14; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Belgaum spans 1 CPCB stations with a 0-point spread (min 71, max 71); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Belgaum has better air quality with an AQI of 20 compared to Siwan's 282. That's a significant difference of 262 points.