Munger vs Siwan
Side-by-side air quality comparison between Munger 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 | Munger | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 61.20 | 114.60 |
| PM10(µg/m³) | 67.50 | 125.70 |
| NO₂(µg/m³) | 28.20 | 44.50 |
| SO₂(µg/m³) | 17.40 | 15.40 |
| O₃(µg/m³) | 71.00 | 54.00 |
| CO(µg/m³) | 516.00 | 761.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Munger averaged an AQI of 130 while Siwan averaged 148 — a 18-point (14%) gap, with Siwan the more polluted and Munger the cleaner of the two. On 684 days when both cities reported, Munger was cleaner on 355 of them; the average daily gap was 60 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Munger logged 1.5% Severe days and 22.9% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Munger 12 days, Siwan 13 days.
Year-over-year progress
Munger has improved by 135 AQI points (50.9%) from 2021 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Munger reached AQI 445 at Town Hall (BSPCB) on 2022-01-06; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Munger spans 1 CPCB stations with a 0-point spread (min 180, max 180); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Munger has better air quality with an AQI of 105 compared to Siwan's 282. That's a significant difference of 177 points.