Būndi vs Siwan
Side-by-side air quality comparison between Būndi 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 | Būndi | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 19.60 | 114.60 |
| PM10(µg/m³) | 30.30 | 125.70 |
| NO₂(µg/m³) | 5.70 | 44.50 |
| SO₂(µg/m³) | 4.00 | 15.40 |
| O₃(µg/m³) | 53.00 | 54.00 |
| CO(µg/m³) | 180.00 | 761.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Būndi averaged an AQI of 126 while Siwan averaged 148 — a 22-point (17%) gap, with Siwan the more polluted and Būndi the cleaner of the two. On 384 days when both cities reported, Būndi was cleaner on 218 of them; the average daily gap was 58 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Būndi logged 0% Severe days and 31% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Būndi 23 days, Siwan 13 days.
Year-over-year progress
Būndi has improved by 18 AQI points (12.5%) from 2023 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Būndi reached AQI 353 at New Colony (RSPCB) on 2023-12-25; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Būndi spans 1 CPCB stations with a 0-point spread (min 133, max 133); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Būndi has better air quality with an AQI of 33 compared to Siwan's 282. That's a significant difference of 249 points.