Nayāgarh vs Siwan
Side-by-side air quality comparison between Nayāgarh 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 | Nayāgarh | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 52.40 | 112.50 |
| PM10(µg/m³) | 56.50 | 127.60 |
| NO₂(µg/m³) | 13.90 | 56.00 |
| SO₂(µg/m³) | 6.90 | 14.90 |
| O₃(µg/m³) | 59.00 | 15.00 |
| CO(µg/m³) | 464.00 | 865.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nayāgarh averaged an AQI of 98 while Siwan averaged 148 — a 50-point (51%) gap, with Siwan the more polluted and Nayāgarh the cleaner of the two. On 491 days when both cities reported, Nayāgarh was cleaner on 376 of them; the average daily gap was 85 AQI points.
Seasonality & days
Nayāgarh peaks in April, while Siwan peaks in January. Nayāgarh logged 0% Severe days and 47.400000000000006% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Nayāgarh 52 days, Siwan 13 days.
Year-over-year progress
Nayāgarh has improved by 48 AQI points (32.9%) from 2022 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Nayāgarh reached AQI 336 at Dabuna (OSPCB) on 2023-03-13; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Nayāgarh spans 1 CPCB stations with a 0-point spread (min 116, max 116); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Nayāgarh has better air quality with an AQI of 88 compared to Siwan's 275. That's a significant difference of 187 points.