Nagpur vs Siwan
Side-by-side air quality comparison between Nagpur 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 | Nagpur | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 22.20 | 97.60 |
| PM10(µg/m³) | 31.90 | 111.10 |
| NO₂(µg/m³) | 16.70 | 29.20 |
| SO₂(µg/m³) | 18.30 | 15.80 |
| O₃(µg/m³) | 75.00 | 108.00 |
| CO(µg/m³) | 200.00 | 601.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nagpur averaged an AQI of 104 while Siwan averaged 148 — a 44-point (42%) gap, with Siwan the more polluted and Nagpur the cleaner of the two. On 473 days when both cities reported, Nagpur was cleaner on 353 of them; the average daily gap was 98 AQI points.
Seasonality & days
Nagpur peaks in November, while Siwan peaks in January. Nagpur logged 0% Severe days and 60.599999999999994% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Nagpur 68 days, Siwan 13 days.
Year-over-year progress
Nagpur has improved by 37 AQI points (26.2%) from 2017 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Nagpur reached AQI 342 at Opp GPO Civil Lines (MPCB) on 2022-12-03; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Nagpur spans 4 CPCB stations with a 9-point spread (min 98, max 107); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Nagpur has better air quality with an AQI of 37 compared to Siwan's 226. That's a significant difference of 189 points.