Alwar vs Samastipur
Side-by-side air quality comparison between Alwar and Samastipur.
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 | Alwar | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 58.70 | 118.70 |
| PM10(µg/m³) | 158.30 | 131.30 |
| NO₂(µg/m³) | 14.30 | 48.30 |
| SO₂(µg/m³) | 8.50 | 20.10 |
| O₃(µg/m³) | 76.00 | 57.00 |
| CO(µg/m³) | 357.00 | 732.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Samastipur averaged 134 — a 46-point (52%) gap, with Samastipur the more polluted and Alwar the cleaner of the two. On 783 days when both cities reported, Alwar was cleaner on 682 of them; the average daily gap was 92 AQI points.
Seasonality & days
Alwar peaks in November, while Samastipur peaks in January. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Samastipur 9 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Alwar has better air quality with an AQI of 139 compared to Samastipur's 296. That's a significant difference of 157 points.