Alwar vs Arrah
Side-by-side air quality comparison between Alwar and Arrah.
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 | Arrah |
|---|---|---|
| PM2.5(µg/m³) | 58.70 | 102.90 |
| PM10(µg/m³) | 158.30 | 117.10 |
| NO₂(µg/m³) | 14.30 | 42.70 |
| SO₂(µg/m³) | 8.50 | 15.30 |
| O₃(µg/m³) | 76.00 | 46.00 |
| CO(µg/m³) | 357.00 | 841.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Arrah averaged 123 — a 35-point (40%) gap, with Arrah the more polluted and Alwar the cleaner of the two. On 855 days when both cities reported, Alwar was cleaner on 686 of them; the average daily gap was 80 AQI points.
Seasonality & days
Alwar peaks in November, while Arrah peaks in January. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Arrah was 0.2% Severe and 32.3% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Arrah 11 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Arrah has improved by 175 AQI points (58.7%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Arrah hit AQI 420 at New DM Office (BSPCB) on 2021-12-21.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); Arrah spans 1 stations with a 0-point spread (min 162, max 162).
Verdict
🏆 Alwar has better air quality with an AQI of 139 compared to Arrah's 244. That's a significant difference of 105 points.