Arrah vs Asansol
Side-by-side air quality comparison between Arrah and Asansol.
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 | Arrah | Asansol |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 91.00 |
| PM10(µg/m³) | 117.10 | 96.20 |
| NO₂(µg/m³) | 42.70 | 48.00 |
| SO₂(µg/m³) | 15.30 | 91.90 |
| O₃(µg/m³) | 46.00 | 58.00 |
| CO(µg/m³) | 841.00 | 838.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Asansol averaged 145 — a 22-point (18%) gap, with Asansol the more polluted and Arrah the cleaner of the two. On 530 days when both cities reported, Arrah was cleaner on 297 of them; the average daily gap was 66 AQI points.
Seasonality & days
Arrah peaks in January, while Asansol peaks in December. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Asansol was 0% Severe and 43.3% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Asansol 44 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Asansol has worsened by 12 AQI points (9%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Asansol hit AQI 394 at Court Area (WBPCB) on 2022-12-13.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Asansol spans 4 stations with a 40-point spread (min 123, max 163).
Verdict
🏆 Asansol has better air quality with an AQI of 204 compared to Arrah's 244.