Asansol vs Saharsa
Side-by-side air quality comparison between Asansol and Saharsa.
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 | Asansol | Saharsa |
|---|---|---|
| PM2.5(µg/m³) | 91.00 | 99.90 |
| PM10(µg/m³) | 96.20 | 105.70 |
| NO₂(µg/m³) | 48.00 | 26.10 |
| SO₂(µg/m³) | 91.90 | 13.00 |
| O₃(µg/m³) | 58.00 | 62.00 |
| CO(µg/m³) | 838.00 | 670.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Saharsa averaged 139 — a 6-point (4%) gap, with Asansol the more polluted and Saharsa the cleaner of the two. On 572 days when both cities reported, Asansol was cleaner on 294 of them; the average daily gap was 75 AQI points.
Seasonality & days
Asansol peaks in December, while Saharsa peaks in January. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Saharsa was 1.4% Severe and 28.4% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Saharsa 20 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Saharsa has improved by 139 AQI points (50%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Saharsa hit AQI 454 at Police Line (BSPCB) on 2022-12-13.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Saharsa spans 1 stations with a 0-point spread (min 188, max 188).
Verdict
🏆 Asansol has better air quality with an AQI of 204 compared to Saharsa's 234.