Asansol vs Chapra
Side-by-side air quality comparison between Asansol and Chapra.
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 | Chapra |
|---|---|---|
| PM2.5(µg/m³) | 89.60 | 99.00 |
| PM10(µg/m³) | 95.50 | 115.50 |
| NO₂(µg/m³) | 48.70 | 53.70 |
| SO₂(µg/m³) | 82.10 | 13.70 |
| O₃(µg/m³) | 39.00 | 10.00 |
| CO(µg/m³) | 708.00 | 858.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Chapra averaged 149 — a 4-point (3%) gap, with Chapra the more polluted and Asansol the cleaner of the two. On 611 days when both cities reported, Asansol was cleaner on 379 of them; the average daily gap was 74 AQI points.
Seasonality & days
Asansol peaks in December, while Chapra peaks in January. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Chapra was 2.4% Severe and 26.8% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Chapra 14 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Chapra has improved by 181 AQI points (54.8%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Chapra hit AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Chapra spans 1 stations with a 0-point spread (min 195, max 195).
Verdict
🏆 Asansol has better air quality with an AQI of 199 compared to Chapra's 231.