Asansol vs Howrah
Side-by-side air quality comparison between Asansol and Howrah.
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 | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 89.60 | 68.70 |
| PM10(µg/m³) | 95.50 | 72.60 |
| NO₂(µg/m³) | 48.70 | 22.20 |
| SO₂(µg/m³) | 82.10 | 11.50 |
| O₃(µg/m³) | 39.00 | 55.00 |
| CO(µg/m³) | 708.00 | 360.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Howrah averaged 126 — a 19-point (15%) gap, with Asansol the more polluted and Howrah the cleaner of the two. On 1969 days when both cities reported, Asansol was cleaner on 1168 of them; the average daily gap was 53 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Howrah 120 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Howrah has better air quality with an AQI of 130 compared to Asansol's 199. That's a significant difference of 69 points.