Asansol vs Siliguri
Side-by-side air quality comparison between Asansol and Siliguri.
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 | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 94.30 | 85.20 |
| PM10(µg/m³) | 100.60 | 107.60 |
| NO₂(µg/m³) | 49.40 | 14.20 |
| SO₂(µg/m³) | 84.00 | 6.70 |
| O₃(µg/m³) | 41.00 | 98.00 |
| CO(µg/m³) | 775.00 | 546.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Siliguri averaged 81 — a 64-point (79%) gap, with Asansol the more polluted and Siliguri the cleaner of the two. On 1763 days when both cities reported, Siliguri was cleaner on 1275 of them; the average daily gap was 59 AQI points.
Seasonality & days
Asansol peaks in December, while Siliguri peaks in February. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Siliguri 180 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Siliguri has better air quality with an AQI of 184 compared to Asansol's 215.