Asansol vs Gangtok
Side-by-side air quality comparison between Asansol and Gangtok.
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 | Gangtok |
|---|---|---|
| PM2.5(µg/m³) | 89.60 | 36.20 |
| PM10(µg/m³) | 95.50 | 45.30 |
| NO₂(µg/m³) | 48.70 | 11.20 |
| SO₂(µg/m³) | 82.10 | 2.50 |
| O₃(µg/m³) | 39.00 | 101.00 |
| CO(µg/m³) | 708.00 | 522.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Gangtok averaged 48 — a 97-point (202%) gap, with Asansol the more polluted and Gangtok the cleaner of the two. On 452 days when both cities reported, Gangtok was cleaner on 450 of them; the average daily gap was 120 AQI points.
Seasonality & days
Asansol peaks in December, while Gangtok peaks in March. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Gangtok was 0% Severe and 96.2% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Gangtok 94 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Gangtok has worsened by 14 AQI points (41.2%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Gangtok hit AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Gangtok spans 1 stations with a 0-point spread (min 50, max 50).
Verdict
🏆 Gangtok has better air quality with an AQI of 61 compared to Asansol's 199. That's a significant difference of 138 points.