Gangtok vs Kalyān
Side-by-side air quality comparison between Gangtok and Kalyān.
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 | Gangtok | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 35.70 | 23.70 |
| PM10(µg/m³) | 45.20 | 40.90 |
| NO₂(µg/m³) | 8.70 | 20.60 |
| SO₂(µg/m³) | 2.60 | 23.00 |
| O₃(µg/m³) | 112.00 | 23.00 |
| CO(µg/m³) | 461.00 | 186.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Kalyān averaged 95 — a 47-point (98%) gap, with Kalyān the more polluted and Gangtok the cleaner of the two. On 431 days when both cities reported, Gangtok was cleaner on 423 of them; the average daily gap was 67 AQI points.
Seasonality & days
Gangtok peaks in March, while Kalyān peaks in January. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Kalyān 78 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Kalyān has improved by 4 AQI points (4%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Kalyān spans 2 stations with a 18-point spread (min 98, max 116).
Verdict
🏆 Kalyān has better air quality with an AQI of 41 compared to Gangtok's 60.