Gangtok vs Guwahati
Side-by-side air quality comparison between Gangtok and Guwahati.
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 | Guwahati |
|---|---|---|
| PM2.5(µg/m³) | 36.20 | 33.80 |
| PM10(µg/m³) | 45.30 | 37.10 |
| NO₂(µg/m³) | 11.20 | 6.60 |
| SO₂(µg/m³) | 2.50 | 4.00 |
| O₃(µg/m³) | 101.00 | 81.00 |
| CO(µg/m³) | 522.00 | 397.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Guwahati averaged 123 — a 75-point (156%) gap, with Guwahati the more polluted and Gangtok the cleaner of the two. On 783 days when both cities reported, Gangtok was cleaner on 750 of them; the average daily gap was 98 AQI points.
Seasonality & days
Gangtok peaks in March, while Guwahati peaks in January. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Guwahati was 0.1% Severe and 44.9% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Guwahati 105 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Guwahati has worsened by 14 AQI points (12.8%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Guwahati hit AQI 420 at Railway Colony (PCBA) on 2023-01-15.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Guwahati spans 4 stations with a 26-point spread (min 118, max 144).
Verdict
🏆 Guwahati has better air quality with an AQI of 57 compared to Gangtok's 61.