Gangtok vs Sagar
Side-by-side air quality comparison between Gangtok and Sagar.
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 | Sagar |
|---|---|---|
| PM2.5(µg/m³) | 33.90 | 24.90 |
| PM10(µg/m³) | 43.50 | 41.00 |
| NO₂(µg/m³) | 5.10 | 11.80 |
| SO₂(µg/m³) | 2.80 | 4.10 |
| O₃(µg/m³) | 130.00 | 61.00 |
| CO(µg/m³) | 360.00 | 211.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Sagar averaged 96 — a 48-point (100%) gap, with Sagar the more polluted and Gangtok the cleaner of the two. On 435 days when both cities reported, Gangtok was cleaner on 412 of them; the average daily gap was 68 AQI points.
Seasonality & days
Gangtok peaks in March, while Sagar peaks in November. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Sagar was 0% Severe and 69.9% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Sagar 57 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Sagar has worsened by 24 AQI points (33.3%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Sagar hit AQI 347 at Civil Lines (MPPCB) on 2024-12-25.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Sagar spans 2 stations with a 45-point spread (min 73, max 118).
Verdict
🏆 Sagar has better air quality with an AQI of 42 compared to Gangtok's 57.