Gangtok vs Sasaram
Side-by-side air quality comparison between Gangtok and Sasaram.
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 | Sasaram |
|---|---|---|
| PM2.5(µg/m³) | 33.90 | 69.80 |
| PM10(µg/m³) | 43.50 | 80.30 |
| NO₂(µg/m³) | 5.10 | 15.10 |
| SO₂(µg/m³) | 2.80 | 14.40 |
| O₃(µg/m³) | 130.00 | 101.00 |
| CO(µg/m³) | 360.00 | 627.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Sasaram averaged 109 — a 61-point (127%) gap, with Sasaram the more polluted and Gangtok the cleaner of the two. On 625 days when both cities reported, Gangtok was cleaner on 561 of them; the average daily gap was 87 AQI points.
Seasonality & days
Gangtok peaks in March, while Sasaram peaks in January. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Sasaram was 0.1% Severe and 37% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Sasaram 27 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Sasaram has improved by 166 AQI points (60.4%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Sasaram hit AQI 401 at Dada Peer (BSPCB) on 2021-11-28.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Sasaram spans 1 stations with a 0-point spread (min 148, max 148).
Verdict
🏆 Gangtok has better air quality with an AQI of 57 compared to Sasaram's 133. That's a significant difference of 76 points.