Gangtok vs Samastipur
Side-by-side air quality comparison between Gangtok and Samastipur.
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 | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 36.20 | 118.00 |
| PM10(µg/m³) | 45.30 | 134.60 |
| NO₂(µg/m³) | 11.20 | 61.60 |
| SO₂(µg/m³) | 2.50 | 18.30 |
| O₃(µg/m³) | 101.00 | 5.00 |
| CO(µg/m³) | 522.00 | 837.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Samastipur averaged 134 — a 86-point (179%) gap, with Samastipur the more polluted and Gangtok the cleaner of the two. On 626 days when both cities reported, Gangtok was cleaner on 597 of them; the average daily gap was 128 AQI points.
Seasonality & days
Gangtok peaks in March, while Samastipur peaks in January. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Samastipur 9 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Gangtok has better air quality with an AQI of 61 compared to Samastipur's 293. That's a significant difference of 232 points.