Gangtok vs Silchar
Side-by-side air quality comparison between Gangtok and Silchar.
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 | Silchar |
|---|---|---|
| PM2.5(µg/m³) | 35.70 | 53.00 |
| PM10(µg/m³) | 45.20 | 63.80 |
| NO₂(µg/m³) | 8.70 | 13.90 |
| SO₂(µg/m³) | 2.60 | 7.50 |
| O₃(µg/m³) | 112.00 | 95.00 |
| CO(µg/m³) | 461.00 | 276.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Silchar averaged 52 — a 4-point (8%) gap, with Silchar the more polluted and Gangtok the cleaner of the two. On 570 days when both cities reported, Silchar was cleaner on 381 of them; the average daily gap was 22 AQI points.
Seasonality & days
Gangtok peaks in March, while Silchar peaks in February. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Silchar was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Silchar 87 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Silchar has worsened by 11 AQI points (26.8%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Silchar hit AQI 89 at Tarapur (PCBA) on 2023-04-29.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Silchar spans 1 stations with a 0-point spread (min 47, max 47).
Verdict
🏆 Gangtok has better air quality with an AQI of 60 compared to Silchar's 89.