Charkhi Dādri vs Gangtok
Side-by-side air quality comparison between Charkhi Dādri and Gangtok.
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 | Charkhi Dādri | Gangtok |
|---|---|---|
| PM2.5(µg/m³) | 67.80 | 33.90 |
| PM10(µg/m³) | 219.30 | 43.50 |
| NO₂(µg/m³) | 11.50 | 5.10 |
| SO₂(µg/m³) | 9.90 | 2.80 |
| O₃(µg/m³) | 99.00 | 130.00 |
| CO(µg/m³) | 416.00 | 360.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Charkhi Dādri averaged an AQI of 145 while Gangtok averaged 48 — a 97-point (202%) gap, with Charkhi Dādri the more polluted and Gangtok the cleaner of the two. On 764 days when both cities reported, Gangtok was cleaner on 719 of them; the average daily gap was 103 AQI points.
Seasonality & days
Charkhi Dādri peaks in November, while Gangtok peaks in March. Charkhi Dādri logged 0.7% Severe days and 28% Good-or-Satisfactory days; Gangtok was 0% Severe and 96.2% Good-or-Satisfactory. Longest clean-air streaks: Charkhi Dādri 48 days, Gangtok 94 days.
Year-over-year progress
Charkhi Dādri has improved by 51 AQI points (26%) from 2020 to 2024; Gangtok has worsened by 14 AQI points (41.2%) over the same window. The worst recorded day for Charkhi Dādri reached AQI 470 at Mini Secretariat Charkhi (HSPCB) on 2021-11-12; Gangtok hit AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16.
Station-level disparity
Charkhi Dādri spans 1 CPCB stations with a 0-point spread (min 162, max 162); Gangtok spans 1 stations with a 0-point spread (min 50, max 50).
Verdict
🏆 Gangtok has better air quality with an AQI of 57 compared to Charkhi Dādri's 180. That's a significant difference of 123 points.