Gangtok vs Ooty
Side-by-side air quality comparison between Gangtok and Ooty.
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 | Ooty |
|---|---|---|
| PM2.5(µg/m³) | 36.20 | 4.40 |
| PM10(µg/m³) | 45.30 | 5.20 |
| NO₂(µg/m³) | 11.20 | 7.00 |
| SO₂(µg/m³) | 2.50 | 0.90 |
| O₃(µg/m³) | 101.00 | 31.00 |
| CO(µg/m³) | 522.00 | 124.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Ooty averaged 58 — a 10-point (21%) gap, with Ooty the more polluted and Gangtok the cleaner of the two. On 516 days when both cities reported, Gangtok was cleaner on 285 of them; the average daily gap was 26 AQI points.
Seasonality & days
Gangtok peaks in March, while Ooty peaks in May. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Ooty was 0% Severe and 94.2% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Ooty 22 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Ooty is essentially flat over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Ooty hit AQI 164 at Bombay Castel (TNPCB) on 2024-12-17.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Ooty spans 1 stations with a 0-point spread (min 59, max 59).
Verdict
🏆 Ooty has better air quality with an AQI of 7 compared to Gangtok's 61. That's a significant difference of 54 points.