Gangtok vs Tirunelveli
Side-by-side air quality comparison between Gangtok and Tirunelveli.
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 | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 30.30 | 2.00 |
| PM10(µg/m³) | 38.60 | 2.70 |
| NO₂(µg/m³) | 1.10 | 1.10 |
| SO₂(µg/m³) | 2.70 | 0.60 |
| O₃(µg/m³) | 150.00 | 52.00 |
| CO(µg/m³) | 264.00 | 101.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Tirunelveli averaged 30 — a 18-point (60%) gap, with Gangtok the more polluted and Tirunelveli the cleaner of the two. On 70 days when both cities reported, Tirunelveli was cleaner on 34 of them; the average daily gap was 11 AQI points.
Seasonality & days
Gangtok peaks in March, while Tirunelveli peaks in October. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).
Verdict
🏆 Tirunelveli has better air quality with an AQI of 3 compared to Gangtok's 51.