Shillong vs Tirunelveli
Side-by-side air quality comparison between Shillong 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 | Shillong | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 20.40 | 4.30 |
| PM10(µg/m³) | 23.70 | 5.30 |
| NO₂(µg/m³) | 4.20 | 6.20 |
| SO₂(µg/m³) | 5.70 | 1.80 |
| O₃(µg/m³) | 99.00 | 26.00 |
| CO(µg/m³) | 305.00 | 139.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Shillong averaged an AQI of 75 while Tirunelveli averaged 30 — a 45-point (150%) gap, with Shillong the more polluted and Tirunelveli the cleaner of the two. On 40 days when both cities reported, Tirunelveli was cleaner on 30 of them; the average daily gap was 11 AQI points.
Seasonality & days
Shillong peaks in February, while Tirunelveli peaks in October. Shillong logged 0% Severe days and 92% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Shillong 113 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Shillong reached AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Shillong spans 2 CPCB stations with a 2-point spread (min 42, max 44); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).
Verdict
🏆 Tirunelveli has better air quality with an AQI of 7 compared to Shillong's 34.