Dewās vs Tirunelveli
Side-by-side air quality comparison between Dewās 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 | Dewās | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 32.60 | 4.30 |
| PM10(µg/m³) | 47.00 | 5.30 |
| NO₂(µg/m³) | 6.50 | 6.20 |
| SO₂(µg/m³) | 12.50 | 1.80 |
| O₃(µg/m³) | 74.00 | 26.00 |
| CO(µg/m³) | 243.00 | 139.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dewās averaged an AQI of 98 while Tirunelveli averaged 30 — a 68-point (227%) gap, with Dewās the more polluted and Tirunelveli the cleaner of the two. On 104 days when both cities reported, Tirunelveli was cleaner on 104 of them; the average daily gap was 86 AQI points.
Seasonality & days
Dewās peaks in December, while Tirunelveli peaks in October. Dewās logged 0% Severe days and 47.7% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Dewās 101 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Dewās reached AQI 327 at Bhopal Chauraha (MPPCB) on 2023-07-01; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Dewās spans 1 CPCB stations with a 0-point spread (min 106, max 106); 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 Dewās's 55.