Dewās vs Perundurai
Side-by-side air quality comparison between Dewās and Perundurai.
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 | Perundurai |
|---|---|---|
| PM2.5(µg/m³) | 31.30 | 9.20 |
| PM10(µg/m³) | 47.80 | 10.30 |
| NO₂(µg/m³) | 7.10 | 10.50 |
| SO₂(µg/m³) | 15.10 | 3.60 |
| O₃(µg/m³) | 66.00 | 35.00 |
| CO(µg/m³) | 208.00 | 172.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dewās averaged an AQI of 98 while Perundurai averaged 75 — a 23-point (31%) gap, with Dewās the more polluted and Perundurai the cleaner of the two. On 55 days when both cities reported, Perundurai was cleaner on 48 of them; the average daily gap was 81 AQI points.
Seasonality & days
Dewās peaks in December, while Perundurai peaks in November. Dewās logged 0% Severe days and 47.7% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Dewās 101 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Dewās reached AQI 327 at Bhopal Chauraha (MPPCB) on 2023-07-01; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Dewās spans 1 CPCB stations with a 0-point spread (min 106, max 106); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).
Verdict
🏆 Perundurai has better air quality with an AQI of 15 compared to Dewās's 53.