Dewās vs Vellore
Side-by-side air quality comparison between Dewās and Vellore.
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 | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 31.30 | 7.00 |
| PM10(µg/m³) | 47.80 | 8.40 |
| NO₂(µg/m³) | 7.10 | 8.50 |
| SO₂(µg/m³) | 15.10 | 4.30 |
| O₃(µg/m³) | 66.00 | 44.00 |
| CO(µg/m³) | 208.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dewās averaged an AQI of 98 while Vellore averaged 61 — a 37-point (61%) gap, with Dewās the more polluted and Vellore the cleaner of the two. On 273 days when both cities reported, Vellore was cleaner on 228 of them; the average daily gap was 48 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Dewās logged 0% Severe days and 47.7% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Dewās 101 days, Vellore 23 days.
Year-over-year progress
Dewās has improved by 48 AQI points (32.9%) from 2017 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Dewās reached AQI 327 at Bhopal Chauraha (MPPCB) on 2023-07-01; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Dewās spans 1 CPCB stations with a 0-point spread (min 106, max 106); Vellore spans 1 stations with a 0-point spread (min 70, max 70).
Verdict
🏆 Vellore has better air quality with an AQI of 12 compared to Dewās's 53.