Dewās vs Silchar
Side-by-side air quality comparison between Dewās and Silchar.
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 | Silchar |
|---|---|---|
| PM2.5(µg/m³) | 32.60 | 53.70 |
| PM10(µg/m³) | 47.00 | 64.50 |
| NO₂(µg/m³) | 6.50 | 14.10 |
| SO₂(µg/m³) | 12.50 | 7.40 |
| O₃(µg/m³) | 74.00 | 94.00 |
| CO(µg/m³) | 243.00 | 289.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dewās averaged an AQI of 98 while Silchar averaged 52 — a 46-point (88%) gap, with Dewās the more polluted and Silchar the cleaner of the two. On 617 days when both cities reported, Silchar was cleaner on 550 of them; the average daily gap was 57 AQI points.
Seasonality & days
Dewās peaks in December, while Silchar peaks in February. Dewās logged 0% Severe days and 47.7% Good-or-Satisfactory days; Silchar was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Dewās 101 days, Silchar 87 days.
Year-over-year progress
Dewās has improved by 48 AQI points (32.9%) from 2017 to 2024; Silchar has worsened by 11 AQI points (26.8%) over the same window. The worst recorded day for Dewās reached AQI 327 at Bhopal Chauraha (MPPCB) on 2023-07-01; Silchar hit AQI 89 at Tarapur (PCBA) on 2023-04-29.
Station-level disparity
Dewās spans 1 CPCB stations with a 0-point spread (min 106, max 106); Silchar spans 1 stations with a 0-point spread (min 47, max 47).
Verdict
🏆 Dewās has better air quality with an AQI of 55 compared to Silchar's 90.