Alwar vs Dehradun
Side-by-side air quality comparison between Alwar and Dehradun.
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 | Alwar | Dehradun |
|---|---|---|
| PM2.5(µg/m³) | 58.40 | 20.80 |
| PM10(µg/m³) | 169.00 | 20.80 |
| NO₂(µg/m³) | 17.10 | 41.40 |
| SO₂(µg/m³) | 7.70 | 3.80 |
| O₃(µg/m³) | 58.00 | 25.00 |
| CO(µg/m³) | 391.00 | 395.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Dehradun averaged 106 — a 18-point (20%) gap, with Dehradun the more polluted and Alwar the cleaner of the two. On 787 days when both cities reported, Alwar was cleaner on 423 of them; the average daily gap was 38 AQI points.
Seasonality & days
Alwar peaks in November, while Dehradun peaks in January. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Dehradun was 0% Severe and 62.8% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Dehradun 41 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Dehradun has worsened by 19 AQI points (21.8%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Dehradun hit AQI 327 at Doon University (UKPCB) on 2024-01-19.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); Dehradun spans 1 stations with a 0-point spread (min 98, max 98).
Verdict
🏆 Dehradun has better air quality with an AQI of 35 compared to Alwar's 147. That's a significant difference of 112 points.