Bihar Sharif vs Dehradun
Side-by-side air quality comparison between Bihar Sharif 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 | Bihar Sharif | Dehradun |
|---|---|---|
| PM2.5(µg/m³) | 71.90 | 14.40 |
| PM10(µg/m³) | 79.40 | 14.60 |
| NO₂(µg/m³) | 27.20 | 25.40 |
| SO₂(µg/m³) | 14.60 | 4.10 |
| O₃(µg/m³) | 64.00 | 71.00 |
| CO(µg/m³) | 543.00 | 350.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bihar Sharif averaged an AQI of 115 while Dehradun averaged 106 — a 9-point (8%) gap, with Bihar Sharif the more polluted and Dehradun the cleaner of the two. On 644 days when both cities reported, Dehradun was cleaner on 414 of them; the average daily gap was 63 AQI points.
Seasonality & days
Bihar Sharif peaks in December, while Dehradun peaks in January. Bihar Sharif logged 1% Severe days and 39.1% Good-or-Satisfactory days; Dehradun was 0% Severe and 62.8% Good-or-Satisfactory. Longest clean-air streaks: Bihar Sharif 32 days, Dehradun 41 days.
Year-over-year progress
Bihar Sharif has improved by 138 AQI points (54.5%) from 2021 to 2024; Dehradun has worsened by 19 AQI points (21.8%) over the same window. The worst recorded day for Bihar Sharif reached AQI 433 at D M Colony Bihar (BSPCB) on 2021-12-24; Dehradun hit AQI 327 at Doon University (UKPCB) on 2024-01-19.
Station-level disparity
Bihar Sharif spans 1 CPCB stations with a 0-point spread (min 146, max 146); Dehradun spans 1 stations with a 0-point spread (min 98, max 98).
Verdict
🏆 Dehradun has better air quality with an AQI of 24 compared to Bihar Sharif's 140. That's a significant difference of 116 points.