Chittoor vs Dehradun
Side-by-side air quality comparison between Chittoor 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 | Chittoor | Dehradun |
|---|---|---|
| PM2.5(µg/m³) | 6.10 | 14.40 |
| PM10(µg/m³) | 7.70 | 14.60 |
| NO₂(µg/m³) | 7.30 | 25.40 |
| SO₂(µg/m³) | 3.10 | 4.10 |
| O₃(µg/m³) | 47.00 | 71.00 |
| CO(µg/m³) | 212.00 | 350.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chittoor averaged an AQI of 76 while Dehradun averaged 106 — a 30-point (39%) gap, with Dehradun the more polluted and Chittoor the cleaner of the two. On 487 days when both cities reported, Chittoor was cleaner on 327 of them; the average daily gap was 52 AQI points.
Seasonality & days
Chittoor peaks in October, while Dehradun peaks in January. Chittoor logged 0% Severe days and 84.9% Good-or-Satisfactory days; Dehradun was 0% Severe and 62.8% Good-or-Satisfactory. Longest clean-air streaks: Chittoor 37 days, Dehradun 41 days.
Year-over-year progress
Chittoor has worsened by 5 AQI points (7%) from 2022 to 2024; Dehradun has worsened by 19 AQI points (21.8%) over the same window. The worst recorded day for Chittoor reached AQI 348 at Gangineni Cheruvu (APPCB) on 2023-11-13; Dehradun hit AQI 327 at Doon University (UKPCB) on 2024-01-19.
Station-level disparity
Chittoor spans 1 CPCB stations with a 0-point spread (min 72, max 72); Dehradun spans 1 stations with a 0-point spread (min 98, max 98).
Verdict
🏆 Chittoor has better air quality with an AQI of 10 compared to Dehradun's 24.