Charkhi Dādri vs Patna
Side-by-side air quality comparison between Charkhi Dādri and Patna.
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 | Charkhi Dādri | Patna |
|---|---|---|
| PM2.5(µg/m³) | 67.50 | 99.00 |
| PM10(µg/m³) | 175.10 | 111.80 |
| NO₂(µg/m³) | 19.80 | 49.30 |
| SO₂(µg/m³) | 10.70 | 18.10 |
| O₃(µg/m³) | 65.00 | 19.00 |
| CO(µg/m³) | 544.00 | 704.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Charkhi Dādri averaged an AQI of 145 while Patna averaged 172 — a 27-point (19%) gap, with Patna the more polluted and Charkhi Dādri the cleaner of the two. On 1521 days when both cities reported, Charkhi Dādri was cleaner on 1182 of them; the average daily gap was 99 AQI points.
Seasonality & days
Charkhi Dādri peaks in November, while Patna peaks in December. Charkhi Dādri logged 0.7% Severe days and 28% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Charkhi Dādri 48 days, Patna 30 days.
Year-over-year progress
Charkhi Dādri has improved by 51 AQI points (26%) from 2020 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Charkhi Dādri reached AQI 470 at Mini Secretariat Charkhi (HSPCB) on 2021-11-12; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Charkhi Dādri spans 1 CPCB stations with a 0-point spread (min 162, max 162); Patna spans 6 stations with a 39-point spread (min 154, max 193).
Verdict
🏆 Charkhi Dādri has better air quality with an AQI of 151 compared to Patna's 231. That's a significant difference of 80 points.