Charkhi Dādri vs Siwan
Side-by-side air quality comparison between Charkhi Dādri and Siwan.
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 | Siwan |
|---|---|---|
| PM2.5(µg/m³) | 65.00 | 112.50 |
| PM10(µg/m³) | 178.80 | 127.60 |
| NO₂(µg/m³) | 15.00 | 56.00 |
| SO₂(µg/m³) | 9.50 | 14.90 |
| O₃(µg/m³) | 71.00 | 15.00 |
| CO(µg/m³) | 540.00 | 865.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Charkhi Dādri averaged an AQI of 145 while Siwan averaged 148 — a 3-point (2%) gap, with Siwan the more polluted and Charkhi Dādri the cleaner of the two. On 779 days when both cities reported, Charkhi Dādri was cleaner on 467 of them; the average daily gap was 80 AQI points.
Seasonality & days
Charkhi Dādri peaks in November, while Siwan peaks in January. Charkhi Dādri logged 0.7% Severe days and 28% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Charkhi Dādri 48 days, Siwan 13 days.
Year-over-year progress
Charkhi Dādri has improved by 51 AQI points (26%) from 2020 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Charkhi Dādri reached AQI 470 at Mini Secretariat Charkhi (HSPCB) on 2021-11-12; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Charkhi Dādri spans 1 CPCB stations with a 0-point spread (min 162, max 162); Siwan spans 1 stations with a 0-point spread (min 197, max 197).
Verdict
🏆 Charkhi Dādri has better air quality with an AQI of 153 compared to Siwan's 275. That's a significant difference of 122 points.