Arrah vs Delhi
Side-by-side air quality comparison between Arrah and Delhi.
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 | Arrah | Delhi |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 80.80 |
| PM10(µg/m³) | 117.10 | 143.90 |
| NO₂(µg/m³) | 42.70 | 41.80 |
| SO₂(µg/m³) | 15.30 | 33.00 |
| O₃(µg/m³) | 46.00 | 63.00 |
| CO(µg/m³) | 841.00 | 568.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Delhi averaged 210 — a 87-point (71%) gap, with Delhi the more polluted and Arrah the cleaner of the two. On 867 days when both cities reported, Arrah was cleaner on 830 of them; the average daily gap was 150 AQI points.
Seasonality & days
Arrah peaks in January, while Delhi peaks in November. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Delhi was 18.7% Severe and 1.7% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Delhi 3 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Delhi has improved by 42 AQI points (16.7%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Delhi hit AQI 500 at Ashok Vihar (DPCC) on 2024-11-18.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Delhi spans 39 stations with a 84-point spread (min 178, max 262).
Verdict
🏆 Delhi has better air quality with an AQI of 170 compared to Arrah's 244. That's a significant difference of 74 points.