Arrah vs Ulhasnagar
Side-by-side air quality comparison between Arrah and Ulhasnagar.
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 | Ulhasnagar |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 22.10 |
| PM10(µg/m³) | 115.50 | 40.40 |
| NO₂(µg/m³) | 53.70 | 23.10 |
| SO₂(µg/m³) | 13.70 | 21.70 |
| O₃(µg/m³) | 10.00 | 19.00 |
| CO(µg/m³) | 944.00 | 208.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Ulhasnagar averaged 117 — a 6-point (5%) gap, with Arrah the more polluted and Ulhasnagar the cleaner of the two. On 358 days when both cities reported, Ulhasnagar was cleaner on 184 of them; the average daily gap was 61 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Ulhasnagar was 0% Severe and 46.9% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Ulhasnagar 74 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Ulhasnagar has improved by 10 AQI points (7.9%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Ulhasnagar hit AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Ulhasnagar spans 1 stations with a 0-point spread (min 120, max 120).
Verdict
🏆 Ulhasnagar has better air quality with an AQI of 40 compared to Arrah's 231. That's a significant difference of 191 points.