Samastipur vs Ulhasnagar
Side-by-side air quality comparison between Samastipur 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 | Samastipur | Ulhasnagar |
|---|---|---|
| PM2.5(µg/m³) | 118.70 | 23.70 |
| PM10(µg/m³) | 131.30 | 40.90 |
| NO₂(µg/m³) | 48.30 | 20.60 |
| SO₂(µg/m³) | 20.10 | 23.00 |
| O₃(µg/m³) | 57.00 | 23.00 |
| CO(µg/m³) | 732.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Samastipur averaged an AQI of 134 while Ulhasnagar averaged 117 — a 17-point (15%) gap, with Samastipur the more polluted and Ulhasnagar the cleaner of the two. On 388 days when both cities reported, Ulhasnagar was cleaner on 230 of them; the average daily gap was 54 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Samastipur logged 1.4% Severe days and 23.400000000000002% Good-or-Satisfactory days; Ulhasnagar was 0% Severe and 46.9% Good-or-Satisfactory. Longest clean-air streaks: Samastipur 9 days, Ulhasnagar 74 days.
Year-over-year progress
Samastipur has improved by 84 AQI points (38.5%) from 2022 to 2024; Ulhasnagar has improved by 10 AQI points (7.9%) over the same window. The worst recorded day for Samastipur reached AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01; Ulhasnagar hit AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13.
Station-level disparity
Samastipur spans 1 CPCB stations with a 0-point spread (min 177, max 177); Ulhasnagar spans 1 stations with a 0-point spread (min 120, max 120).
Verdict
🏆 Ulhasnagar has better air quality with an AQI of 41 compared to Samastipur's 296. That's a significant difference of 255 points.