Bulandshahr vs Ulhasnagar
Side-by-side air quality comparison between Bulandshahr 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 | Bulandshahr | Ulhasnagar |
|---|---|---|
| PM2.5(µg/m³) | 71.70 | 23.70 |
| PM10(µg/m³) | 108.50 | 40.90 |
| NO₂(µg/m³) | 30.30 | 20.60 |
| SO₂(µg/m³) | 10.30 | 23.00 |
| O₃(µg/m³) | 60.00 | 23.00 |
| CO(µg/m³) | 488.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bulandshahr averaged an AQI of 142 while Ulhasnagar averaged 117 — a 25-point (21%) gap, with Bulandshahr the more polluted and Ulhasnagar the cleaner of the two. On 501 days when both cities reported, Ulhasnagar was cleaner on 341 of them; the average daily gap was 50 AQI points.
Seasonality & days
Bulandshahr peaks in November, while Ulhasnagar peaks in January. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Ulhasnagar was 0% Severe and 46.9% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Ulhasnagar 74 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Ulhasnagar has improved by 10 AQI points (7.9%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Ulhasnagar hit AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); 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 Bulandshahr's 140. That's a significant difference of 99 points.