Ambala vs Ulhasnagar
Side-by-side air quality comparison between Ambala 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 | Ambala | Ulhasnagar |
|---|---|---|
| PM2.5(µg/m³) | 47.60 | 22.10 |
| PM10(µg/m³) | 70.10 | 40.40 |
| NO₂(µg/m³) | 23.90 | 23.10 |
| SO₂(µg/m³) | 10.30 | 21.70 |
| O₃(µg/m³) | 56.00 | 19.00 |
| CO(µg/m³) | 618.00 | 208.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ambala averaged an AQI of 94 while Ulhasnagar averaged 117 — a 23-point (24%) gap, with Ulhasnagar the more polluted and Ambala the cleaner of the two. On 458 days when both cities reported, Ambala was cleaner on 263 of them; the average daily gap was 46 AQI points.
Seasonality & days
Ambala peaks in November, while Ulhasnagar peaks in January. Ambala logged 0.2% Severe days and 46.5% Good-or-Satisfactory days; Ulhasnagar was 0% Severe and 46.9% Good-or-Satisfactory. Longest clean-air streaks: Ambala 44 days, Ulhasnagar 74 days.
Year-over-year progress
Ambala has improved by 52 AQI points (35.6%) from 2019 to 2024; Ulhasnagar has improved by 10 AQI points (7.9%) over the same window. The worst recorded day for Ambala reached AQI 452 at Patti Mehar (HSPCB) on 2020-11-04; Ulhasnagar hit AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13.
Station-level disparity
Ambala spans 1 CPCB stations with a 0-point spread (min 126, max 126); 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 Ambala's 80.