Chandigarh vs Ulhasnagar
Side-by-side air quality comparison between Chandigarh 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 | Chandigarh | Ulhasnagar |
|---|---|---|
| PM2.5(µg/m³) | 49.00 | 22.10 |
| PM10(µg/m³) | 64.70 | 40.40 |
| NO₂(µg/m³) | 40.20 | 23.10 |
| SO₂(µg/m³) | 8.40 | 21.70 |
| O₃(µg/m³) | 23.00 | 19.00 |
| CO(µg/m³) | 678.00 | 208.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Ulhasnagar averaged 117 — a 36-point (31%) gap, with Chandigarh the more polluted and Ulhasnagar the cleaner of the two. On 509 days when both cities reported, Ulhasnagar was cleaner on 396 of them; the average daily gap was 64 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Ulhasnagar was 0% Severe and 46.9% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Ulhasnagar 74 days.
Year-over-year progress
Chandigarh has worsened by 27 AQI points (21.4%) from 2019 to 2024; Ulhasnagar has improved by 10 AQI points (7.9%) over the same window. The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Ulhasnagar hit AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); 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 Chandigarh's 82.