Delhi vs Ulhasnagar
Side-by-side air quality comparison between Delhi 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 | Delhi | Ulhasnagar |
|---|---|---|
| PM2.5(µg/m³) | 80.80 | 23.70 |
| PM10(µg/m³) | 143.90 | 40.90 |
| NO₂(µg/m³) | 41.80 | 20.60 |
| SO₂(µg/m³) | 33.00 | 23.00 |
| O₃(µg/m³) | 63.00 | 23.00 |
| CO(µg/m³) | 568.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Delhi averaged an AQI of 210 while Ulhasnagar averaged 117 — a 93-point (79%) gap, with Delhi the more polluted and Ulhasnagar the cleaner of the two. On 509 days when both cities reported, Ulhasnagar was cleaner on 504 of them; the average daily gap was 182 AQI points.
Seasonality & days
Delhi peaks in November, while Ulhasnagar peaks in January. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Ulhasnagar was 0% Severe and 46.9% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Ulhasnagar 74 days.
Year-over-year progress
Delhi has improved by 42 AQI points (16.7%) from 2016 to 2024; Ulhasnagar has improved by 10 AQI points (7.9%) over the same window. The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Ulhasnagar hit AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); 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 Delhi's 170. That's a significant difference of 129 points.