Stay updated with real-time air quality in Wilmington, Delaware featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
58
Moderate
Wilmington, Delaware
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.92 μg/m³
0
55
155
255
425
605+
57.36 ppb
0
55
71
86
201
201+
0.21 ppb
0
36
76
186
605
1005+
9.40 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Wilmington, Delaware
Wilmington, Delaware
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AQI 64
Moderate
8.61μg/m³
PM2.5
32.96μg/m³
PM10
59.43ppb
O3
0.22ppb
SO2
9.81ppb
NO2
0.24ppm
CO
AQI 74
Moderate
9.19μg/m³
PM2.5
39.29μg/m³
PM10
62.08ppb
O3
0.28ppb
SO2
8.93ppb
NO2
0.24ppm
CO
AQI 77
Moderate
8.81μg/m³
PM2.5
38.06μg/m³
PM10
62.76ppb
O3
0.28ppb
SO2
10.38ppb
NO2
0.24ppm
CO
AQI 48
Good
8.06μg/m³
PM2.5
35.19μg/m³
PM10
52.28ppb
O3
0.38ppb
SO2
15.98ppb
NO2
0.24ppm
CO
AQI 64
Moderate
8.95μg/m³
PM2.5
37.63μg/m³
PM10
58.53ppb
O3
0.28ppb
SO2
12.69ppb
NO2
0.24ppm
CO
AQI 71
Moderate
8.77μg/m³
PM2.5
37.42μg/m³
PM10
60.53ppb
O3
0.25ppb
SO2
5.88ppb
NO2
0.24ppm
CO
Air quality data and pollutant measurements for Delaware, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Wilmington, Delaware is updated every hour.
The worst air quality in Wilmington, Delaware in the last 24 hours was observed at 02:00:00 on 2026-04-23.
In the last 24 hrs, the best air quality in Wilmington, Delaware was observed at 01:00:00 on 2026-04-23.
The current air quality in Wilmington, Delaware is 58, categorized as Moderate based on real-time data.
The most common pollutant in Wilmington, Delaware is O3.
If the air quality in Wilmington, Delaware is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Wilmington, Delaware is 8.034 μg/m3.
The current PM10 concentration at Wilmington, Delaware is 23.924 μg/m3.
The current carbon monoxide (CO) concentration at Wilmington, Delaware is 0.239 ppm.
The current sulfur dioxide (SO2) concentration at Wilmington, Delaware is 0.211 ppb.
The current ozone (O3) concentration at Wilmington, Delaware is 57.356 ppm.
The current nitrogen dioxide (NO2) concentration at Wilmington, Delaware is 9.397 ppb.
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