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)
25
Good
Wilmington, Delaware
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.42 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.22 μg/m³
0
55
155
255
425
605+
27.00 ppb
0
55
71
86
201
201+
0.11 ppb
0
36
76
186
605
1005+
8.93 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Wilmington, Delaware
Wilmington, Delaware
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AQI 28
Good
2.51μg/m³
PM2.5
9.41μg/m³
PM10
29.98ppb
O3
0.21ppb
SO2
8.40ppb
NO2
0.23ppm
CO
AQI 31
Good
2.77μg/m³
PM2.5
11.46μg/m³
PM10
34.16ppb
O3
0.28ppb
SO2
7.73ppb
NO2
0.22ppm
CO
AQI 31
Good
2.62μg/m³
PM2.5
10.88μg/m³
PM10
34.42ppb
O3
0.28ppb
SO2
7.87ppb
NO2
0.22ppm
CO
AQI 31
Good
2.50μg/m³
PM2.5
10.42μg/m³
PM10
34.06ppb
O3
0.25ppb
SO2
8.80ppb
NO2
0.25ppm
CO
AQI 30
Good
2.52μg/m³
PM2.5
9.85μg/m³
PM10
32.28ppb
O3
0.19ppb
SO2
8.57ppb
NO2
0.24ppm
CO
AQI 31
Good
2.72μg/m³
PM2.5
10.99μg/m³
PM10
33.75ppb
O3
0.30ppb
SO2
7.79ppb
NO2
0.22ppm
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 04:00:00 on 2026-10-22.
In the last 24 hrs, the best air quality in Wilmington, Delaware was observed at 01:00:00 on 2026-10-22.
The current air quality in Wilmington, Delaware is 25, categorized as Good 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 2.416 μg/m3.
The current PM10 concentration at Wilmington, Delaware is 9.224 μg/m3.
The current carbon monoxide (CO) concentration at Wilmington, Delaware is 0.23 ppm.
The current sulfur dioxide (SO2) concentration at Wilmington, Delaware is 0.107 ppb.
The current ozone (O3) concentration at Wilmington, Delaware is 26.999 ppm.
The current nitrogen dioxide (NO2) concentration at Wilmington, Delaware is 8.925 ppb.
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