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)
28
Good
Wilmington, Delaware
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
7.00 μg/m³
0
55
155
255
425
605+
29.60 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
4.22 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Wilmington, Delaware
Wilmington, Delaware
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AQI 29
Good
3.76μg/m³
PM2.5
13.28μg/m³
PM10
30.76ppb
O3
0.58ppb
SO2
2.84ppb
NO2
0.21ppm
CO
AQI 28
Good
3.98μg/m³
PM2.5
15.67μg/m³
PM10
29.68ppb
O3
0.47ppb
SO2
2.42ppb
NO2
0.21ppm
CO
AQI 28
Good
3.89μg/m³
PM2.5
15.51μg/m³
PM10
29.87ppb
O3
0.50ppb
SO2
2.42ppb
NO2
0.21ppm
CO
AQI 27
Good
3.62μg/m³
PM2.5
16.18μg/m³
PM10
29.02ppb
O3
0.71ppb
SO2
2.88ppb
NO2
0.22ppm
CO
AQI 28
Good
3.70μg/m³
PM2.5
13.28μg/m³
PM10
30.13ppb
O3
0.64ppb
SO2
2.87ppb
NO2
0.22ppm
CO
AQI 28
Good
3.77μg/m³
PM2.5
16.02μg/m³
PM10
30.37ppb
O3
0.33ppb
SO2
2.54ppb
NO2
0.21ppm
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 09:00:00 on 2026-06-07.
In the last 24 hrs, the best air quality in Wilmington, Delaware was observed at 08:00:00 on 2026-06-08.
The current air quality in Wilmington, Delaware is 30, 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 3.625 μg/m3.
The current PM10 concentration at Wilmington, Delaware is 8.017 μg/m3.
The current carbon monoxide (CO) concentration at Wilmington, Delaware is 0.215 ppm.
The current sulfur dioxide (SO2) concentration at Wilmington, Delaware is 0.596 ppb.
The current ozone (O3) concentration at Wilmington, Delaware is 31.819 ppm.
The current nitrogen dioxide (NO2) concentration at Wilmington, Delaware is 2.856 ppb.
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