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)
42
Good
Wilmington, Delaware
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.67 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.83 μg/m³
0
55
155
255
425
605+
45.07 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
2.75 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Wilmington, Delaware
Wilmington, Delaware
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AQI 43
Good
3.52μg/m³
PM2.5
13.57μg/m³
PM10
46.21ppb
O3
0.22ppb
SO2
2.75ppb
NO2
0.23ppm
CO
AQI 44
Good
3.32μg/m³
PM2.5
13.59μg/m³
PM10
47.23ppb
O3
0.23ppb
SO2
2.63ppb
NO2
0.22ppm
CO
AQI 44
Good
3.26μg/m³
PM2.5
13.43μg/m³
PM10
47.15ppb
O3
0.23ppb
SO2
2.69ppb
NO2
0.22ppm
CO
AQI 45
Good
3.70μg/m³
PM2.5
16.15μg/m³
PM10
48.78ppb
O3
0.20ppb
SO2
2.73ppb
NO2
0.24ppm
CO
AQI 43
Good
3.53μg/m³
PM2.5
14.69μg/m³
PM10
45.68ppb
O3
0.21ppb
SO2
2.75ppb
NO2
0.23ppm
CO
AQI 44
Good
3.27μg/m³
PM2.5
14.00μg/m³
PM10
47.51ppb
O3
0.24ppb
SO2
2.64ppb
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 09:00:00 on 2026-07-22.
In the last 24 hrs, the best air quality in Wilmington, Delaware was observed at 12:00:00 on 2026-07-23.
The current air quality in Wilmington, Delaware is 42, 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 3.671 μg/m3.
The current PM10 concentration at Wilmington, Delaware is 9.833 μg/m3.
The current carbon monoxide (CO) concentration at Wilmington, Delaware is 0.225 ppm.
The current sulfur dioxide (SO2) concentration at Wilmington, Delaware is 0.222 ppb.
The current ozone (O3) concentration at Wilmington, Delaware is 45.072 ppm.
The current nitrogen dioxide (NO2) concentration at Wilmington, Delaware is 2.752 ppb.
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