Stay updated with real-time air quality in Middletown, 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)
71
Moderate
Middletown, Delaware
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
37.35 μg/m³
0
55
155
255
425
605+
60.52 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
5.47 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Middletown, Delaware
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AQI 67
Moderate
8.74μg/m³
PM2.5
37.60μg/m³
PM10
60.46ppb
O3
0.31ppb
SO2
5.78ppb
NO2
0.24ppm
CO
AQI 64
Moderate
9.53μg/m³
PM2.5
39.94μg/m³
PM10
58.95ppb
O3
0.35ppb
SO2
5.05ppb
NO2
0.24ppm
CO
AQI 71
Moderate
8.60μg/m³
PM2.5
37.75μg/m³
PM10
61.43ppb
O3
0.32ppb
SO2
7.12ppb
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
AQI 74
Moderate
9.64μg/m³
PM2.5
41.75μg/m³
PM10
61.74ppb
O3
0.29ppb
SO2
6.29ppb
NO2
0.24ppm
CO
AQI 77
Moderate
10.30μg/m³
PM2.5
45.56μg/m³
PM10
62.65ppb
O3
0.29ppb
SO2
6.16ppb
NO2
0.24ppm
CO
The air quality data for Delaware, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Middletown, Delaware are available every hour.
Middletown, Delaware experienced its worst air quality at 11:00:00, 2026-04-23.
The best air quality in Middletown, Delaware was observed at 01:00:00 on 2026-04-23.
The air quality in Middletown, Delaware right now is Moderate, with an AQI of 71.
In Middletown, Delaware, O3 is the most frequently found pollutant.
When air quality in Middletown, Delaware is compromised, staying indoors and wearing a mask can reduce health risks.
Middletown, Delaware currently has a PM2.5 concentration of 8.541 μg/m3.
Middletown, Delaware currently has a PM10 concentration of 37.347 μg/m3.
The current carbon monoxide (CO) level in Middletown, Delaware is 0.233 ppm.
The current sulfur dioxide (SO2) concentration in Middletown, Delaware is 0.306 ppb.
Middletown, Delaware currently has an ozone (O3) concentration of 60.525 ppm.
The current level of nitrogen dioxide (NO2) in Middletown, Delaware is 5.473 ppb.
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