Hourly Weather | Today Monday, September 21, 2026
Middletown, Delaware
6 AM
Cloudy Weather
66°
Feels Like 63°
20
Humidity: 93%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Weather
64°
Feels Like 63°
16
Humidity: 92%
UV Index: 0
Wind: 8 mph
8 AM
Cloudy Weather
66°
Feels Like 64°
7
Humidity: 86%
UV Index: 0
Wind: 9 mph
9 AM
Cloudy Weather
68°
Feels Like 66°
7
Humidity: 81%
UV Index: 1
Wind: 9 mph
10 AM
Cloudy Weather
70°
Feels Like 68°
7
Humidity: 76%
UV Index: 1
Wind: 11 mph
11 AM
Cloudy Weather
70°
Feels Like 68°
7
Humidity: 72%
UV Index: 1
Wind: 12 mph
12 PM
Cloudy Weather
72°
Feels Like 70°
7
Humidity: 70%
UV Index: 1
Wind: 11 mph
1 PM
Cloudy Weather
72°
Feels Like 70°
9
Humidity: 69%
UV Index: 2
Wind: 11 mph
2 PM
Cloudy Weather
72°
Feels Like 70°
13
Humidity: 68%
UV Index: 1
Wind: 11 mph
3 PM
Cloudy Weather
72°
Feels Like 72°
13
Humidity: 66%
UV Index: 1
Wind: 11 mph
4 PM
Cloudy Weather
70°
Feels Like 68°
17
Humidity: 71%
UV Index: 1
Wind: 11 mph
5 PM
Cloudy Weather
70°
Feels Like 68°
35
Humidity: 72%
UV Index: 1
Wind: 9 mph
6 PM
Cloudy Weather
68°
Feels Like 66°
38
Humidity: 75%
UV Index: 0
Wind: 9 mph
7 PM
Rainy Weather
68°
Feels Like 63°
42
Humidity: 79%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Weather
64°
Feels Like 63°
38
Humidity: 86%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Weather
64°
Feels Like 63°
34
Humidity: 89%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
64°
Feels Like 63°
40
Humidity: 87%
UV Index: 0
Wind: 9 mph
11 PM
Rainy Weather
64°
Feels Like 59°
54
Humidity: 90%
UV Index: 0
Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
24 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.64 µg/m³
  • PM10: 6.74 µg/m³
  • O3: 0.012 ppm
  • NO2: 4.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM
24 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.75 µg/m³
  • PM10: 7.03 µg/m³
  • O3: 0.010 ppm
  • NO2: 4.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.6 µg/m³
  • PM10: 7.06 µg/m³
  • O3: 0.009 ppm
  • NO2: 4.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
21 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 6.68 µg/m³
  • O3: 0.010 ppm
  • NO2: 3.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
19 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.54 µg/m³
  • PM10: 6.11 µg/m³
  • O3: 0.013 ppm
  • NO2: 3.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
18 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.36 µg/m³
  • PM10: 5.83 µg/m³
  • O3: 0.017 ppm
  • NO2: 3 ppb
  • SO2: 0.8 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.32 µg/m³
  • PM10: 5.4 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.05 µg/m³
  • PM10: 5.96 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.22 µg/m³
  • PM10: 7.11 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.88 µg/m³
  • PM10: 7.73 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.87 µg/m³
  • PM10: 7.67 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.86 µg/m³
  • PM10: 7.72 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.68 µg/m³
  • PM10: 7.7 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.14 µg/m³
  • PM10: 7.42 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.27 µg/m³
  • PM10: 6.84 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.18 µg/m³
  • PM10: 6.01 µg/m³
  • O3: 0.033 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.27 µg/m³
  • PM10: 5.32 µg/m³
  • O3: 0.031 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.63 µg/m³
  • PM10: 4.88 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.