Hourly Weather | Today Wednesday, March 18, 2026
Iowa City, Iowa
5 AM
Cloudy Night
27°
Feels Like 10°
34
Humidity: 77%
UV Index: 0
Wind: 16 mph
6 AM
Cloudy Night
25°
Feels Like 10°
37
Frost Risk: 73%
Humidity: 77%
UV Index: 0
Wind: 14 mph
7 AM
Snowy Weather
25°
Feels Like 10°
40
Frost Risk: 62%
Humidity: 77%
UV Index: 0
Wind: 12 mph
8 AM
Cloudy Weather
27°
Feels Like 25°
2
Frost Risk: 97%
Humidity: 80%
UV Index: 1
Wind: 6 mph
9 AM
Sunny Weather
28°
Feels Like 28°
0
Frost Risk: 92%
Humidity: 78%
UV Index: 2
Wind: 6 mph
10 AM
Sunny Weather
30°
Feels Like 34°
0
Humidity: 72%
UV Index: 3
Wind: 6 mph
11 AM
Sunny Weather
34°
Feels Like 37°
0
Humidity: 69%
UV Index: 4
Wind: 6 mph
12 PM
Sunny Weather
37°
Feels Like 43°
0
Humidity: 63%
UV Index: 4
Wind: 6 mph
1 PM
Cloudy Weather
39°
Feels Like 46°
0
Humidity: 60%
UV Index: 5
Wind: 6 mph
2 PM
Cloudy Weather
43°
Feels Like 48°
0
Humidity: 57%
UV Index: 4
Wind: 6 mph
3 PM
Cloudy Weather
45°
Feels Like 48°
0
Humidity: 55%
UV Index: 4
Wind: 6 mph
4 PM
Cloudy Weather
45°
Feels Like 46°
0
Humidity: 54%
UV Index: 2
Wind: 7 mph
5 PM
Cloudy Weather
46°
Feels Like 46°
0
Humidity: 52%
UV Index: 1
Wind: 6 mph
6 PM
Cloudy Weather
46°
Feels Like 45°
0
Humidity: 56%
UV Index: 1
Wind: 6 mph
7 PM
Cloudy Weather
45°
Feels Like 43°
0
Humidity: 60%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Night
43°
Feels Like 43°
0
Humidity: 62%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
41°
Feels Like 39°
0
Humidity: 65%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
39°
Feels Like 39°
0
Humidity: 68%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
39°
Feels Like 39°
0
Humidity: 70%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.28 µg/m³
  • PM10: 3.47 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

6 AM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.35 µg/m³
  • PM10: 3.57 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

7 AM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.32 µg/m³
  • PM10: 3.59 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.24 µg/m³
  • PM10: 3.58 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 AM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.18 µg/m³
  • PM10: 3.61 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.35 µg/m³
  • PM10: 3.88 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

11 AM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.18 µg/m³
  • PM10: 4.8 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.78 µg/m³
  • PM10: 6.46 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.28 µg/m³
  • PM10: 9.01 µg/m³
  • O3: 0.043 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

2 PM
48 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.53 µg/m³
  • PM10: 12.32 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

3 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.28 µg/m³
  • PM10: 15.1 µg/m³
  • O3: 0.053 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.96 µg/m³
  • PM10: 16.83 µg/m³
  • O3: 0.056 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.01 µg/m³
  • PM10: 17.93 µg/m³
  • O3: 0.058 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17 µg/m³
  • PM10: 17.96 µg/m³
  • O3: 0.055 ppm
  • NO2: 3.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.09 µg/m³
  • PM10: 17.07 µg/m³
  • O3: 0.050 ppm
  • NO2: 4.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.45 µg/m³
  • PM10: 15.41 µg/m³
  • O3: 0.044 ppm
  • NO2: 4.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.06 µg/m³
  • PM10: 14 µg/m³
  • O3: 0.041 ppm
  • NO2: 4.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.26 µg/m³
  • PM10: 13.18 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
50 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.88 µg/m³
  • PM10: 12.78 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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