Hourly Weather | Today Wednesday, March 18, 2026
Ames, Iowa
4 AM
Cloudy Night
21°
Feels Like 18°
20
Frost Risk: 100%
Humidity: 88%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
21°
Feels Like 18°
20
Frost Risk: 100%
Humidity: 89%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
19°
Feels Like 16°
20
Frost Risk: 100%
Humidity: 90%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Night
19°
Feels Like 16°
13
Frost Risk: 100%
Humidity: 92%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
23°
Feels Like 25°
0
Frost Risk: 100%
Humidity: 87%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
27°
Feels Like 30°
0
Frost Risk: 93%
Humidity: 82%
UV Index: 2
Wind: 5 mph
10 AM
Cloudy Weather
32°
Feels Like 36°
0
Humidity: 75%
UV Index: 3
Wind: 5 mph
11 AM
Cloudy Weather
36°
Feels Like 43°
0
Humidity: 72%
UV Index: 4
Wind: 6 mph
12 PM
Cloudy Weather
41°
Feels Like 46°
0
Humidity: 71%
UV Index: 4
Wind: 6 mph
1 PM
Cloudy Weather
45°
Feels Like 52°
0
Humidity: 67%
UV Index: 5
Wind: 6 mph
2 PM
Cloudy Weather
48°
Feels Like 54°
0
Humidity: 62%
UV Index: 4
Wind: 7 mph
3 PM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 59%
UV Index: 4
Wind: 7 mph
4 PM
Cloudy Weather
54°
Feels Like 55°
0
Humidity: 55%
UV Index: 3
Wind: 8 mph
5 PM
Cloudy Weather
54°
Feels Like 54°
0
Humidity: 60%
UV Index: 2
Wind: 7 mph
6 PM
Cloudy Weather
52°
Feels Like 50°
0
Humidity: 65%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
48°
Feels Like 46°
0
Humidity: 72%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
45°
Feels Like 43°
0
Humidity: 78%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
43°
Feels Like 41°
0
Humidity: 85%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 91%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 90%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.03 µg/m³
  • PM10: 5.4 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.77 µg/m³
  • PM10: 6.21 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.61 µg/m³
  • PM10: 7.14 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.46 µg/m³
  • PM10: 8.1 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.13 µg/m³
  • PM10: 8.89 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.4 µg/m³
  • PM10: 9.33 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.59 µg/m³
  • PM10: 9.7 µg/m³
  • O3: 0.028 ppm
  • NO2: 2.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.25 µg/m³
  • PM10: 10.52 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

12 PM
43 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.3 µg/m³
  • PM10: 11.63 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.99 µg/m³
  • PM10: 13.32 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.68 µg/m³
  • PM10: 14.04 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.72 µg/m³
  • PM10: 15.1 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.73 µg/m³
  • PM10: 15.1 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.3 µg/m³
  • PM10: 13.69 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.81 µg/m³
  • PM10: 12.17 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.41 µg/m³
  • PM10: 10.7 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.33 µg/m³
  • PM10: 9.51 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.74 µg/m³
  • PM10: 8.84 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.26 µg/m³
  • PM10: 8.31 µg/m³
  • O3: 0.043 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.

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

Pollutant Concentrations:

  • PM2.5: 6.63 µg/m³
  • PM10: 7.64 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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