Hourly Weather | Today Monday, October 27, 2025
Waterloo, Iowa
2 AM
Cloudy Weather
46°
Feels Like 41°
49
Humidity: 72%
Wind: 11 mph
UV Index: 0
3 AM
Cloudy Weather
46°
Feels Like 41°
49
Humidity: 74%
Wind: 9 mph
UV Index: 0
4 AM
Rainy Weather
46°
Feels Like 37°
56
Humidity: 76%
Wind: 9 mph
UV Index: 0
5 AM
Rainy Weather
46°
Feels Like 37°
64
Humidity: 76%
Wind: 9 mph
UV Index: 0
6 AM
Rainy Weather
46°
Feels Like 37°
64
Humidity: 78%
Wind: 9 mph
UV Index: 0
7 AM
Cloudy Weather
46°
Feels Like 39°
49
Humidity: 80%
Wind: 9 mph
UV Index: 0
8 AM
Cloudy Weather
45°
Feels Like 39°
49
Humidity: 83%
Wind: 9 mph
UV Index: 0
9 AM
Rainy Weather
46°
Feels Like 37°
66
Humidity: 82%
Wind: 9 mph
UV Index: 0
10 AM
Rainy Weather
46°
Feels Like 39°
66
Humidity: 82%
Wind: 11 mph
UV Index: 0
11 AM
Cloudy Weather
48°
Feels Like 43°
49
Humidity: 81%
Wind: 11 mph
UV Index: 1
12 PM
Rainy Weather
50°
Feels Like 41°
66
Humidity: 78%
Wind: 11 mph
UV Index: 1
1 PM
Rainy Weather
50°
Feels Like 43°
66
Humidity: 76%
Wind: 11 mph
UV Index: 1
2 PM
Cloudy Weather
52°
Feels Like 46°
49
Humidity: 74%
Wind: 11 mph
UV Index: 1
3 PM
Rainy Weather
52°
Feels Like 45°
66
Humidity: 71%
Wind: 11 mph
UV Index: 1
4 PM
Rainy Weather
52°
Feels Like 45°
66
Humidity: 70%
Wind: 11 mph
UV Index: 0
5 PM
Rainy Weather
52°
Feels Like 45°
66
Humidity: 74%
Wind: 9 mph
UV Index: 0
6 PM
Rainy Weather
50°
Feels Like 43°
66
Humidity: 79%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Weather
48°
Feels Like 46°
49
Humidity: 84%
Wind: 7 mph
UV Index: 0
8 PM
Rainy Weather
48°
Feels Like 37°
73
Humidity: 86%
Wind: 12 mph
UV Index: 0
9 PM
Rainy Weather
48°
Feels Like 37°
64
Humidity: 85%
Wind: 15 mph
UV Index: 0
10 PM
Rainy Weather
48°
Feels Like 36°
73
Humidity: 83%
Wind: 15 mph
UV Index: 0
11 PM
Rainy Weather
48°
Feels Like 36°
75
Humidity: 84%
Wind: 16 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.65 µg/m³
  • PM10: 11.44 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 AM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.94 µg/m³
  • PM10: 11.73 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 AM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.13 µg/m³
  • PM10: 11.9 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.4 µg/m³
  • PM10: 12.14 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.66 µg/m³
  • PM10: 12.4 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.98 µg/m³
  • PM10: 12.71 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.34 µg/m³
  • PM10: 13.1 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.75 µg/m³
  • PM10: 13.55 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

10 AM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.03 µg/m³
  • PM10: 13.89 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

11 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.22 µg/m³
  • PM10: 14.13 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.52 µg/m³
  • PM10: 14.47 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.95 µg/m³
  • PM10: 14.92 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.41 µg/m³
  • PM10: 14.33 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.06 µg/m³
  • PM10: 12.88 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 PM
47 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.32 µg/m³
  • PM10: 12.1 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.69 µg/m³
  • PM10: 11.45 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 PM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.5 µg/m³
  • PM10: 11.25 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 PM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.18 µg/m³
  • PM10: 10.92 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 PM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.59 µg/m³
  • PM10: 10.31 µg/m³
  • O3: 0.043 ppm
  • NO2: 2 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.83 µg/m³
  • PM10: 9.51 µg/m³
  • O3: 0.042 ppm
  • NO2: 2 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 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: 7.9 µg/m³
  • PM10: 8.54 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.9 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.06 µg/m³
  • PM10: 7.68 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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