Hourly Weather | Today Tuesday, April 7, 2026
Waterloo, Iowa
1 PM
Cloudy Weather
43°
Feels Like 41°
0
Humidity: 37%
UV Index: 6
Wind: 13 mph
2 PM
Cloudy Weather
45°
Feels Like 43°
2
Humidity: 37%
UV Index: 6
Wind: 14 mph
3 PM
Cloudy Weather
45°
Feels Like 39°
2
Humidity: 37%
UV Index: 3
Wind: 14 mph
4 PM
Cloudy Weather
46°
Feels Like 39°
2
Humidity: 38%
UV Index: 2
Wind: 15 mph
5 PM
Cloudy Weather
46°
Feels Like 37°
2
Humidity: 39%
UV Index: 1
Wind: 15 mph
6 PM
Cloudy Weather
48°
Feels Like 39°
2
Humidity: 37%
UV Index: 1
Wind: 15 mph
7 PM
Cloudy Weather
45°
Feels Like 36°
4
Humidity: 41%
UV Index: 0
Wind: 15 mph
8 PM
Cloudy Weather
45°
Feels Like 34°
7
Humidity: 46%
UV Index: 0
Wind: 16 mph
9 PM
Cloudy Weather
43°
Feels Like 30°
7
Humidity: 50%
UV Index: 0
Wind: 15 mph
10 PM
Cloudy Weather
41°
Feels Like 30°
7
Humidity: 53%
UV Index: 0
Wind: 16 mph
11 PM
Cloudy Weather
41°
Feels Like 28°
7
Humidity: 56%
UV Index: 0
Wind: 16 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.79 µg/m³
  • PM10: 2.12 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.22 µg/m³
  • PM10: 2.55 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 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: 2.74 µg/m³
  • PM10: 3.09 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.2 µg/m³
  • PM10: 3.56 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 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: 3.68 µg/m³
  • PM10: 4.01 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.3 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 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.97 µg/m³
  • PM10: 4.29 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.5 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 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.06 µg/m³
  • PM10: 4.37 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 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: 4 µg/m³
  • PM10: 4.31 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.92 µg/m³
  • PM10: 4.22 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.74 µg/m³
  • PM10: 4.02 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.57 µg/m³
  • PM10: 3.8 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.2 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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