Hourly Weather | Today Thursday, February 26, 2026
Waterloo, Iowa
1 AM
Cloudy Night
30°
Feels Like 27°
0
Frost Risk: 52%
Humidity: 84%
UV Index: 0
Wind: 6 mph
2 AM
Cloudy Night
30°
Feels Like 28°
0
Frost Risk: 52%
Humidity: 82%
UV Index: 0
Wind: 5 mph
3 AM
Cloudy Night
28°
Feels Like 27°
0
Frost Risk: 90%
Humidity: 80%
UV Index: 0
Wind: 6 mph
4 AM
Cloudy Night
28°
Feels Like 27°
0
Frost Risk: 89%
Humidity: 82%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
30°
Feels Like 27°
0
Humidity: 78%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
30°
Feels Like 27°
0
Humidity: 76%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
32°
Feels Like 28°
0
Humidity: 75%
UV Index: 0
Wind: 7 mph
8 AM
Cloudy Weather
34°
Feels Like 30°
0
Humidity: 74%
UV Index: 1
Wind: 8 mph
9 AM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 69%
UV Index: 2
Wind: 9 mph
10 AM
Cloudy Weather
41°
Feels Like 37°
0
Humidity: 63%
UV Index: 3
Wind: 10 mph
11 AM
Cloudy Weather
45°
Feels Like 41°
0
Humidity: 59%
UV Index: 3
Wind: 12 mph
12 PM
Cloudy Weather
46°
Feels Like 45°
0
Humidity: 55%
UV Index: 4
Wind: 13 mph
1 PM
Cloudy Weather
50°
Feels Like 48°
0
Humidity: 51%
UV Index: 3
Wind: 13 mph
2 PM
Cloudy Weather
54°
Feels Like 50°
0
Humidity: 48%
UV Index: 3
Wind: 13 mph
3 PM
Cloudy Weather
55°
Feels Like 54°
0
Humidity: 44%
UV Index: 2
Wind: 12 mph
4 PM
Cloudy Weather
54°
Feels Like 50°
0
Humidity: 45%
UV Index: 1
Wind: 10 mph
5 PM
Cloudy Weather
52°
Feels Like 46°
0
Humidity: 48%
UV Index: 0
Wind: 9 mph
6 PM
Cloudy Night
46°
Feels Like 41°
0
Humidity: 54%
UV Index: 0
Wind: 8 mph
7 PM
Cloudy Night
43°
Feels Like 36°
0
Humidity: 57%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
39°
Feels Like 32°
0
Humidity: 60%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
36°
Feels Like 28°
0
Humidity: 62%
UV Index: 0
Wind: 9 mph
10 PM
Cloudy Night
34°
Feels Like 27°
0
Humidity: 65%
UV Index: 0
Wind: 9 mph
11 PM
Cloudy Night
30°
Feels Like 23°
0
Humidity: 68%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.36 µg/m³
  • PM10: 3.76 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.39 µg/m³
  • PM10: 3.82 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

3 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.47 µg/m³
  • PM10: 3.93 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.6 µg/m³
  • PM10: 4.1 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 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: 3.78 µg/m³
  • PM10: 4.32 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.98 µg/m³
  • PM10: 4.56 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.13 µg/m³
  • PM10: 4.76 µg/m³
  • O3: 0.033 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.

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

Pollutant Concentrations:

  • PM2.5: 4.21 µg/m³
  • PM10: 4.86 µg/m³
  • O3: 0.031 ppm
  • NO2: 3.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.22 µg/m³
  • PM10: 4.83 µg/m³
  • O3: 0.031 ppm
  • NO2: 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
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.98 µg/m³
  • PM10: 4.41 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 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: 3.75 µg/m³
  • PM10: 4.1 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.57 µg/m³
  • PM10: 3.89 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.75 µg/m³
  • PM10: 4.14 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.2 µg/m³
  • PM10: 4.75 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.53 µg/m³
  • PM10: 5.3 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.15 µg/m³
  • PM10: 6.07 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.94 µg/m³
  • PM10: 6.94 µg/m³
  • O3: 0.042 ppm
  • NO2: 3.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.34 µg/m³
  • PM10: 7.45 µg/m³
  • O3: 0.038 ppm
  • NO2: 5.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 7.68 µg/m³
  • O3: 0.035 ppm
  • NO2: 5.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.7 µg/m³
  • PM10: 7.93 µg/m³
  • O3: 0.035 ppm
  • NO2: 5.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.07 µg/m³
  • PM10: 8.3 µg/m³
  • O3: 0.037 ppm
  • NO2: 5.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.44 µg/m³
  • PM10: 8.65 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.88 µg/m³
  • PM10: 9.04 µg/m³
  • O3: 0.036 ppm
  • NO2: 5 ppb
  • SO2: 0.2 ppb
  • CO: 0.20 ppm

Health Recommendations:

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