Hourly Weather | Today Tuesday, July 21, 2026
St. Joseph, Missouri
3 AM
Cloudy Night
79°
Feels Like 84°
0
Humidity: 82%
UV Index: 0
Wind: 4 mph
4 AM
Cloudy Night
75°
Feels Like 81°
0
Humidity: 87%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
73°
Feels Like 79°
0
Humidity: 91%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
73°
Feels Like 79°
0
Humidity: 96%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
73°
Feels Like 81°
0
Humidity: 91%
UV Index: 1
Wind: 5 mph
8 AM
Cloudy Weather
77°
Feels Like 84°
0
Humidity: 85%
UV Index: 2
Wind: 6 mph
9 AM
Cloudy Weather
79°
Feels Like 88°
0
Humidity: 76%
UV Index: 3
Wind: 7 mph
10 AM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 66%
UV Index: 5
Wind: 7 mph
11 AM
Cloudy Weather
84°
Feels Like 91°
0
Humidity: 59%
UV Index: 7
Wind: 9 mph
12 PM
Cloudy Weather
86°
Feels Like 93°
0
Humidity: 52%
UV Index: 9
Wind: 9 mph
1 PM
Cloudy Weather
88°
Feels Like 93°
0
Humidity: 47%
UV Index: 10
Wind: 10 mph
2 PM
Cloudy Weather
90°
Feels Like 93°
0
Humidity: 44%
UV Index: 9
Wind: 10 mph
3 PM
Cloudy Weather
90°
Feels Like 93°
0
Humidity: 41%
UV Index: 7
Wind: 12 mph
4 PM
Cloudy Weather
90°
Feels Like 91°
0
Humidity: 42%
UV Index: 5
Wind: 12 mph
5 PM
Cloudy Weather
88°
Feels Like 90°
0
Humidity: 44%
UV Index: 3
Wind: 10 mph
6 PM
Cloudy Weather
88°
Feels Like 88°
0
Humidity: 46%
UV Index: 2
Wind: 10 mph
7 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 50%
UV Index: 1
Wind: 9 mph
8 PM
Cloudy Weather
82°
Feels Like 81°
0
Humidity: 55%
UV Index: 0
Wind: 7 mph
9 PM
Night
79°
Feels Like 79°
0
Humidity: 62%
UV Index: 0
Wind: 6 mph
10 PM
Night
75°
Feels Like 75°
0
Humidity: 71%
UV Index: 0
Wind: 5 mph
11 PM
Night
72°
Feels Like 72°
0
Humidity: 78%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.4 µg/m³
  • PM10: 2.81 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.35 µg/m³
  • PM10: 2.75 µg/m³
  • O3: 0.026 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.27 µg/m³
  • PM10: 2.66 µg/m³
  • O3: 0.025 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.2 µg/m³
  • PM10: 2.6 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.16 µg/m³
  • PM10: 2.56 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.14 µg/m³
  • PM10: 2.57 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.21 µg/m³
  • PM10: 2.65 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.54 µg/m³
  • PM10: 3 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.73 µg/m³
  • PM10: 4.18 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.95 µg/m³
  • PM10: 5.31 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.6 ppb
  • SO2: 1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.74 µg/m³
  • PM10: 6.01 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.5 ppb
  • SO2: 1 ppb
  • CO: 0.10 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.31 µg/m³
  • PM10: 6.51 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

3 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.08 µg/m³
  • PM10: 7.27 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

4 PM
59 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.93 µg/m³
  • PM10: 8.13 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

5 PM
59 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.6 µg/m³
  • PM10: 8.82 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

6 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.81 µg/m³
  • PM10: 9.02 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 8.54 µg/m³
  • PM10: 8.74 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.8 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.94 µg/m³
  • PM10: 8.12 µg/m³
  • O3: 0.049 ppm
  • NO2: 1 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 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: 7.38 µg/m³
  • PM10: 7.55 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.89 µg/m³
  • PM10: 7.05 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.4 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.36 µg/m³
  • PM10: 6.52 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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