Hourly Weather | Today Monday, April 27, 2026
Active Weather Warnings
St. Joseph, Missouri
4 PM
Cloudy Weather
68°
Feels Like 66°
20
Humidity: 64%
UV Index: 2
Wind: 20 mph
5 PM
Cloudy Weather
68°
Feels Like 64°
20
Humidity: 61%
UV Index: 1
Wind: 21 mph
6 PM
Cloudy Weather
66°
Feels Like 63°
20
Humidity: 60%
UV Index: 1
Wind: 20 mph
7 PM
Cloudy Weather
64°
Feels Like 59°
13
Humidity: 60%
UV Index: 0
Wind: 20 mph
8 PM
Cloudy Weather
61°
Feels Like 55°
0
Humidity: 60%
UV Index: 0
Wind: 15 mph
9 PM
Cloudy Night
57°
Feels Like 52°
0
Humidity: 62%
UV Index: 0
Wind: 14 mph
10 PM
Cloudy Night
55°
Feels Like 48°
0
Humidity: 65%
UV Index: 0
Wind: 14 mph
11 PM
Cloudy Night
52°
Feels Like 45°
0
Humidity: 70%
UV Index: 0
Wind: 13 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.78 µg/m³
  • PM10: 1.83 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.82 µg/m³
  • PM10: 1.89 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.74 µg/m³
  • PM10: 1.82 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.52 µg/m³
  • PM10: 1.61 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 1.35 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 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: 1.08 µg/m³
  • PM10: 1.18 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 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: 0.98 µg/m³
  • PM10: 1.08 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.91 µg/m³
  • PM10: 1.02 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

Weather Alerts and Warnings for St. Joseph

Severe Future Possible

Flood Watch

Flood Watch issued April 26 at 10:22PM CDT until April 27 at 7:00PM CDT by NWS Kansas City/Pleasant Hill MO
Apr 26, 10:22 PM Apr 27, 7:00 PM
WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of Kansas, including the following areas,
Atchison KS, Doniphan, Johnson KS, Leavenworth and Wyandotte and
Missouri, including the following areas, Andrew, Buchanan,
Caldwell, Carroll, Chariton, Clay, Clinton, Daviess, De Kalb,
Holt, Howard, Jackson, Lafayette, Linn MO, Livingston, Macon,
Platte, Randolph, Ray and Saline.

WHEN: Through Monday evening.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas.

ADDITIONAL DETAILS:
- Multiple rounds of heavy rainfall tonight through Monday.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Updated: Apr 27, 12:02 PM Source: NWS Alert