Air Quality Concerns; Fire Weather; Extreme Heat; Flash Flooding

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Dangerous heat and fire weather concerns for portions of the Four Corners region into the central Great Basin. Heavy rainfall and flash flooding possible for the Southeast through Monday. For Hawaii, gusty trade winds a drier weather could result in any fires that start to spread rapidly. Read More >

Current conditions at

Ankeny Regional Airport (KIKV)

Lat: 41.69°NLon: 93.57°WElev: 886ft.

Fair

63°F

17°C

Humidity 94%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 4 Aug 4:35 am CDT
Extended Forecast for

Johnston IA

  • Today

    Today: Mostly sunny, with a high near 79. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. East wind 3 to 5 mph.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. Southeast wind around 6 mph.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Southeast wind 6 to 10 mph.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 79. Calm wind becoming east southeast around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 59. East wind 3 to 5 mph.
Tuesday
Sunny, with a high near 83. Calm wind becoming southeast 5 to 7 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 64. Southeast wind around 6 mph.
Wednesday
Mostly sunny, with a high near 87. Southeast wind 6 to 10 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 73.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnston IA
 41.69°N 93.71°W
4:34 am CDT Aug 4, 2025
4am CDT Aug 4, 2025-6pm CDT Aug 10, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database