National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Boise Air Terminal (KBOI)

Lat: 43.56704°NLon: 116.24053°WElev: 2822.0ft.

smoke

70°F

21°C

Humidity 30%
Wind Speed W 3 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 37°F (3°C)
Visibility 7.00 mi
Last update 04 Aug 10:35 AM MDT
Extended Forecast for

Boise ID

  • Today

    Today: Widespread smoke, mainly before 2pm. Sunny, with a high near 89. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 89 °F

    Smoke

  • Tonight

    Tonight: Widespread smoke, mainly between 9pm and midnight. Mostly clear, with a low around 58. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 58 °F

    Smoke

  • Wednesday

    Wednesday: Areas of smoke. Sunny and hot, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.

    High: 94 °F

    Areas Smoke

  • Wednesday Night

    Wednesday Night: Patchy smoke. Mostly clear, with a low around 62. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Patchy Smoke

  • Thursday

    Thursday: Patchy smoke. Sunny and hot, with a high near 100. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 100 °F

    Patchy Smoke

  • Thursday Night

    Thursday Night: Patchy smoke. Mostly clear, with a low around 66.

    Low: 66 °F

    Patchy Smoke

  • Friday

    Friday: Sunny and hot, with a high near 102.

    High: 102 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

Detailed Forecast

Today
Widespread smoke, mainly before 2pm. Sunny, with a high near 89. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Tonight
Widespread smoke, mainly between 9pm and midnight. Mostly clear, with a low around 58. Northwest wind 5 to 8 mph becoming calm in the evening.
Wednesday
Areas of smoke. Sunny and hot, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Patchy smoke. Mostly clear, with a low around 62. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Patchy smoke. Sunny and hot, with a high near 100. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Patchy smoke. Mostly clear, with a low around 66.
Friday
Sunny and hot, with a high near 102.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny and hot, with a high near 96.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny and hot, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Boise ID
 43.62°N 116.22°W (Elev. 2710 ft)
Last Update:
12:29 am MDT Aug 4, 2026
Forecast Valid:
10am MDT Aug 4, 2026-6pm MDT Aug 10, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation