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

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Clear

70°F

21°C

Humidity 60%
Wind Speed NNW 8 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 04 Aug 11:00 AM PDT
Extended Forecast for

Newcastle WA

  • Today

    Today: Patchy smoke. Sunny, with a high near 84. North wind around 7 mph.

    High: 84 °F

    Patchy Smoke

  • Tonight

    Tonight: Areas of smoke before 2am, then patchy smoke after 3am. Clear, with a low around 58. North northeast wind 3 to 6 mph.

    Low: 58 °F

    Areas Smoke

  • Wednesday

    Wednesday: Patchy smoke. Sunny, with a high near 89. North northwest wind 3 to 6 mph.

    High: 89 °F

    Patchy Smoke

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. North northwest wind around 6 mph becoming light and variable  in the evening.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89. Light and variable wind.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Patchy smoke. Sunny, with a high near 84. North wind around 7 mph.
Tonight
Areas of smoke before 2am, then patchy smoke after 3am. Clear, with a low around 58. North northeast wind 3 to 6 mph.
Wednesday
Patchy smoke. Sunny, with a high near 89. North northwest wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 60. North northwest wind around 6 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 89. Light and variable wind.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 56.
Monday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
2:17 am PDT Aug 4, 2026
11am PDT Aug 4, 2026-6pm PDT Aug 10, 2026
 
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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