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

Hazardous Weather Conditions

Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.

Clear

82°F

28°C

Humidity 37%
Wind Speed S 3 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 20 Aug 10:20 AM PDT
Extended Forecast for

2 Miles SSW Rancho Cucamonga CA

Heat Advisory until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 23, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 97 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 101. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 101 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. West wind 10 to 15 mph becoming light in the evening.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 100. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 100 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 97.

    High: 97 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 97. West wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 71. West wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 101. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 74. West wind 10 to 15 mph becoming light in the evening.
Friday
Sunny, with a high near 100. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 73.
Saturday
Mostly sunny, with a high near 97.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 71.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Rancho Cucamonga CA
 34.1°N 117.59°W (Elev. 1224 ft)
Last Update:
2:05 am PDT Aug 20, 2025
Forecast Valid:
10am PDT Aug 20, 2025-6pm PDT Aug 26, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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