Hazardous Weather Conditions
Current conditions at
Ontario International Airport (KONT)
Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.
Clear
84°F
29°C
| Humidity | 32% |
| Wind Speed | WSW 11 MPH |
| Barometer | 29.87 in (1011.51 mb) |
| Dewpoint | 52°F (11°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 31 Aug 08:00 PM PDT |
Extended Forecast for
Ontario International Arpt CA
Heat Advisory September 1, 10:00am until September 2, 06:00pm
Tonight
Low: 71 °F
Clear
Labor Day
High: 102 °F
Sunny
Monday Night
Low: 74 °F
Slight Chance
ShowersTuesday
High: 101 °F
Chance
Showers then
Slight Chance
T-stormsTuesday Night
Low: 73 °F
Mostly Clear
Wednesday
High: 98 °F
Sunny
Wednesday Night
Low: 71 °F
Mostly Clear
Thursday
High: 96 °F
Sunny
Thursday Night
Low: 67 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 71. West wind 5 to 10 mph becoming light and variable after midnight.
Labor Day
Sunny, with a high near 102. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
A slight chance of showers after 11pm. Partly cloudy, with a low around 74. West wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 20%.
Tuesday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 101. Northeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Mostly clear, with a low around 73. West wind 5 to 10 mph becoming light and variable after midnight.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 67.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 92.
Additional Forecasts and Information
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Point Forecast:
Ontario International Arpt CA
34.06°N 117.58°W (Elev. 906 ft)
34.06°N 117.58°W (Elev. 906 ft)
12:54 pm PDT Aug 31, 2025
8pm PDT Aug 31, 2025-6pm PDT Sep 7, 2025
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