Weather Alerts for Ontario, CA

San Bernardino County, California

Ontario is located in San Bernardino County, California. This page shows active weather alerts affecting Ontario issued by the National Weather Service.

NWS Forecast Office: Weather alerts for this area are issued by the National Weather Service VEF office.

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Active Alerts for Ontario

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Active Alert Map — California

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Weather Overview for Ontario

Ontario, in San Bernardino County in California's Inland Empire, faces wildfires, Santa Ana wind events, extreme summer heat, atmospheric river flooding, and regional wildfire smoke with frequent air-quality alerts.

Common alert types for this area:

Red Flag Warning
Excessive Heat Warning
High Wind Warning
Flash Flood Warning
Fire Weather Watch

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iAlert monitors Ontario around the clock and notifies you the moment a warning is issued. Email, text message, and phone call notifications available.