Ontario is located in San Bernardino County, California. This page shows active weather alerts affecting Ontario issued by the National Weather Service.
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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:
iAlert monitors Ontario around the clock and notifies you the moment a warning is issued. Email, text message, and phone call notifications available.
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