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Ontario, CA

Updated 9/26/2026, 9:24:33 PM PDT
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📤 Share Ontario Conditions
WEATHER
78°F. Mostly cloudy. Wind 5 mph W. 7-Day Forecast →
Low 64°High 97°
Current
AIR
AQI 71 (Moderate).
GoodHazardous
AQI 71
PUBLIC ALERTS
No active federal alerts reported.
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Sources: NWS • AirNow • NOAA Aviation Weather • Open-Meteo • Caltrans