Weather at Ontario International Airport (ONT)

Ontario, California KONT #53 US airport by passengers

Official aviation observations and forecasts for ONT.

FAA status: No delays reported Updated just now
Weather now: MVFR 65°F Observed 1 h ago
Late departures: 23.0%May 2026 to July 2026
Security line: No recent reportsAdd yours

Current conditions at ONT

MVFR

65°F18°C

Marginal: lower cloud or reduced visibility. Some delays are possible.

Wind: 240° 6 mph
Visibility: 5 mi
Clouds: FEW 800 ft, SCT 2,700 ft, OVC 3,200 ft
Ceiling: 3,200 ft
Conditions: BR
Pressure: 29.70 inHg

METARMETAR KONT 111753Z 24005KT 5SM BR FEW008 SCT027 OVC032 18/17 A2970 RMK AO2 RAE22 SLP047 P0001 60042 T01830167 10183 20172 51037

TAFTAF KONT 111735Z 1118/1224 26008KT 5SM -SHRA BKN020 OVC080 FM112000 24009KT P6SM BKN020 BKN050 FM120400 25006KT P6SM VCSH OVC025 FM121500 25005KT P6SM VCSH FEW025 BKN050 FM121800 24009KT P6SM FEW050

Source: NOAA Aviation Weather Center. Observed 1 h ago.

Forecast for the ONT area

This Afternoon70°F
Rain Showers Likely
10 to 15 mph SW · 51% rain

Tonight55°F
Rain Showers
5 to 10 mph SW · 75% rain

Columbus Day66°F
Rain Showers
5 to 10 mph SW · 75% rain

Monday Night51°F
Chance Rain Showers then Partly Cloudy
0 to 5 mph S · 31% rain

Tuesday74°F
Sunny
0 to 5 mph S · 1% rain

Tuesday Night52°F
Mostly Clear
0 to 5 mph NW · 0% rain

Wednesday78°F
Sunny
0 to 5 mph NE · 0% rain

Wednesday Night56°F
Clear
0 to 20 mph N · 0% rain

Source: National Weather Service. Updated 18 min ago.

Runways

Runway	Length	Width	Surface
08L/26R	12,197 ft	150 ft	CON
08R/26L	10,200 ft	150 ft	CON

Source: OurAirports (public domain). Runway data can lag behind construction closures.

Air traffic frequencies

Service	Description	MHz
ATIS	ATIS	124.250
CLD	CLNC DEL	118.100
GND	GND	121.900
TWR	TWR	120.600