Current Weather
Raw METAR
Clouds - Visual Profile
Weather Briefing
VFROntario International Airport is currently reporting visual flight rules (VFR) conditions with scattered clouds at 1,100 feet and 10 SM visibility.
Wind Analysis
Winds are calm, presenting no crosswind concerns for any runway.
Visibility & Ceiling
Visibility is 10 SM. No ceiling exists. Cloud layers reported: scattered at 1,100 ft.
Temperature & Moisture
Temperature is 13°C (55°F) with a dewpoint of 11°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.
Forecast Outlook
The TAF forecast covers the next 27 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions. Temporary MVFR conditions are forecast between 10:00Z and 14:00Z.
Pilot Recommendations
Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
Forecast (TAF)
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
| 08L/26R | 12,198 ft | 150 ft | CON | 90° |
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90° angle
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| 08R/26L | 10,200 ft | 150 ft | CON | 90° |
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Weather Statistics - KONT
5,683 observations | Sep 2025 - Apr 2026Flight Rules Distribution
Ontario International Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 83.4% of the time. Prevailing winds are from the W averaging 6.3 knots. Calm conditions occur 33.7% of the time. Temperature extremes range from 3°C to 37°C, reflecting significant seasonal variation. The best months for VFR flying are March, April, February.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 5,683 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.
Ontario International Airport - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
About Ontario International Airport
Overview
Ontario International Airport serves the Greater Los Angeles metropolitan area, positioned in San Bernardino County, California. As a large airport situated at 944 feet above mean sea level, KONT provides critical commercial and cargo aviation services for the Inland Empire region. The airport's strategic location and substantial runway infrastructure make it a significant transportation hub in Southern California.
Flying Conditions
Southern California's climate offers generally stable weather conditions with minimal precipitation and consistent visibility. Pilots can expect moderate temperature variations and typically clear skies, though occasional marine layer influences from coastal systems can impact morning visibility. The airport's elevation at 944 feet MSL provides relatively straightforward atmospheric conditions for most flight operations.
Notable Features
The airport features two substantial concrete runways: 08L/26R at 12,198 feet and 08R/26L at 10,200 feet, providing extensive operational flexibility for various aircraft types. Its geographic positioning near the San Gabriel and San Bernardino mountain ranges presents potential wind gradient and terrain interaction considerations for approaching and departing aircraft. The airport's coordinate location at 34.056000, -117.600998 places it within a complex regional airspace system.
Approach Considerations
Runway orientations of 08/26 suggest predominant west-southwest wind patterns typical of the region. Pilots should anticipate potential crosswind conditions, particularly during seasonal transition periods. The substantial runway lengths accommodate a wide range of aircraft, from regional commuters to larger commercial and cargo platforms, enabling versatile approach and departure strategies.
Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.
Learn More
Recommended guides based on current conditions at KONT
Official Data Sources
Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.