Ontario International Airport (KONT) Aviation Weather: METAR, TAF & ATIS
As of 10:53 PM PDT, Oct 27, KONT is currently VFR with calm winds, visibility 10+ statute miles, and a 29,000 ft ceiling. The FAA lists no ground stop or delay program for KONT right now.
Live aviation weather for Ontario International Airport in Ontario, CA, including METAR, TAF, ATIS, flight category, wind, visibility, ceiling, altimeter and runway crosswinds.
Ontario International Airport (KONT) is one of the primary air-carrier airports serving Ontario, CA at a field elevation of 944 ft. KONT reports its own METAR and publishes a TAF, and broadcasts digital ATIS (D-ATIS), decoded live on this page as flight category, wind, visibility, ceiling and altimeter. It has 2 physical runways (08L/26R, 08R/26L), the longest 12,197 ft. The official FAA airport diagram is at the bottom of the page.
Wind calm, visibility 10+ statute miles, a few clouds at 25,000 ft, broken clouds at 29,000 ft, temperature 17°C (63°F), altimeter 29.98 inHg. Conditions are Visual Flight Rules (VFR), ceiling 29,000 ft.
METAR KONT 280553Z 00000KT 10SM FEW250 BKN290 17/13 A2998 RMK AO2 SLP145 T01720128 10233 20172 53007
Current runway configuration at KONT
As stated by the facility — not an estimate. Tap a runway for its intelligence page.
Updated 7 min ago (0553Z / 10:53 PM PDT)
This configuration has been stated since 2153Z (2:53 PM PDT).
What changed at KONT?
Since the 0453Z (9:53 PM PDT) report, compared automatically against the latest METAR.
No significant changes since the 0453Z (9:53 PM PDT) report, conditions are holding steady.
Current pilot readout for KONT
KONT is currently VFR with calm winds, visibility 10+ statute miles, and a 29,000 ft ceiling. The D-ATIS states arrivals on runway 26L and 26R and departures on runway 26L and 26R. Density altitude is approximately 1,350 ft (field elevation 944 ft). Review the latest TAF below for forecast changes before departure.
KONT by the numbers
What the long-run records say about flying here, computed for this airport alone.
The FAA issued 1 ground stop and 0 ground delay programs for ONT between October 2025 and October 2026, affecting 1 day. The reason was other or unspecified. The ground stop lasted about 15 min.
KONT reported VFR in 84% of daylight observations over 20 years, about 310 flyable days a year. August is the most reliable month and May the least, with IFR or worse 4% of the time. When conditions drop it is usually a mix of low ceilings (under 1,000 ft 2% of hours) and low visibility (under 3 miles 2%).
Over 20 years of hourly winds, the west-facing ends (26L, 26R) had the best headwind 82% of the time, the east-facing ends (08L, 08R) 18%, and winds were calm 32% of hours. Winds most often blow from the west-southwest. Crosswind on the best available runway topped 15 kt in 1% of hours.
Fog was reported on about 17 days a year, and fog or mist on 116. February and December are the foggiest months, with fog in 9% of hours, against 3% in July.
ONT departures left within 15 minutes of schedule 81% of the time across 25,874 flights, June 2025 to May 2026. Before 9 AM departures did best (93%) and 6 to 9 PM did worst (68%).
Over the last 30 days of recorded D-ATIS broadcasts, KONT ran west flow 91% of the time and east flow 9%. Runway 26R was named for arrivals most often (87% of recorded hours), and the configuration changed 76 times.
Sources: FAA ATCSCC advisories, hourly observations 2006 to 2025, the per-runway wind climatology 2006 to 2025, BTS airline on-time data and recorded runway configurations. Historical summaries, not a forecast: check the current METAR, TAF and a briefing before flight.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
D-ATIS
Digital Automatic Terminal Information Service, the live broadcast.
ONT ATIS INFO V 0553Z. 00000KT 10SM FEW250 BKN290 17/13 A2998 (TWO NINER NINER EIGHT) RMK AO2 SLP145. ILS AND VIS APR IN USE, RY26L & RY26R. LNDG AND DEPG RY 26L AND RY 26R. NOTAMS... TWY G CLSD. RY 26L IM OTS, RY 26R ALS OTS. USE CAUTION FOR NUMEROUS BIRDS OBSERVED IN VICINITY OF ONT. UAS IN THE VICINITY OF ONT AT OR BELOW 200'. PILOTS READBACK RWY ASSIGNMENTS AND HOLD SHORT INSTRUCTIONS. ...ADVS YOU HAVE INFO V.
Runway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Current wind is calm: calm wind is not a factor for runway selection, and with no wind there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 08L | 12,197 ft | CON | - | - |
| 08R | 10,200 ft | CON | - | - |
| 26L | 10,200 ft | CON | - | - |
| 26R | 12,197 ft | CON | - | - |
Open the crosswind calculator to try your own wind and runway numbers →
KONT runways
2 physical runways · 4 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.
- No closure reportedRunway 08L/26R12,197 × 150 ft · CONCurrent use26RARR/DEPWind
- 08L
- no steady wind
- 26R
- no steady wind
no active equipment NOTAM receivedView Runway Intelligence → - Restricted (NOTAM)Runway 08R/26L10,200 × 150 ft · CONCurrent use26LARR/DEPWind
- 08R
- no steady wind
- 26L
- no steady wind
2 active equipment NOTAMsView Runway Intelligence →
“Current use” is what the D-ATISstates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 23 h: wind 3→0 kt, ceiling unlimited → 29,000 ft.
KONT weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.
Recent aviation weather trends at KONT
From ATIS Alerts' hourly weather history.
Over the past 24 hours, KONT reported mostly VFR across 24 observations, with 0 flight-category changes. The lowest ceiling was 25,000 ft. Wind most often came from the W.
Most recent change: MVFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 26L/26R
- 77%
- 08L/08R
- 23%
TAF | Terminal Aerodrome Forecast
Issued 0522Z (10:22 PM PDT)
TAF KONT 280522Z 2806/2912 VRB04KT P6SM BKN250 FM282100 25009KT P6SM BKN200 FM290400 25005KT P6SM BKN200 TEMPO 2908/2912 BKN012
New to TAFs? How to read one →
Get KONT weather alerts in Telegram
Stop refreshing aviation weather manually. Track KONT in ATIS Alerts and get notified when the ATIS changes, the airport drops below VFR, or wind and ceiling conditions move closer to your minimums.
Track KONT free on TelegramLive KONT Weather
Live crosswind meter
Measured by KONT's own weather station.
Wind is calm or variable. Either end works.
Concrete · 12,197 ft. Headings from FAA runway data. Not for navigation.
Field aerial
North up
Runway 08L/26R, 08R/26L drawn from FAA threshold coordinates.
Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit
Nearby TFRs
Active FAA TFRs near KONT
FAA TFR data shows an active temporary flight restriction near KONT.
View all active US TFRs → · Official FAA TFR ↗
Verify with official FAA TFR sources before flight.
Airport info
From the FAA airport record (cycle 2026-10-01) and OurAirports.
Services
- Fuel
- 100LL · Jet A
- Attended
- 24 hours
- Repairs
- Airframe & engine, major
- Oxygen
- Bottled, high & low pressure
- Landing fee
- No
- Other services
- Air freight · Avionics · Cargo handling · Charter · Aircraft sales
- Control tower
- Yes
- Wind indicator
- Lighted
Airport
- Type
- Large airport
- ICAO
- KONT
- IATA
- ONT
- FAA LID
- ONT
- City
- Ontario
- State
- California
- Country
- United States
- Elevation
- 944 ft
- Coordinates
- 34.0560, -117.6010
- Runways
- 2 physical runways · 4 runway ends
- Longest runway
- 12,197 ft
- Weather reporting
- METAR · D-ATIS
- TAF
- Published
- ATIS
- 124.25 MHz
- Time zone
- America/Los_Angeles
- Next sunset
- 19h 4m
Is there a ground stop at ONT today? Delay status and history →
Run a flight school, FBO, or club here? Embed KONT's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
8 airports+2 more within 25 NM
25–50 NM
8 airports+2 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- IERCC - Inland Empire Radio Control Club 1 , Riverside, CA · 9 mi
- PVMAC - Pomona Valley Model Airplane Club Inc , Corona, CA · 9 mi
- Anaheim Model Airplane Club - Orange County Water District Basin #4 , Anaheim, CA · 19 mi
Historical Flying Weather at KONT
2006–2025 · ATIS Alerts Flying Weather Index
Based on historical observations from 2006–2025, KONT reported VFR conditions during about 83.5% of valid daylight observations, with an estimated 310 VFR flying days a year. August had the most VFR weather; May had the most instrument conditions. Surface winds averaged 5.1 kt, calm 25.7% of the time.
Full historical breakdown
Flight category by month
| Month | VFR % | MVFR % | IFR % | LIFR % |
|---|---|---|---|---|
| Jan | 86.3 | 10.6 | 2.2 | 0.9 |
| Feb | 82.8 | 13.6 | 3.0 | 0.6 |
| Mar | 83.0 | 13.3 | 3.1 | 0.6 |
| Apr | 82.6 | 14.8 | 2.4 | 0.2 |
| May | 73.9 | 22.0 | 3.9 | 0.1 |
| Jun | 76.8 | 19.9 | 3.3 | 0.0 |
| Jul | 89.3 | 9.2 | 1.5 | 0.1 |
| Aug | 89.8 | 8.8 | 1.4 | 0.1 |
| Sep | 87.0 | 11.4 | 1.5 | 0.2 |
| Oct | 84.0 | 12.3 | 2.8 | 0.9 |
| Nov | 85.0 | 11.0 | 2.6 | 1.3 |
| Dec | 84.3 | 11.0 | 3.6 | 1.2 |
Average wind by month
| Month | Mean wind (kt) |
|---|---|
| Jan | 4.4 kt |
| Feb | 4.5 kt |
| Mar | 5.1 kt |
| Apr | 5.8 kt |
| May | 6.3 kt |
| Jun | 6.0 kt |
| Jul | 5.9 kt |
| Aug | 5.5 kt |
| Sep | 5.0 kt |
| Oct | 4.6 kt |
| Nov | 3.9 kt |
| Dec | 3.7 kt |
Historical summary of past observations: not a forecast or safety rating. Always check the current METAR, TAF, and a weather briefing before flight.
KONT airport diagram
Official FAA taxiway and runway layout. Tap to zoom.
Official FAA airport diagram · d-TPP cycle 2611 · Not for navigation. Download the official FAA PDF ↗
Customize your ONT shirt or mug
ONT's real runway layout on the back, elevation and tower frequency on the front. Add your tail number on the sleeve.
Pilot PIREPs for Ontario International Airport (KONT)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Ontario International Airport, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for KONT yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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