KONT TAF
Terminal aerodrome forecast for Ontario International (ONT · KONT), Ontario, CA. Issued 20 Sep 2026 2331Z, valid 0000Z to 0600Z, decoded period by period below. · Open on the map
All of Ontario International — runways, frequencies, charts and live weatherTAF issued 20 Sep 2026 2331Z
valid 0000Z to 0600ZTAF KONT 202331Z 2100/2206 25008KT P6SM BKN250 FM210500 VRB04KT P6SM FEW020 BKN250 FM210700 VRB04KT P6SM BKN018 FM211800 VRB04KT P6SM SCT020 BKN250 FM212100 25010KT P6SM BKN250 FM220400 VRB04KT P6SM FEW020 BKN250
Times are UTC (Zulu), as they appear in the bulletin.
Period by period
| Period (UTC) | Change | Wind | Vis | Ceiling | Sky | Cat |
|---|---|---|---|---|---|---|
| 0000Z to 0500Z | Initial | 250° at 8 kt | 6+ SM | 25,000 ft BKN | Broken at 25,000 ft AGL | VFR |
| 0500Z to 0700Z | FM | Variable at 4 kt | 6+ SM | 25,000 ft BKN | Few at 2,000 ft AGL, Broken at 25,000 ft AGL | VFR |
| 0700Z to 1800Z | FM | Variable at 4 kt | 6+ SM | 1,800 ft BKN | Broken at 1,800 ft AGL | MVFR |
| 1800Z to 2100Z | FM | Variable at 4 kt | 6+ SM | 25,000 ft BKN | Scattered at 2,000 ft AGL, Broken at 25,000 ft AGL | VFR |
| 2100Z to 0400Z | FM | 250° at 10 kt | 6+ SM | 25,000 ft BKN | Broken at 25,000 ft AGL | VFR |
| 0400Z to 0600Z | FM | Variable at 4 kt | 6+ SM | 25,000 ft BKN | Few at 2,000 ft AGL, Broken at 25,000 ft AGL | VFR |
What the change groups mean
- FM
- From — a rapid, permanent change to the conditions that follow.
What the categories mean
- VFR
- Visual flight rules — ceiling above 3,000 ft and visibility greater than 5 SM.
- MVFR
- Marginal VFR — ceiling 1,000 to 3,000 ft and/or visibility 3 to 5 SM.
Frequently asked
What is the current TAF for KONT?
The forecast issued 20 Sep 2026 2331Z for Ontario International reads: TAF KONT 202331Z 2100/2206 25008KT P6SM BKN250 FM210500 VRB04KT P6SM FEW020 BKN250 FM210700 VRB04KT P6SM BKN018 FM211800 VRB04KT P6SM SCT020 BKN250 FM212100 25010KT P6SM BKN250 FM220400 VRB04KT P6SM FEW020 BKN250
How far ahead does a TAF forecast?
A TAF covers a 24-hour period at most airports and 30 hours at larger ones, issued four times a day at 0000Z, 0600Z, 1200Z and 1800Z. It describes conditions within roughly 5 statute miles of the airport, not the surrounding area.
What do FM, BECMG and TEMPO mean?
FM (from) marks a rapid, permanent change at the stated time. BECMG (becoming) marks a gradual change over the stated window. TEMPO marks conditions expected for less than half the period, in spells of under an hour each. PROB30 and PROB40 give the probability of the conditions that follow.
More about KONT
Forecasts from the US National Weather Service Aviation Weather Center. Times are UTC (Zulu). For planning and education only — always confirm with an official preflight briefing.
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