Ontario International Airport

KONT / ONT

Ontario, US

Current TAF Forecast

Raw TAF:
TAF KONT 220829Z 2208/2312 23007KT P6SM BKN013 BKN040 TEMPO 2212/2216 SCT015 FM221600 VRB04KT P6SM SCT015 SCT040 FM222100 25011KT P6SM SCT250 FM230500 VRB04KT P6SM FEW250

Detailed TAF Table

Parameter
Wed
08:00Z
+-1h
Wed
09:00Z
+0h
Wed
10:00Z
+1h
Wed
11:00Z
+2h
Wed
12:00Z
+3h
Wed
13:00Z
+4h
Wed
14:00Z
+5h
Wed
15:00Z
+6h
Wed
16:00Z
+7h
Wed
17:00Z
+8h
Wed
18:00Z
+9h
Wed
19:00Z
+10h
Wed
20:00Z
+11h
Wed
21:00Z
+12h
Wed
22:00Z
+13h
Wed
23:00Z
+14h
Thu
00:00Z
+15h
Thu
01:00Z
+16h
Thu
02:00Z
+17h
Thu
03:00Z
+18h
Thu
04:00Z
+19h
Thu
05:00Z
+20h
Thu
06:00Z
+21h
Thu
07:00Z
+22h
Thu
08:00Z
+23h
Thu
09:00Z
+24h
Thu
10:00Z
+25h
Wind Dir
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
VRB
VRB
VRB
VRB
VRB
250°
W
250°
W
250°
W
250°
W
250°
W
250°
W
230°
SW
230°
SW
VRB
VRB
VRB
VRB
VRB
VRB
Wind Speed
7 kt
7 kt
7 kt
7 kt
7 kt
7 kt
7 kt
7 kt
4 kt
4 kt
4 kt
4 kt
4 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
7 kt
7 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN013
BKN040
BKN013
BKN040
BKN013
BKN040
BKN013
BKN040
SCT015
SCT015
SCT015
SCT015
SCT015
SCT040
SCT015
SCT040
SCT015
SCT040
SCT015
SCT040
SCT015
SCT040
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
BKN013
BKN040
BKN013
BKN040
FEW250
FEW250
FEW250
FEW250
FEW250
FEW250
Ceiling
1,300 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
1,300 ft
AGL
1,300 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR MVFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:33Z
☀️
Day
🌇 18:33Z
☀️
Day
🌇 18:33Z
🌇
Dusk
🌇 18:33Z
🌙
Night
🌇 18:33Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:25Z
🌙
Night
🌅 05:25Z
🌅
Dawn
🌅 05:25Z
☀️
Day
🌅 05:25Z
☀️
Day
🌅 05:25Z
☀️
Day
☀️
Day
☀️
Day
Flight Rules
VFR: Visual Flight Rules
MVFR: Marginal VFR
IFR: Instrument Flight Rules
LIFR: Low IFR
Ceiling Colors
Red: < 500ft
Amber: 500-1000ft
Blue: 1000-3000ft
Green: > 3000ft
⛈️ TCU: Towering Cumulus
🌩️ CB: Cumulonimbus
+Nh: Hours from now%: Probability of occurrenceAGL: Above Ground Level

Forecast Periods

BASE
MVFR
Wind
230° at 7 kt
Visibility
>6SM
Clouds
BKN013 BKN040
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (230°) at 7 kt. Visibility will be excellent at more than 6SM. Broken clouds at 1300 feet, Broken clouds at 4000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 12:00Z - 16:00Z
VFR
Clouds
SCT015
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Scattered clouds at 1500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM221600 16:00Z - 22:00Z
VFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
SCT015 SCT040
📖 Plain English Explanation:

Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 1500 feet, Scattered clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM222100 21:00Z - 03:00Z
VFR
Wind
250° at 11 kt
Visibility
>6SM
Clouds
SCT250
📖 Plain English Explanation:

Winds from the West-Southwest (250°) at 11 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM230500 05:00Z - 11:00Z
VFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
FEW250
📖 Plain English Explanation:

Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Few clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

📚 Understanding TAF Forecasts

Terminal Aerodrome Forecast (TAF) provides detailed weather forecasts specifically for aviation operations. Our system translates complex meteorological codes into plain English to help pilots of all experience levels understand forecasted conditions.

What TAF Includes:

  • • Wind direction, speed, and gusts
  • • Visibility in statute miles or kilometers
  • • Weather phenomena (rain, snow, fog, thunderstorms)
  • • Cloud coverage types and altitudes
  • • Forecast changes with timing
  • • Flight rules categories (VFR/IFR)

Change Indicators Explained:

  • BASE - Main forecast conditions
  • FM - Permanent change from specific time
  • BECMG - Gradual change over 2-4 hours
  • TEMPO - Temporary changes (less than 1 hour)
  • PROB30/40 - 30% or 40% probability

🛩️ Flight Rules Categories

VFR

Visual Flight Rules

  • • Ceiling ≥ 3000 ft
  • • Visibility ≥ 5 miles
  • • Good for visual flying

MVFR

Marginal VFR

  • • Ceiling 1000-3000 ft
  • • Visibility 3-5 miles
  • • Caution for VFR

IFR

Instrument Flight Rules

  • • Ceiling 500-1000 ft
  • • Visibility 1-3 miles
  • • Instruments required

LIFR

Low IFR

  • • Ceiling < 500 ft
  • • Visibility < 1 mile
  • • Challenging conditions

💡 TAF Reading Tips

For Student Pilots:

  • • Focus on the plain English explanations above
  • • Pay attention to flight rules categories
  • • Look for wind direction relative to runway headings
  • • Check for temporary conditions (TEMPO)

For Experienced Pilots:

  • • Cross-reference with raw TAF for precise timing
  • • Consider probability forecasts for alternate planning
  • • Monitor BECMG periods for gradual changes
  • • Always check current METAR vs TAF forecast

Important: TAF forecasts should always be supplemented with current METAR observations, PIREPs, and other weather information for complete situational awareness. Weather can change rapidly, and forecasts have inherent limitations.