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Right now in Austin: 82.0° WBGT, Yellow

Heat Rules, Handled On The Sideline.

Free WBGT and smoke safety for every outdoor practice in Texas. Plan the session, run the 30-minute rechecks and keep the record your athletic director needs.

Check Conditions NowSet Up Your TeamTry The Demo Team

Since August 1, 2026, Texas UIL requires WBGT monitoring for every outdoor athletic practice and marching band rehearsal.

WarriorHacks 2.0 Built for WarriorHacks 2.0: an issue in our community, county, state and nation.

Built On Official Rules And Open Data

  • Texas UIL
  • NFHS
  • National Weather Service
  • Open-Meteo
  • Korey Stringer Institute
  • EPA AirNow

One Tool For The Whole Practice.

From the night before to the signed log, Flagline turns the UIL chart into a plan your staff can follow in five seconds.

Plan
Hour by hour flags for the next week, from two independent forecasts. Find the window where practice can run in full.

Austin, UIL Class 3

Run
Practice Mode counts down to every required reading, schedules the breaks and updates the rules the moment the level rises.
Orange87.6°

Next Reading In

29:41

Protect
Athletes check in privately. Red flags reach the trainer instantly, and the heat stroke protocol is one tap away.
Prove
Every reading, break and change is recorded into a signed, bilingual practice log for the athletic director.
TimeWBGTFlag
3:38 PM87.6°Orange
4:15 PM87.2°Orange
4:45 PM86.3°Yellow

Why This Matters In Texas.

Exertional heat stroke is the leading preventable cause of death in high school football. It is also almost always survivable when cooling starts within minutes.

Heat illnesses among US high school athletes each year (CDC)
9,237
Between required WBGT readings during practice (UIL)
30 min
Independent forecasts behind every number we show
2
For every school, coach and athlete
$0

How Flagline Works.

Deterministic rules for anything safety critical. Calibrated AI only where plain words need to become typed facts.

  1. 01
    Two Forecasts, One Honest Number
    We compute WBGT with the Liljegren physics model on Open-Meteo data and compare it with the National Weather Service forecast. The flag always uses the higher one.
  2. 02
    The UIL Chart, As Tested Code
    Class 2 and Class 3 thresholds, break rules, football gear and the red flag conditioning ban are versioned data with hundreds of conformance tests.
  3. 03
    Your Reading Wins
    Forecasts plan the day. On the field, Flagline asks for a reading before practice and every 30 minutes, and the measured value drives the rules.

The UIL Flags, In Plain Words.

Class 3 values shown (most of Texas, including Austin). Class 2 schools in the Panhandle and South Plains use lower thresholds.

  • Green

    < 82.0° WBGT

    Normal practice with regular breaks.
  • Yellow

    82.0 to 86.9° WBGT

    Caution. Cooling zone required on site.
  • Orange

    87.0 to 90.0° WBGT

    Two hours max. Limited football gear.
  • Red

    90.1 to 92.0° WBGT

    One hour max. No pads, no conditioning.
  • Black

    ≥ 92.1° WBGT

    No outdoor practice. Delay until cooler.

Questions Coaches Ask.

Keep The Game On, Safely.

Check your field right now, or run a practice in the demo.

Check Conditions NowTry Practice Mode

Austin forecast at 7:00 PM: NWS 82°, Flagline model 78.7°