Wisconsin school sports heat policy
WIAA gives Wisconsin schools a model heat policy built on the heat index; it names WBGT devices but attaches no WBGT limits to them. How to read these labels
- Association
- WIAA (Wisconsin Interscholastic Athletic Association)
- Label
- No statewide WBGT rule
- Reading it uses
- Heat index
- Statewide table
- None
- Last checked
- September 5, 2026
What WIAA’s document says
WIAA runs on heat index, not WBGT. Its model policy has schools take temperature and humidity readings 30 minutes before an activity and again 60 minutes in, recorded in writing, and it names “A digital sling psychrometer or Wet Bulb Globe Thermometer” as acceptable devices without attaching any WBGT thresholds to them. There is no statewide WBGT rule for us to show.
We won’t show another state’s WBGT thresholds in its place: regional tables differ by several degrees. Follow the policy your school, district or league has adopted. For general heat guidance at your field, open the map.
WIAA Model Policy for Managing Heat & HumidityThis is a plain-language summary to help you plan. It is not legal advice, and it is not the association’s document. Associations revise these policies often. Confirm what currently applies with your school, district or association.
What else to know
- Above a heat index of 99, WIAA’s model policy lists “Mandatory water breaks every 30 minutes for 10 minutes in duration.” Above 104, it says to stop all outside activity, and inside activity too if air conditioning is unavailable.
- WIAA says each school should designate who takes and records the readings, generally its athletic director, head coach or athletic trainer.
- Football heat acclimatization is covered separately, in WIAA’s Football Season Regulations.
How to read this
We found no WBGT limits in WIAA’s document. It uses the heat index instead, so there is no WBGT table to show. Your school or district may also have its own heat policy.
Before you rely on this
- This page summarizes WIAA’s document. It does not replace it. If they differ, go by the document and by the policy your school or league has adopted.
- Confirm what currently applies with your school, district or association. Many schools adopt their own version.
- Any WBGT number WetBulbTracker shows is a modeled estimate for planning, not an official reading. Where a policy calls for an on-site reading, that reading governs.
- This page does not replace an athletic trainer’s judgment.
Live heat readings in Wisconsin
Suggest a correction
Associations update these documents, often before the fall season. If something here is wrong or out of date, send us a link to the current document and we will re-check it.
Suggest a correction