Excessive Heat Watch

November 11, 2025

To our campus partners:

The Excessive Heat Watch will be in effect today as the outdoor high temperature for Irvine, CA is forecasted to be 82°. If you or your staff will be working outdoors, please implement the procedures listed in the Work Planning and Site Checklist. Only implement “High Heat” procedures when and if the outdoor temperature reaches 95° Fahrenheit.

October 29-30, 2025

To our campus partners:

The Excessive Heat Watch will be in effect from TODAY, Wednesday, October 29 through Thursday October 30, 2025, as the outdoor high temperature is forecasted to be 84°for Irvine. If you or your staff will be working outdoors during this period, please implement the procedures listed in the Work Planning and Site Checklist. You will need to implement the “High Heat” procedures when and if the outdoor temperature reaches 95° Fahrenheit.

October 20, 2025

To our campus partners:

The Excessive Heat Watch will be in effect from today, Monday, October 20th, 2025, as the outdoor high temperature is forecasted to be 80°and above Fahrenheit for Irvine. If you or your staff will be working outdoors during this period, please implement the procedures listed in the Work Planning and Site Checklist. Please make sure that you and your staff are aware of the UCI heat illness prevention procedures. Stay hydrated and observe and follow best practices for preventing heat illness.

Please make sure that you and your staff are aware of the UCI heat illness prevention procedures. Stay hydrated and observe and follow best practices for preventing heat illness. Also remember that new staff must be closely observed by a supervisor or designee for the first 14 days of the employee's employment.

The Environmental Health & Safety Office will continue to monitor for warm weather and share any accompanying heat advisories shared by the Orange County Health Care Agency.