Extreme Heat Watch District Of Columbia County, District of Columbia issued June 22 at 1:03AM EDT until June 23 at 9:00PM EDT Baltimore MD/Washington DC / Expired & Archived Alert

Extreme Heat Watch in District Of Columbia County, District of Columbia

Issued by the National Weather Service and archived by Claims Pages

EXPIRED 6/22/2025 1:03:00 AM (UTC) Urgency: Future Severity: Severe Certainty: Likely

6/22/2025 1:03:00 AM until 6/22/2025 9:15:00 AM

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...For the Heat Advisory, heat index values up to 105 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. * WHERE...In Maryland, Northwest Montgomery and Frederick MD Counties. In Virginia, Eastern Loudoun and Western Loudoun Counties. * WHEN...For the Heat Advisory, from noon today to 8 PM EDT this evening. For the Extreme Heat Watch, from Monday morning through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.