Extreme Heat Watch

Locations Affected

Baltimore, MD ∙ Washington, DC ∙ Alexandria, VA ∙ Gaithersburg, MD ∙ Rockville, MD ∙ Frederick, MD ∙ Bowie, MD ∙ Harrisonburg, VA ∙ Redland, MD ∙ Fort Hunt, VA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1027 AM EDT Wed Jul 1 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY EVENING... * WHAT...For the Heat Advisory, heat index values up to 104 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 107 possible. * WHERE...Clarke, Frederick, Page, Shenandoah, Warren, Augusta, and Rockingham Counties. * WHEN...For the Heat Advisory, until 8 PM EDT this evening. For the Extreme Heat Watch, from Thursday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

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