Extreme Heat Warning

Locations Affected

Baltimore, MD ∙ Washington, DC ∙ Alexandria, VA ∙ Rockville, MD ∙ Frederick, MD ∙ Gaithersburg, MD ∙ Bowie, MD ∙ Corriganville, MD ∙ Sykesville, MD ∙ Ringgold, MD

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 757 PM EDT Wed Jul 1 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM EDT THURSDAY... ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM EDT FRIDAY... ...HEAT ADVISORY WILL EXPIRE AT 8 PM EDT THIS EVENING... * WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. * WHERE...The Washington and Baltimore metropolitan areas including the District of Columbia and city of Baltimore, northeast, central, and southern Maryland, as well as northern Virginia and the Virginia Piedmont. * WHEN...For the first Extreme Heat Warning, from 10 AM to 8 PM EDT Thursday. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

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