DC Activates Heat Alert and Expands Public Safety Measures
Friday, June 12, 2026
(Washington, DC) – Due to high temperatures and humidity levels, Mayor Muriel Bowser has activated an Extreme Heat Alert today, June 12, until 8 pm.
The National Weather Service is forecasting air temperatures over 95 degrees. When combined with high humidity levels, the heat index may exceed 105 degrees at times. Overnight temperatures are expected to drop to 67 degrees.
When the heat index forecast exceeds 105 degrees, the District issues an Extreme Heat Alert and may implement additional resources as needed to support public health and wellness. Temperatures over 95°F can be harmful to those with existing medical conditions and can lead to heat exhaustion and heat stroke. Spending long periods of time outside or participating in outdoor physical activity may lead to heat-related illness or injury. Residents are advised to stay cool, drink plenty of water, and check on seniors and other vulnerable neighbors who may need help.
If you are concerned about neighbors experiencing homelessness, or to access free, accessible transportation to a low-barrier shelter or day center, call the Shelter Hotline at (202) 399-7093 or dial 311.
Heat Alerts and Extreme Heat Alerts
During the spring and summer months, the District issues heat-related alerts when the National Weather Service forecasts weather and high temperatures that present a risk to residents, especially those who are outdoors and experiencing homelessness.
A Heat Alert is triggered when the National Weather Service forecasts a heat index of 95°F or above in the District.
An Extreme Heat Alert is triggered when the National Weather Service forecasts a heat index of 105°F or above in the District.
Heat Alerts and Extreme Heat Alerts are shared through AlertDC, the District’s public notification system. Residents and visitors can sign up for free email and text alerts at alert.dc.gov.