Skip to content

Air Quality Alert Message

Status

Issued Active alert

Start Time

Thu 07/16/2026 04:40 PM EDT

End Time

Sat 07/18/2026 12:00 AM EDT

Impacts

Informational

Full Alert Message

Air Quality Alert Message MD Dept of Environment and VA Dept of Environmental Quality Relayed by National Weather Service Baltimore MD/Washington DC 440 PM EDT Thu Jul 16 2026 ...AIR QUALITY ALERT IS IN EFFECT FOR FRIDAY JULY 17 2026... The Maryland Department of the Environment has issued a Code RED Air Quality Alert Friday for the Maryland Piedmont region. A Code Red Air Quality Alert means that air pollution concentrations within the region are unhealthy for the general population. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

Technical Header

MDZ004-005-503-505-180400- Frederick-Carroll-Northwest Montgomery-Northwest Howard- 440 PM EDT Thu Jul 16 2026