Weather Warnings for Pennsylvania

Issued by the National Weather Service

Current watches, warnings, and advisories for Pennsylvania
Alerts Updated: February 18, 2026, 7:32 am  UTC


Dense Fog Advisory issued February 18 at 2:32AM EST until February 18 at 10:00AM EST by NWS Mount Holly NJ

Summary: * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Much of New Jersey, eastern Pennsylvania, Delaware and the eastern shore of Maryland. * WHEN...Until 10 AM EST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
Severity:  Moderate    Effective:  February 18, 2026, 2:32 am      Expires:  February 18, 2026, 10:00 am
Area:  New Castle; Kent; Inland Sussex; Delaware Beaches; Kent; Queen Anne's; Talbot; Caroline; Sussex; Warren; Morris; Hunterdon; Somerset; Middlesex; Western Monmouth; Eastern Monmouth; Mercer; Salem; Gloucester; Camden; Northwestern Burlington; Ocean; Cumberland; Atlantic; Cape May; Atlantic Coastal Cape May; Coastal Atlantic; Coastal Ocean; Southeastern Burlington; Carbon; Monroe; Berks; Lehigh; Northampton; Delaware; Philadelphia; Western Chester; Eastern Chester; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower Bucks


Dense Fog Advisory issued February 17 at 10:05PM EST until February 18 at 8:00AM EST by NWS Binghamton NY

Summary: * WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...Until 8 AM EST Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous.
Severity:  Moderate    Effective:  February 17, 2026, 10:05 pm      Expires:  February 18, 2026, 8:00 am
Area:  Northern Oneida; Yates; Seneca; Southern Cayuga; Onondaga; Steuben; Schuyler; Chemung; Tompkins; Madison; Southern Oneida; Cortland; Chenango; Otsego; Tioga; Broome; Delaware; Sullivan; Bradford; Susquehanna; Northern Wayne; Wyoming; Lackawanna; Luzerne; Pike; Southern Wayne


Dense Fog Advisory issued February 17 at 8:13PM EST until February 18 at 10:00AM EST by NWS State College PA

Summary: * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Lancaster and York Counties. * WHEN...Until 10 AM EST Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...At 8 PM, dense fog was reported near the Pennsylvania-Maryland border. Dense fog is expected to expand northward tonight.
Severity:  Moderate    Effective:  February 17, 2026, 8:13 pm      Expires:  February 18, 2026, 10:00 am
Area:  York; Lancaster


Air Quality Alert issued February 17 at 3:45PM EST by NWS Mount Holly NJ

Summary: The Delaware Valley Regional Planning Commission has issued a code orange air quality alert Wednesday for The Philadelphia Metro area. A code orange air quality alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children...people suffering from asthma... heart disease or other lung diseases...and the elderly. 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 http://www.phila.gov/health/units/ams/
Severity:  Unknown    Effective:  February 17, 2026, 3:45 pm      Expires:  February 19, 2026, 12:00 am
Area:  Delaware; Philadelphia; Western Chester; Eastern Chester; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower Bucks


Air Quality Alert issued February 17 at 3:45PM EST by NWS Mount Holly NJ

Summary: The Pennsylvania Department of Environmental Protection has issued a code orange air quality alert Wednesday for The Lehigh Valley/Berks County area. A code orange air quality alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children...people suffering from asthma... heart disease or other lung diseases...and the elderly. 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 http://www.depweb.state.pa.us
Severity:  Unknown    Effective:  February 17, 2026, 3:45 pm      Expires:  February 19, 2026, 12:00 am
Area:  Berks; Lehigh; Northampton


Air Quality Alert issued February 17 at 3:30PM EST by NWS State College PA

Summary: The Pennsylvania Department of Environmental Protection has issued a Code ORANGE Air Quality Alert on Wednesday for the Susquehanna Valley. A Code ORANGE Air Quality Alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children, people suffering from asthma, heart disease or other lung diseases, and the elderly. 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 http://www.airnow.gov and http://www.aqpartners.state.pa.us.
Severity:  Unknown    Effective:  February 17, 2026, 3:30 pm      Expires:  February 19, 2026, 12:00 am
Area:  Dauphin; Lebanon; Cumberland; York; Lancaster