As of 5:40 a.m. Thursday, March 5, 2026, Philadelphia International Airport (KPHL) was reporting cloudy skies, about 45°F, and very high humidity, a soggy, fog-locked start to the day. Patchy to locally dense fog is cutting visibility in low-lying neighborhoods and along the Delaware and Schuylkill river corridors. Light rain is spreading across the metro area and is set to keep the morning commute slow and damp.
Morning Commute
Rain is likely before 7 a.m., with periods of steady light rain and patchy fog during the key 7 to 10 a.m. commute window. Conditions should gradually shift to mostly fog and drizzle by midday. Northeast winds will stay on the lighter side but may gust up to around 25 mph at times, so expect slick roads and fluttering umbrellas rather than any torrential downpours. Plan on a slower ride on SEPTA and regional routes, and keep headlights on low beams when visibility drops.
Tonight And Friday
Another wave of rain moves in late Thursday and Thursday night, bringing widespread fog and a low near 39°F. Periods of rain and fog may further reduce visibility toward dawn Friday. The end of the workweek stays dreary, with Friday expected to be mostly cloudy with areas of fog, drizzle, or a few showers and a high near 47°F as a backdoor front hangs just to the south of the region. The National Weather Service Mount Holly continues to flag patchy dense fog through Friday and has extended a Dense Fog Advisory for coastal waters until 6 p.m. Thursday, so mariners are urged to use caution and keep up with official notices.
Weekend Warm-Up
Conditions turn much milder this weekend. Highs jump to around 60°F on Saturday and into the mid 60s on Sunday as a warmer air mass settles in, though there is a better chance for showers late Saturday night into Sunday. Early next week looks even more springlike, with forecast highs reaching the 70s by Tuesday and Wednesday. Outdoor plans will feel a lot more comfortable, but scattered showers and, at times, breezy conditions will tag along with the warm-up.
What To Do
On Thursday, treat bridges, overpasses, and shaded streets as especially slick in low visibility and stick with low beams in fog. Boaters should note the marine dense fog advisory, and coastal pilots and other mariners should check the latest marine forecasts before heading out. If you are flying or taking SEPTA, keep an eye on airline and transit alerts for delays and build in extra travel time so a slow roll through the fog does not cost you a connection. For a look at how similar conditions set up earlier this week, see how fog swallowed Philly's morning rush.
