Date: Saturday-Monday, September 22-24, 2018
Action Day? No
It will be a mixed weekend weather-wise for the State of Delaware, but Good air quality will be the rule. Saturday will be the more pleasant of the weekend days, with periods of sun. A cold front will move
through the state in the morning, ushering in a seasonably cool and much less humid air mass. The arrival of this clean air on northerly winds will keep ozone and particles in the Good range. Sunday will be
mostly cloudy and cooler, with rain showers likely. Good air quality will continue. Breezy onshore (easterly) winds on Monday will bring clean maritime air flowing into the state, for persistent Good air quality.
Humidity will rebound on Tuesday under continued onshore flow. Cloudy skies and rain showers will extend the period of Good air quality.