FORECAST SUMMARY:
Monday, December 23rd, 2019 through Monday, December 30th, 2019
PM-2.5: 24-hour average Fine Particulate concentrations will be mostly Low Moderate until the weekend, then Good conditions return.
FORECAST DISCUSSION
Mild weather will continue through the Christmas week despite the passage of a weak cold front Monday afternoon. The warmer, moist air over the colder ground has created a nice stable atmosphere for fine particulates to form and stay close to the ground.
High pressure will move over the region, during Tuesday, with southerly winds returning late in the day. The continued warmer weather and moist conditions will keep the majority of the state in the Low Moderate range.
The current weather models are showing a front moving through the region around the Friday time frame, although confidence is somewhat shaky on the timing. When the front does pass, northwest winds should clean the atmosphere and return conditions to the Good range.
EXTENDED FORECAST:
Air Quality should be mostly Good going into the next work week.