Tuesday, February 19h, 2019 through Monday, February 25th, 2019
PM-2.5: 24-hour Fine Particulate concentrations will be generally Good to Low Moderate through the forecast period.
This forecast week will be featured by two primary weather systems. As high pressure moves out of the region during Tuesday, an approaching system will provide active weather for Wednesday. Low Moderates observed on Tuesday, courtesy of the retreating dome of high pressure, will be flushed out as this system passes through during Wednesday. Westerly winds from the retreating system will provide Good Air Quality for Thursday.
The best chance for any Low Moderates, during the forecast period, will be Friday into Saturday as the Midwest settles under another dome of high pressure. Calm winds, plus a melting snow pack, will be prime for stagnating air and fine particulate creep.
A stronger system comes through on Sunday to flush out any persisting fine particulates.
Air Quality is expected to remain mostly Good going into the next work week.