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Airshed charts and summary table can be found here and maps can be found here.
Sunday into next week upper level low pressure influences the weather pattern with cooler temperatures, clouds and lighter winds bring challenging dispersion conditions. POOR dispersion expected with a minor bit of improvement on Wednesday but still POOR to FAIR.
New snow cover in a number of locations is going to further enhance the strength of inversions.
High pressure begins to build over the region on Thursday which brings warm air aloft and traps colder air at the surface continuing the inversion activity.
Next weekend indicates some ridge breakdown potential for increased winds.
Rebekah McCormick/Dan Borsum - NRCC Meteorologists