Airshed
Management
System

Airshed charts and summary table can be found here and maps can be found here.

Pre frontal environment brings GOOD to EXCELLENT dispersion all areas Thursday

Friday north ID and northwest MT slip into POOR to FAIR dispersion as cooler air and clouds limit surface mixing. Other areas still enough wind for GOOD to EXCELLENT dispersion. 

POOR to FAIR dispersion widespread north ID and most of MT on Saturday as clouds and precip and light winds limit mixing, central and southern ID will more sunshine with unstable conditions for GOOD to EXCELLENT dispersion. Still breezy over parts of southwest MT for FAIR to GOOD dispersion. 

Sunday dispersion worsens for most areas but still remains GOOD to VERY GOOD southern ID.   

Dan Borsum - NRCC Meteorologist