Airshed
Management
System

Airshed charts and summary table can be found here.

Strong low pressure off the PacNW coast will drive a moist southwesterly flow into ID and western MT. This brings extensive cloud cover and rain off and on through the weekend. With cool temperatures disperson in these areas will be generally POOR to FAIR. 

For the rest of the area its a more unstable and breezier pattern for GOOD to EXCELLENT dispersion through the weekend. 

Dan Borsum - NRCC Meteorologist

Airshed charts and summary table can be found here.

Southwesterly flow aloft with strong moisture transport will continue to bring unsettled weather to northern and central ID and western MT. This will keep POOR to FAIR conditions through Sunday with limited sunshine and poor surface mixing with cooler temperatures. 

Further south in southern ID and across southwest, central and eastern MT, the airmass will be unstable most days with better mixing of winds with GOOD to VERY GOOD dispersion through Sunday.