textproduct: Boise

UPDATE

Updated aviation discussion.

KEY MESSAGES

- Smoky conditions continue through the week.

- Warming this week brings temperatures above 100 degrees by Thursday.

- Increased winds Friday through the weekend.

SHORT TERM /Through Wednesday Night/

Issued 214 PM MDT MON AUG 3 2026 Winds today and tomorrow afternoon remain breezy in south- central Idaho before weakening in the midweek. High pressure building over the southwestern US will bring a steady warming trend through the short term. Temperatures climb from 5 degrees below normal to 5-10 degrees above normal by the end of the short term. Northwest flow aloft is carrying elevated smoke from Washington and northeast Oregon into parts of our forecast area tonight. Combined with smoke from the Tartar fire, much of SE Oregon and SW Idaho is forecast to see degraded air quality and visibility through the week.

LONG TERM /Thursday through Monday/

Issued 214 PM MDT MON AUG 3 2026 will reamplify over the area and bring warmer conditions. Temperatures will be 5-10 degrees above normal with lower valleys near 100 degrees Thursday through Saturday. Smoky conditions will continue from area wildfires which may keep temperatures slightly cooler than forecast. Conditions will remain dry and breezy.

AVIATION /00Z Tuesday through Wednesday/

Issued 515 PM MDT MON AUG 3 2026

Reduced visibility due to wildfire smoke, with areas of MVFR-IFR and mountain obscuration. Surface winds: W-N 5-15 kt, then variable up to 12 kt overnight. Except NW 10-15 kt with gusts to 20-25 kt between KBKE-KONO late evening through early AM. Winds aloft at 10kft MSL: NW-W 5-20 kt.

KBOI...Low VFR visibility from smoke, expected to degrade to MVFR-IFR after Tue/02Z. Surface winds: NW 6-12 kt. Evening gusts around 20 kt. Then, variable or southerly 3-6 kt after sunset.

BOI WATCHES/WARNINGS/ADVISORIES

ID...Air Quality Alert until 2 PM MDT Friday for IDZ011>015-028-029- 033. OR...Air Quality Alert until 1 PM MDT /noon PDT/ Tuesday for ORZ061>064.