Boise, Idaho – Drivers and outdoor workers in southwest Idaho will face dangerous heat and smoky skies Thursday as temperatures climb near 98°F. The combination of stagnant air and smoke could worsen breathing conditions, especially near Boise and along the I-84 corridor. Residents should limit outdoor activity during the afternoon and check on vulnerable neighbors.
According to the National Weather Service in Boise, patchy smoke will linger through Thursday morning before clearing somewhat in the afternoon. Calm winds will leave little relief from poor air quality, while the high near 98°F could challenge late-summer power demand. Officials urge residents to stay hydrated, avoid strenuous activity, and keep windows closed if smoke drifts into homes.
Across Ada and Canyon counties, the hot, dry conditions increase fire danger. Outdoor burning remains discouraged, and drivers should use caution along highways where visibility may briefly drop in smoky areas. Thursday night will bring partly cloudy skies with a low near 66°F.
Friday remains hot, with highs near 93°F before the pattern shifts. Clouds increase Friday night, and showers become possible Saturday. The best chance of rain arrives Saturday night into Sunday, providing a brief taste of fall weather and cooler daytime highs in the mid-80s.
More showers are possible early next week, signaling a gradual transition from late-summer heat toward a more typical September pattern. Additional weather statements may be issued if air quality worsens or if fire risk spikes.
Five Day Forecast for Boise, Idaho
- Thursday: Patchy smoke, hot. High near 98°F. Low 66°F.
- Friday: Mostly sunny, hot. High near 93°F. Low 66°F.
- Saturday: 30% chance of showers. High near 84°F. Low 61°F.
- Sunday: 20% chance of showers. Mostly sunny, high 85°F. Low 60°F.
- Monday: Partly sunny with a 20% chance of showers. High near 80°F. Low 59°F.
