The Treasure Valley has already hit both yellow and orange air quality alerts this week, meaning moderate to unhealthy levels of pollution.
And Ketchum is in the red, meaning very unhealthy levels.
The American Lung Association says wildfire smoke is dangerous for people with respiratory problems such as asthma, chronic obstructive pulmonary disease and heart disease.
Even if you are healthy, the ALA says you can still have an increased risk of respiratory tract irritation, including bronchitis and worsening asthma.
Here are some tips to stay healthy: Stay inside as much as possible with doors, windows and fireplace dampers shut, and use the re-circuation setting on your air conditioner.
If you're driving through smoky areas, keep your car windows and vents closed and the air conditioner to re-circulate.
Avoid exercising outdoors, especially if you experience eye or throat irritation.