Yes, those were blue skies you saw in the Treasure Valley on Tuesday, even though the air quality index was technically in the moderate range, with smoke from the Trinity Ridge Fire, and even blazes in California, still sticking around.

What's even better news: Air quality is expected to be better, in the "good" range on Wednesday.

Other parts of the state are not so lucky.

Public health officials are alerting people in Lemhi and Custer counties to stay inside as much as possible to protect themselves from the very unhealthy air.

The Department of Environmental Quality is forecasting very unhealthy levels for the Central Mountain areas of Idaho, particularly the Salmon area. Because of wildfire activity and weather patterns, air quality conditions are not expected to significantly improve in the next few days.

People exposed to smoke may experience coughing and shortness of breath. Older adults, infants, children and people with medical conditions such as asthma, chronic obstructive pulmonary disease, and heart disease are more affected. People who use inhalers for asthma or other conditions should keep them close at hand. Everyone is advised to seek medical treatment for uncontrolled coughing, wheezing, choking, or if breathing difficulty continues once they are indoors. To reduce their exposure to smoke and protect their health, public health officials advise:

• Everyone should avoid heavy work or exercising outdoors when the air quality index reaches unhealthy levels

• Older adults, small children, and those with respiratory conditions or heart disease may be more sensitive to poor air quality and should stay indoors and avoid heavy work when air quality reaches unhealthy levels.

• Stay well-hydrated by drinking plenty of water. Staying hydrated helps dilute phlegm in the respiratory tract, making it easier to cough out smoke particles. Plan to cough; it is nature’s way of clearing your lungs. Avoid caffeine products, sugary drinks and alcohol because they have a dehydrating effect.

• Stay cool if the weather is warm. Run your air conditioner to re-circulate air. Turn the fan blower to manual so it continuously filters the air in your home.

• For homes without a central heating and/or cooling system, use portable air purifiers to remove particles (air purifiers that utilize HEPA filters are best, avoid using air purifiers that produce ozone). Visit areas in your community that have air conditioning, such as a library. In Salmon, residents are encouraged to go to the Salmon Public Library, 204 Main St., or to the Salmon Valley Baptist Church, 1140 N. Cemetery Lane.

• If you wear contact lenses, switch to eyeglasses in a smoky environment.

Not all areas of the state have air quality monitors, so people are encouraged to be cautious if visibility is affected because of smoke and particulates from wildfires. If visibility is reduced to less than eight miles, sensitive groups should limit activity. If visibility is reduced to less than three miles, air quality is considered unhealthy for everyone. Visibility of less than one mile is considered hazardous and everyone should avoid all physical activity outdoors.