As an inversion continues to trap pollutants in the Treasure Valley, the Department of Environmental Quality has issued a yellow air quality alert for Tuesday.
The Air Quality Index is forecast to be 63.
A yellow, or "moderate," alert indicates that the air quality is acceptable, but a small number of people could experience respiratory issues if they are sensitive to certain pollutants.
When the AQI reaches 60 or above, all open outdoor burning is prohibited in Ada County and the cities within by municipal and county ordinance, and in the incorporated cities within Canyon County by municipal ordinance. All open outdoor burning is prohibited in unincorporated portions of Canyon County when the AQI reaches 75 or above.
Hazy conditions are expected to stick around through Thanksgiving, with the National Weather Service predicting highs in the upper 40s and lows around 30.