Smoke from the West Coast wildfires will drift back to Colorado on Tuesday, bringing moderate to unhealthy ozone levels to patients with asthma and other lung diseases along the Front Range.
Due to the smog, the Colorado Department of Public Health and Environment also issued air quality health advisories in the northern and western regions of the state. The announcement began on Tuesday morning and will expire at 9 AM on Wednesday.
In Front Range, active children and adults, as well as people with lung diseases (such as asthma), should reduce long or heavy outdoor activities until 10pm on Tuesday night. The concentration of fine particles is expected to be moderate on Tuesday, and visibility in Denver is expected to be very poor to very poor.
CDPHE said it expects the concentrations of carbon monoxide and nitrogen dioxide to be in a good category within the frontier range on Tuesday.
Statewide, health agencies placed 21 counties (from Ouray and San Miguel to Moffat and Rio Branco to Jackson and Eagle) under air quality health consultations until Wednesday morning . Cities consulted include Craig, Steamboat Springs, Meeker, Hot Sulphur Springs, Glenwood Springs, Vail, Grand Junction and Durango.
Health officials warned nearby people with heavy smoke to stay indoors. This is especially true for those who suffer from heart disease, respiratory diseases, and are very young and old. If the visibility is less than 5 miles, it means that the smoke has reached unhealthy levels.