LAS VEGAS (KSNV) — Smoke drifting into Clark County from coastal California wildfires has prompted local air quality officials to issue a smoke advisory for Sunday, warning residents that pollution levels are expected to rise.

Clark County’s Division of Air Quality said forecasters expect the incoming smoke to increase particulate matter pollution across the region. Officials urged residents to take precautions, noting that smoke contains small particulates and other pollutants that can aggravate respiratory diseases and contribute to ground-level ozone formation.

Health impacts can extend beyond those with existing conditions. Exposure to smoke can cause coughing, wheezing and shortness of breath even in healthy people.

The Environmental Protection Agency says people who may be most sensitive to elevated levels of particulates and ozone include individuals with respiratory problems, cardiac disease, young children and senior citizens. People with medical conditions that make them sensitive to air quality conditions should consult their physician.

To limit personal exposure, residents are advised to stay indoors when they see or smell smoke, keep windows and doors closed, and limit outdoor exertion on days with high levels of fine particulates.

Officials noted that exercise can make people breathe heavier and increase the amount of particulates they are likely to inhale. Residents may also want to change indoor air filters if they are dirty.