EUGENE, Ore. — With the developing heatwave across the region, the Lane Regional Air Protection Agency (LRAPA) is issuing an air quality advisory beginning Saturday, Aug. 23, 2025, for the Eugene/Springfield metropolitan area due to elevated levels of ozone pollution, or smog, the agency reports.
LRAPA expects the smog air quality advisory due to remain until 10 p.m. Monday, Aug. 25.
“The combination of heat, sunshine, and minimal wind are prime conditions for the formation of ground-level ozone, the main component of smog,” said Matt Sorensen, Public Affairs Manager for LRAPA.
Residents, especially those in sensitive groups, are encouraged to take precautions to protect their health during this advisory. Sensitive groups include children, older adults, anyone pregnant, and people with lung or heart conditions. When ozone levels are elevated, these individuals should limit prolonged outdoor exertion, particularly in the afternoons and early evenings when ozone concentrations tend to peak.
To help reduce the formation of ozone pollution, LRAPA recommends:
Limit driving by using public transit, carpooling or other alternative transportationAvoid unnecessary engine idlingRefuel vehicles during cooler evening hoursPostpone using gas-powered mowers or yard equipment until cooler periods of the dayAvoid using aerosol sprays or oil-based paints
LRAPA says smog forms when hot temperatures, direct sun, and low winds combine with exhaust from cars, gas-powered engines and chemicals in paints and aerosols. These air pollutants react with sunlight and heat to produce smog (ozone) and haze.
“Ozone irritates the eyes, nose, and lungs and can worsen conditions like asthma and COPD,” the agency says. “If you experience coughing, chest pain, shortness of breath or other respiratory symptoms, consult your healthcare provider.”
This ozone advisory for the Eugene/Springfield area is expected to remain in effect until cooler temperatures and improved ventilation conditions arrive, likely Tuesday morning.