The Oregon Department of Environmental Quality has raised the alarm over rising ozone pollution in the Portland metro area. An air quality advisory has been put in place, cautioning the public about smog levels that are likely to impact the region through Saturday evening. According to a release on DEQ's website, sensitive groups including children, the elderly, and those with heart or respiratory issues are advised to reduce outdoor activities.

The DEQ indicated that this advisory is expected to last until 8 p.m. on August 10, due to smog that could prove to be unhealthy for these sensitive populations. In efforts to quickly mitigate the risk, officials recommend that people not only limit their exposure outdoors but also take actions to decrease pollution. Among these actions, they urge residents to limit driving, appealing to the public to instead use public transit or carpooling to help reduce the impact on the environment.

Further steps include avoiding unnecessary engine idling, refueling vehicles during the cooler evening hours to minimize the emissions during periods of high ozone formation, and postponing activities such as yard work that involves gas-powered equipment. Other postponements recommended are painting projects or the use of any aerosol sprays that contribute to air quality degradation.

Ozone pollution is a significant concern during the summer period when temperatures soar, and winds stay low. Compounded by emissions from vehicles and industrial activities, these conditions form a perfect storm to significantly increase smog levels. The DEQ warns that while air quality monitors may show acceptable levels in the morning, the scenario can quickly escalate to become unsafe later in the day. The advisory highlights that smog is a potent irritant to the eyes, nose, and lungs and can lead to acute respiratory problems. People experiencing worsened symptoms are advised to consult their healthcare provider immediately.

This advisory comes amid a heatwave that's currently gripping the Portland area, drawing attention to the need for public awareness and cooperation in response efforts. It's a reminder of the ongoing challenges faced by urban areas in managing air quality, particularly during times of extreme weather that can further exacerbate these environmental stresses.