Portland’s ozone season runs from May through September, when the city experiences an average of 51 days over 80 degrees. Track air pollution now to help plan your day and make healthier lifestyle decisions. 2 As temperatures continue to rise as a result of climate change, it will be increasingly difficult to manage ozone levels. Portland, for example, can be adversely affected by Seattle air quality, Bend air quality, or Eugene air quality. Portland, Oregon overall air quality index is 60 Portland, Oregon PM 2.5 (fine particulate matter) AQI is 60 - Portland, Oregon PM 10 (respirable particulate matter) AQI is n/a - Portland, Oregon NO 2 (nitrogen dioxide) AQI is 11 - Portland, Oregon SO 2 (sulfur dioxide) AQI is 2 - Portland, Oregon O 3 (ozone) AQI is 0 - Portland, Oregon CO (carbon monoxide) AQI is 0 - Portland's air currently meets all federal air quality health standards. These standards exist for six pollutants known as the criteria pollutants (carbon monoxide, ozone, particulate matter (PM 2.5 and PM 10), nitrogen oxides, sulfur oxides and lead. Pollen and Air Quality forecast for Portland, OR with air quality index, pollutants, pollen count and pollution map from Weather Underground. The criteria pollutants of most concern in Portland are ozone and fine particulate matter. Localized Air Quality Index and forecast for Portland, OR. Air Quality gives information using weather conditions, pollutants and research from weather.com
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