As the day wears on, there's more ozone in the air. In the Puget Sound and Portland-Vancouver areas ozone gets to be a problem when high temperatures remain over 80 degrees for more than a day or two. Combine errands and carpool or bus to work. Refuel cars and trucks in the cooler evening hours. Wait for cooler weather to use gas-powered lawn and yard equipment.
Current ozone conditions One-hour average.
They should be fixed sometime today. This data is intended as an indicator of current air quality only. It has not yet been through the quality assurance process and is not considered official. This does not represent the total monitoring effort in Washington State. Pollutants that don't have an Air Quality Index, manual method particulate monitors, monitors in remote locations, and other monitors not connected to the telemetry system are not presented here.