AIR QUALITY INDEX WEATHER NORTHWEST WEATHER OPERATIONS CENTER 1100 AM PST LOCATION: PORTLAND SE LAFAYETTE TIME AQI CATEGORY POLLUTANT ==== === ======== ========= 11AM Thu 32 Good PM2.5 10AM Thu 32 Good PM2.5 9AM Thu 32 Good PM2.5 8AM Thu 32 Good PM2.5 7AM Thu 35 Good PM2.5 6AM Thu 37 Good PM2.5 5AM Thu 38 Good PM2.5 4AM Thu 40 Good PM2.5 3AM Thu 47 Good PM2.5 2AM Thu 55 Moderate PM2.5 1AM Thu 63 Moderate PM2.5 11PM Wed 65 Moderate PM2.5 10PM Wed 59 Moderate PM2.5 9PM Wed 46 Good PM2.5 8PM Wed 33 Good PM2.5 7PM Wed 23 Good PM2.5 6PM Wed 32 Good Ozone 5PM Wed 33 Good Ozone 4PM Wed 33 Good Ozone 3PM Wed 33 Good Ozone 2PM Wed 31 Good Ozone 1PM Wed 31 Good Ozone 12PM Wed 30 Good Ozone 11AM Wed 30 Good Ozone 10AM Wed 29 Good Ozone 9AM Wed 28 Good Ozone 8AM Wed 28 Good Ozone 7AM Wed 29 Good Ozone 6AM Wed 31 Good Ozone 5AM Wed 31 Good Ozone 4AM Wed 31 Good Ozone 3AM Wed 31 Good Ozone 2AM Wed 31 Good Ozone 1AM Wed 31 Good Ozone 11PM Tue 31 Good Ozone 10PM Tue 31 Good Ozone 9PM Tue 31 Good Ozone 8PM Tue 31 Good Ozone 7PM Tue 31 Good Ozone 6PM Tue 31 Good Ozone 5PM Tue 31 Good Ozone 4PM Tue 31 Good Ozone 3PM Tue 31 Good Ozone 2PM Tue 31 Good Ozone 1PM Tue 31 Good Ozone 12PM Tue 31 Good Ozone 11AM Tue 31 Good Ozone 10AM Tue 30 Good Ozone 9AM Tue 30 Good Ozone $$