Department of Environmental Quality

DEQ Home

Air Quality Index

The Air Quality Index is a color-coded tool that categorizes air quality. The map below shows the location of DEQ air quality monitoring stations throughout Oregon. Select a station near you by clicking on one of the colored dots.

At-a-Glance
The dots on the map change color depending on the current air quality health level at each station. You can quickly assess statewide air quality based on the color of the dots. The meaning of the colors can be found below the map.

Note: AQI map currecntly works best with Chrome or Firefox browsers.

Map last refreshed on 2/21/2017 at 8:36:06 AM PST
   
AQI Station Map Notes:
  • The data displayed are the most current available.
  • All readings are preliminary and unvalidated. Following final review, all values are subject to change.
  • New AQI readings will be available at approximately 15-20 minutes past the hour. The AQI map will refresh asynchronously at this time.
  • The units ppm and µg/m3 stand for parts per million and micrograms per cubic meter, respectively. Both are used in the measurement of air pollutant concentration.
Air Quality
Rating
Air Quality Index (AQI) PM2.5 1-hour Average (µg/m3) PM2.5 24-hour Average (µg/m3) Ozone 8-hour Average (ppm)

GOOD

0 - 50

0.0 - 40.4

0.0 - 12.0

0.000 - 0.054

MODERATE

51 - 100

40.5 - 80.4

12.1 - 35.4

0.055 - 0.070

UNHEALTHY FOR SENSITIVE GROUPS

101 - 150

80.5 - 175.4

35.5 - 55.4

0.071 - 0.085

UNHEALTHY

151 - 200

175.5 - 300.4

55.5 - 150.4

0.086 - 0.105

VERY UNHEALTHY

201 - 300

300.5 - 500.4

150.5 - 250.4

0.106 - 0.200

HAZARDOUS

>300

>500.5

>250.5

>0.200

Table 1. The Air Quality Index is the EPA's scale for rating air quality

Additional Oregon AQI Resources: