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Oregon Department of Environmental Quality

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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.


Map last refreshed on 9/14/2014 at 7:02:30 PM PDT
   
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 - 0.059

MODERATE

51 - 100

40.5 - 80.4

12.1 - 35.4

0.060 - 0.075

UNHEALTHY FOR SENSITIVE GROUPS

101 - 150

80.5 - 175.4

35.5 - 55.4

0.076 - 0.095

UNHEALTHY

151 - 200

175.5 - 300.4

55.5 - 150.4

0.096 - 0.115

VERY UNHEALTHY

201 - 300

300.5 - 500.4

150.5 - 250.4

0.116 - 0.374

HAZARDOUS

>300

>500.5

>250.5

>0.375

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


Additional Oregon AQI Resources:


To hear a recorded message with this same Air Quality Index information call 503-229-6397.

For more information about Air Quality call 503-229-5359 or email.

For more information about DEQ's Laboratory and Environmental Assessment Division please email LEAD.

Oregon Department of Environmental Quality
Headquarters: 811 SW Sixth Ave., Portland, OR 97204-1390
Phone: 503-229-5696 or toll free in Oregon 1-800-452-4011
Oregon Telecommunications Relay Service: 1-800-735-2900  FAX: 503-229-6124

The Oregon Department of Environmental Quality is a regulatory agency authorized to protect Oregon's environment by
the State of Oregon and the Environmental Protection Agency.

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