Air Quality:
AQI - History
Air Quality Index Values for 3/20/2010 - 2/19/2010
| Date |
Eugene/Springfield |
Oakridge |
| 3/20/2010 |
29 (PM*) - Good |
72 (PM*) - Moderate |
| 3/19/2010 |
35 (PM*) - Good |
55 (PM*) - Moderate |
| 3/18/2010 |
26 (PM*) - Good |
51 (PM*) - Moderate |
| 3/17/2010 |
18 (PM*) - Good |
25 (PM*) - Good |
| 3/16/2010 |
26 (PM*) - Good |
56 (PM*) - Moderate |
| 3/15/2010 |
33 (PM*) - Good |
48 (PM*) - Good |
| 3/14/2010 |
19 (PM*) - Good |
29 (PM*) - Good |
| 3/13/2010 |
14 (PM*) - Good |
34 (PM*) - Good |
| 3/12/2010 |
5 (CO) - Good |
22 (PM*) - Good |
| 3/11/2010 |
12 (PM*) - Good |
26 (PM*) - Good |
| 3/10/2010 |
18 (PM*) - Good |
32 (PM*) - Good |
| 3/9/2010 |
24 (PM*) - Good |
65 (PM*) - Moderate |
| 3/8/2010 |
26 (PM*) - Good |
40 (PM*) - Good |
| 3/7/2010 |
26 (PM*) - Good |
45 (PM*) - Good |
| 3/6/2010 |
51 (PM*) - Moderate |
51 (PM*) - Moderate |
| 3/5/2010 |
31 (PM*) - Good |
27 (PM*) - Good |
| 3/4/2010 |
15 (PM*) - Good |
22 (PM*) - Good |
| 3/3/2010 |
18 (PM*) - Good |
25 (PM*) - Good |
| 3/2/2010 |
17 (PM*) - Good |
56 (PM*) - Moderate |
| 3/1/2010 |
19 (PM*) - Good |
44 (PM*) - Good |
| 2/28/2010 |
24 (PM) - Good |
61 (PM) - Moderate |
| 2/27/2010 |
17 (PM) - Good |
43 (PM*) - Good |
| 2/26/2010 |
12 (CO) - Good |
35 (PM*) - Good |
| 2/25/2010 |
7 (CO) - Good |
17 (PM) - Good |
| 2/24/2010 |
9 (PM) - Good |
34 (PM*) - Good |
| 2/23/2010 |
29 (PM) - Good |
93 (PM*) - Moderate |
| 2/22/2010 |
30 (PM) - Good |
119 (PM) - Unhealthy for Sensitive Groups |
| 2/21/2010 |
27 (PM) - Good |
114 (PM*) - Unhealthy for Sensitive Groups |
| 2/20/2010 |
32 (PM) - Good |
113 (PM*) - Unhealthy for Sensitive Groups |
| 2/19/2010 |
41 (PM) - Good |
94 (PM) - Moderate |
*From Estimated Particulate Matter Concentration
AQI Value and Air Quality Descriptors
| AQI Level |
Numerical Value |
Meaning |
| Good |
0-50 |
Air quality is considered satisfactory, and air pollution poses little or no risk. |
| Moderate |
51-100 |
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. |
| Unhealthy for Sensitive Groups |
101-150 |
Members of sensitive groups may experience health effects. The general public is not likely to be affected. |
| Unhealthy |
151-200 |
Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects. |
| Very Unhealthy |
201-300 |
Health alert: everyone may experience more serious health effects. |
| Hazardous |
301-500 |
Health warnings of emergency conditions. The entire population is more likely to be affected. |