Orange County
| HIGH OZONE DAYS |
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| Ozone Grade: |
F |
| Weighted Average: |
10.5 |
| Orange Ozone Days: |
27 |
| Red Ozone Days: |
3 |
| Purple Ozone Days: |
0 |
| PARTICLE POLLUTION - 24 Hour |
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| Grade: |
F |
| Weighted Average: |
12.2 |
| Orange Particle Days: |
35 |
| Red Particle Days: |
1 |
| Purple Particle Days: |
0 |
| PARTICLE POLLUTION - Annual |
|
| Grade: |
Pass |
| Design Value |
14.4 |
| GROUPS AT RISK |
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| Pediatric Asthma: |
69,658 |
| Adult Asthma: |
167,815 |
| Chronic Bronchitis: |
74,630 |
| Emphysema: |
35,414 |
| Cardiovascular Disease: |
777,475 |
| Diabetes: |
165,540 |
| Total Population: |
2,997,033 |
| Population Under 18: |
766,234 |
| Population 65 & Over: |
331,797 |
American Lung Association State of the Air: 2009NOTES
1. The Weighted Average was derived by adding the three years of individual level data (2005-2007), multiplying the sums of each level by the assigned standard weights ( i.e. 1=orange, 1.5=red, 2.0=purple and 2.5=maroon) and calculating the average.
a. Asterisk (*) indicates incomplete monitoring data for all three years. Therefore, those counties are excluded from the grade analysis or received an Incomplete.
b. A dash (-) indicates that data on that particular pollutant is not collected in that county.
c. Grades are as follows: A=0.0, B=0.3-0.9, C=1.0-2.0, D=2.1-3.2, F=3.3+.
2. The Design Value is the calculated concentration of a pollutant based on the form of the National Ambient Air Quality Standard, and is used by EPA to determine whether the air quality in a county meets the standard. The source for the Design Values is EPA, communication from the Office of Air Quality Planning & Standards, Mark Schmidt, October 31, 2007.
More about Methodology.
