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Table 7-7: Air
Pollution in the 50 Largest Metropolitan Areas: 1999-2005
(Number of days with AQI values greater than 100)
Excel | CSV
| Atlanta, GA |
73 |
39 |
24 |
20 |
12 |
11 |
11 |
| Austin-San Marcos, TX |
8 |
6 |
0 |
5 |
3 |
2 |
1 |
| Baltimore, MD |
41 |
23 |
33 |
42 |
20 |
16 |
27 |
| Boston, MA-NH |
3 |
0 |
3 |
7 |
6 |
1 |
1 |
| Buffalo-Niagara Falls,
NY |
8 |
5 |
13 |
22 |
8 |
0 |
9 |
| Chicago, IL |
19 |
13 |
33 |
23 |
10 |
9 |
23 |
| Cincinnati, OH-KY-IN |
18 |
15 |
15 |
31 |
10 |
4 |
14 |
| Cleveland-Lorain-Elyria,
OH |
36 |
21 |
29 |
30 |
17 |
18 |
25 |
| Columbus, OH |
24 |
12 |
14 |
21 |
9 |
1 |
8 |
| Dallas, TX |
16 |
20 |
14 |
7 |
5 |
9 |
10 |
| Denver, CO |
3 |
2 |
8 |
7 |
16 |
0 |
1 |
| Detroit, MI |
23 |
16 |
31 |
28 |
19 |
9 |
23 |
| Fort Lauderdale, FL |
4 |
3 |
3 |
3 |
0 |
0 |
0 |
| Honolulu, HI |
2 |
2 |
2 |
2 |
2 |
2 |
3 |
| Houston, TX |
51 |
42 |
27 |
21 |
31 |
22 |
28 |
| Indianapolis, IN |
23 |
8 |
14 |
24 |
11 |
1 |
18 |
| Jacksonville, FL |
2 |
1 |
3 |
0 |
0 |
0 |
3 |
| Kansas City, MO-KS |
3 |
10 |
6 |
7 |
11 |
0 |
10 |
| Las Vegas, NV-AZ |
0 |
0 |
1 |
2 |
3 |
1 |
2 |
| Los Angeles-Long Beach,
CA |
54 |
63 |
81 |
81 |
88 |
65 |
45 |
| Louisville, KY-IN |
47 |
15 |
18 |
28 |
12 |
3 |
17 |
| Memphis, TN-AR-MS |
35 |
28 |
15 |
17 |
9 |
2 |
12 |
| Miami, FL |
7 |
2 |
1 |
1 |
1 |
3 |
1 |
| Milwaukee-Waukesha, WI |
18 |
5 |
21 |
11 |
9 |
6 |
17 |
| Minneapolis-St. Paul,
MN-WI |
0 |
4 |
6 |
1 |
1 |
0 |
2 |
| New Orleans, LA |
18 |
20 |
6 |
2 |
8 |
5 |
4 |
| New York, NY |
22 |
19 |
21 |
26 |
14 |
6 |
15 |
| Norfolk-VA Beach-Newport
News, VA-NC |
17 |
5 |
7 |
15 |
4 |
2 |
1 |
| Oklahoma City, OK |
4 |
7 |
2 |
3 |
3 |
0 |
2 |
| Orlando, FL |
4 |
3 |
4 |
1 |
0 |
0 |
5 |
| Philadelphia, PA-NJ |
32 |
21 |
35 |
35 |
20 |
14 |
26 |
| Phoenix-Mesa, AZ |
9 |
11 |
7 |
8 |
8 |
1 |
4 |
| Pittsburgh, PA |
40 |
32 |
55 |
50 |
37 |
39 |
48 |
| Portland-Vancouver,
OR-WA |
5 |
7 |
3 |
6 |
0 |
3 |
4 |
| Providence-Fall
River-Warwick, RI-MA |
3 |
0 |
1 |
3 |
3 |
0 |
1 |
| Richmond-Petersburg, VA |
21 |
5 |
12 |
21 |
3 |
1 |
6 |
| Riverside-San
Bernardino, CA |
121 |
144 |
156 |
146 |
138 |
118 |
103 |
| Sacramento, CA |
56 |
41 |
46 |
57 |
35 |
26 |
39 |
| St. Louis, MO-IL |
31 |
20 |
20 |
34 |
13 |
2 |
29 |
| Salt Lake City-Ogden, UT |
13 |
20 |
27 |
33 |
10 |
37 |
26 |
| San Antonio, TX |
9 |
0 |
0 |
17 |
4 |
4 |
3 |
| San Diego, CA |
33 |
31 |
30 |
20 |
20 |
16 |
7 |
| San Francisco, CA |
2 |
3 |
5 |
1 |
0 |
0 |
0 |
| San Jose, CA |
17 |
20 |
12 |
9 |
6 |
2 |
6 |
| Seattle-Bellevue-Everett,
WA |
6 |
7 |
6 |
6 |
2 |
1 |
1 |
| Tampa-St.
Petersburg-Clearwater, FL |
10 |
8 |
4 |
0 |
5 |
0 |
4 |
| Tucson, AZ |
7 |
0 |
0 |
3 |
1 |
0 |
2 |
| Tulsa, OK |
13 |
10 |
6 |
5 |
7 |
0 |
4 |
| Washington, DC-MD-VA-WV |
42 |
22 |
28 |
34 |
13 |
10 |
19 |
| West Palm Beach-Boca
Raton, FL |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
KEY: AQI = Air Quality Index; U = data are not available.
NOTES: The Air Quality Index (AQI)
integrates information on 6 major pollutants (particulate matter less than 10
microns in diameter, particulate matter less than 2.5 microns in diameter,
sulfur dioxide, carbon monoxide, ozone, and nitrogen dioxide) across an entire
monitoring network into a single number that represents the worst daily air
quality experienced in an urban area. An AQI greater than 100 indicates that
at least 1 criteria pollutant exceeded air quality standards on a given day;
therefore, air quality would be in the unhealthful range on that day.
SOURCE: U.S. Environmental
Protection Agency, Office of Air and Radiation, Air Trends, Factbook and
Related Information, available at http://www.epa.gov/airtrends/ as of Oct.
23, 2006.
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