Quarterly Median		
	Days with	Range	Q1	Q2	Q3	Q4	Annual	Annual	
MSA Name	MSA Code	N	AQI >100	Min	Max	Median	(n)	Median	(n)	Median	(n)	Median	(n)	Median	Mean	±SD	
Albuquerque,NM	 200	365	  0	  3	 49	 13.0	(90)	 10.0	(91)	  7.0	(92)	 13.0	(92)	 10.0	11.48	±6.22	
Atlanta,GA	 520	365	  0	  3	 28	 10.0	(90)	  9.0	(91)	 10.0	(92)	 11.0	(92)	 10.0	10.77	±4.13	
Austin-San Marcos,TX	 640	362	  0	  3	  8	  3.0	(87)	  3.0	(91)	  3.0	(92)	  3.0	(92)	  3.0	 3.20	±0.73	
Baltimore,MD	 720	365	  0	  3	 32	  9.0	(90)	  7.0	(91)	  6.0	(92)	  9.0	(92)	  8.0	 8.66	±4.74	
Bergen-Passaic,NJ	 875	365	  0	  3	 32	  9.0	(90)	 10.0	(91)	 10.0	(92)	 11.0	(92)	 10.0	10.86	±3.99	
Birmingham,AL	1000	365	  0	  3	 96	 18.0	(90)	 13.0	(91)	 14.0	(92)	 23.0	(92)	 16.0	25.62	±22.97	
Boise City,ID	1080	365	  0	  6	 33	 22.0	(90)	 14.0	(91)	 17.0	(92)	 19.0	(92)	 17.0	18.38	±6.00	
Charleston-North Charleston,SC	1440	326	  0	  3	 18	  3.0	(90)	  3.0	(77)	  3.0	(92)	  3.0	(67)	  3.0	 3.14	±0.99	
Charlotte-Gastonia-Rock Hill,NC-SC	1520	364	  0	  3	 31	  8.0	(89)	  7.0	(91)	  8.0	(92)	  9.0	(92)	  8.0	 8.55	±4.46	
Chicago,IL	1600	365	  0	  3	 33	 14.0	(90)	 11.0	(91)	 15.0	(92)	 13.0	(92)	 13.0	13.19	±4.81	
Cincinnati,OH-KY-IN	1640	365	  0	  3	 20	  9.0	(90)	  7.0	(91)	  7.0	(92)	  9.0	(92)	  8.0	 8.73	±3.73	
Cleveland-Lorain-Elyria,OH	1680	365	  1	  3	168	 21.0	(90)	 13.0	(91)	 13.0	(92)	 12.0	(92)	 13.0	14.63	±9.91	
Columbia,SC	1760	354	  0	  3	 27	  9.0	(79)	  6.0	(91)	  7.0	(92)	  7.0	(92)	  7.0	 7.47	±3.98	
Columbus,OH	1840	365	  0	  3	 38	  8.0	(90)	  7.0	(91)	  7.0	(92)	  7.0	(92)	  7.0	 7.84	±3.46	
Dallas,TX	1920	354	  0	  3	 42	  5.0	(89)	  5.0	(90)	  5.0	(83)	  7.0	(92)	  5.0	 6.28	±4.58	
Denver,CO	2080	365	  0	  5	 33	 14.0	(90)	 10.0	(91)	 10.0	(92)	 16.0	(92)	 11.0	12.84	±5.23	
Des Moines,IA	2120	365	  0	  3	 25	 10.5	(90)	  5.0	(91)	  5.0	(92)	 10.0	(92)	  7.0	 7.92	±4.31	
Detroit,MI	2160	365	  0	  3	 30	  8.0	(90)	  7.0	(91)	  8.0	(92)	  7.0	(92)	  8.0	 8.49	±4.28	
Fort Lauderdale,FL	2680	358	  0	  3	 45	 15.0	(90)	 16.0	(91)	  9.0	(92)	 11.0	(85)	 13.5	13.51	±5.50	
Fort Worth-Arlington,TX	2800	365	  0	  3	 39	  7.0	(90)	  5.0	(91)	  6.0	(92)	  8.0	(92)	  6.0	 7.19	±4.88	
Grand Rapids-Muskegon-Holland,MI	3000	365	  0	  3	 23	  5.0	(90)	  5.0	(91)	  5.0	(92)	  5.0	(92)	  5.0	 5.37	±3.01	
Greensboro-Winston Salem-High Point,NC	3120	364	  0	  3	 33	 14.0	(90)	 10.0	(91)	  9.0	(91)	 15.0	(92)	 11.0	12.40	±4.94	
Greenville-Spartanburg-Anderson,SC	3160	365	  0	  3	 36	  6.0	(90)	  3.0	(91)	  3.0	(92)	  9.0	(92)	  3.0	 6.18	±4.86	
Honolulu,HI	3320	365	  0	  3	 19	 13.0	(90)	  9.0	(91)	  7.0	(92)	  7.0	(92)	  9.0	 8.90	±3.30	
Houston,TX	3360	362	  0	  3	 35	  6.0	(90)	  7.0	(91)	  7.0	(89)	  8.0	(92)	  7.0	 8.07	±4.56	
Indianapolis,IN	3480	365	  0	  3	 31	 10.5	(90)	 11.0	(91)	 11.0	(92)	 11.0	(92)	 11.0	11.55	±3.63	
Jackson,MS	3560	363	  0	  3	 38	  5.0	(90)	  6.0	(91)	  3.0	(90)	  8.0	(92)	  5.0	 6.94	±5.46	
Jersey City,NJ	3640	364	  0	  7	 34	 15.5	(90)	 17.0	(91)	 16.0	(91)	 15.0	(92)	 16.0	16.06	±4.44	
Kansas City,MO-KS	3760	365	  0	  3	 36	  7.0	(90)	  9.0	(91)	  9.0	(92)	 10.0	(92)	  9.0	10.41	±5.82	
Las Cruces,NM	4100	358	  0	  3	 28	  8.0	(83)	  5.0	(91)	  5.0	(92)	 14.5	(92)	  6.0	 8.24	±5.62	
Las Vegas,NV-AZ	4120	365	  0	  5	 59	 18.0	(90)	 13.0	(91)	 14.5	(92)	 33.0	(92)	 16.0	20.56	±12.54	
Lincoln,NE	4360	358	  0	  3	 35	 10.0	(87)	  8.0	(91)	  8.0	(88)	 11.0	(92)	  9.0	10.61	±4.97	
Little Rock-North Little Rock,AR	4400	365	  0	  3	 24	  6.0	(90)	  5.0	(91)	  5.0	(92)	  8.0	(92)	  6.0	 6.52	±3.75	
Los Angeles-Long Beach,CA	4480	365	  0	  7	 65	 20.0	(90)	 13.0	(91)	 13.0	(92)	 28.0	(92)	 15.0	20.13	±12.10	
Louisville,KY-IN	4520	365	  0	  3	 30	 14.0	(90)	  8.0	(91)	  8.0	(92)	 10.0	(92)	 10.0	11.24	±5.49	
Memphis,TN-AR-MS	4920	365	  0	  3	 39	  8.0	(90)	  6.0	(91)	  6.0	(92)	  8.0	(92)	  7.0	 8.73	±5.56	
Miami,FL	5000	363	  0	  3	 32	 10.0	(90)	 10.0	(91)	 11.0	(92)	 11.0	(90)	 10.0	11.17	±4.00	
Middlesex-Somerset-Hunterdon,NJ	5015	361	  0	  3	 25	 10.0	(90)	  8.0	(89)	  8.0	(92)	 10.0	(90)	  9.0	 9.29	±3.27	
Milwaukee-Waukesha,WI	5080	365	  0	  3	 51	 10.0	(90)	  6.0	(91)	  5.0	(92)	  4.0	(92)	  6.0	 7.94	±6.81	
Minneapolis-St. Paul,MN-WI	5120	365	  0	  3	 49	 11.0	(90)	  8.0	(91)	  8.5	(92)	 10.0	(92)	  9.0	11.03	±6.41	
Monmouth-Ocean,NJ	5190	365	  0	  3	 23	  9.5	(90)	  7.0	(91)	  8.0	(92)	  8.0	(92)	  8.0	 8.52	±3.19	
Nashville,TN	5360	365	  0	  5	 40	 14.0	(90)	 13.0	(91)	 14.0	(92)	 16.0	(92)	 14.0	15.00	±6.09	
Nassau-Suffolk,NY	5380	365	  0	  3	 19	  3.0	(90)	  3.0	(91)	  3.0	(92)	  3.0	(92)	  3.0	 4.10	±2.65	
New Orleans,LA	5560	349	  0	  3	 59	 13.0	(88)	 11.0	(91)	 10.0	(78)	  9.0	(92)	 10.0	10.86	±4.26	
New York,NY	5600	365	  0	  6	 28	 15.0	(90)	 13.0	(91)	 11.0	(92)	 11.0	(92)	 13.0	12.92	±3.65	
Newark,NJ	5640	365	  0	  5	 41	 14.0	(90)	 13.0	(91)	 10.0	(92)	 13.0	(92)	 13.0	13.39	±5.42	
Norfolk-Virginia Beach-Newport News,VA_NC	5720	365	  0	  3	 20	  6.0	(90)	  3.0	(91)	  3.0	(92)	  5.0	(92)	  3.0	 5.02	±3.30	
Oklahoma City,OK	5880	365	  0	  3	 27	  7.0	(90)	  3.0	(91)	  3.0	(92)	  6.0	(92)	  5.0	 6.24	±4.69	
Omaha,NE-IA	5920	365	  0	  3	 36	  8.0	(90)	  7.0	(91)	  6.5	(92)	  8.0	(92)	  7.0	 8.52	±5.18	
Orange County,CA	5945	365	  0	  3	 38	 11.0	(90)	  6.0	(91)	  6.0	(92)	 16.0	(92)	  8.0	10.99	±7.71	
Orlando,FL	5960	365	  0	  3	 58	  9.0	(90)	  8.0	(91)	  7.0	(92)	  8.0	(92)	  8.0	 8.74	±4.50	
Philadelphia,PA-NJ	6160	365	  0	  6	 52	 13.0	(90)	 10.0	(91)	 11.0	(92)	 13.0	(92)	 11.0	13.51	±6.45	
Phoenix-Mesa,AZ	6200	365	  0	  3	 64	 20.0	(90)	 13.0	(91)	 13.0	(92)	 30.5	(92)	 17.0	20.44	±11.26	
Pittsburgh,PA	6280	365	  0	  3	 26	  8.0	(90)	  6.0	(91)	 10.0	(92)	  8.0	(92)	  8.0	 8.48	±4.30	
Portland-Vancouver,OR-WA	6440	365	  0	  6	 55	 24.0	(90)	 11.0	(91)	 10.0	(92)	 22.0	(92)	 15.0	18.19	±10.08	
Provo-Orem,UT	6520	365	  0	  3	 36	 12.0	(90)	  5.0	(91)	  7.0	(92)	 16.0	(92)	  9.0	10.82	±6.86	
Raleigh-Durham-Chapel Hill,NC	6640	364	  0	  3	 28	 14.0	(90)	  5.0	(91)	  6.0	(91)	 13.0	(92)	  8.0	 9.85	±5.88	
Reno,NV	6720	365	  0	  3	 38	 16.5	(90)	  8.0	(91)	  9.0	(92)	 13.5	(92)	 10.0	12.90	±7.28	
Richmond-Petersburg,VA	6760	365	  0	  3	 27	  9.0	(90)	  6.0	(91)	  7.0	(92)	 10.0	(92)	  8.0	 8.45	±3.80	
Riverside-San Bernardino,CA	6780	365	  0	  3	 28	 12.0	(90)	  8.0	(91)	 10.0	(92)	 17.0	(92)	 11.0	12.59	±5.12	
St, Louis,MO-IL	7040	365	  0	  3	 48	  9.0	(90)	  6.0	(91)	  8.0	(92)	  9.0	(92)	  8.0	 9.39	±5.08	
Salt Lake City-Ogden,UT	7160	365	  0	  3	 59	 19.0	(90)	 10.0	(91)	 11.0	(92)	 22.0	(92)	 15.0	16.99	±9.97	
San Antonio,TX	7240	365	  0	  3	 32	  7.0	(90)	  7.0	(91)	  8.0	(92)	  8.0	(92)	  8.0	 7.99	±3.44	
San Diego,CA	7320	365	  0	  8	 53	 23.5	(90)	 16.0	(91)	 17.0	(92)	 21.0	(92)	 18.0	20.22	±7.90	
Santa Fe,NM	7490	360	  0	  3	 18	  9.0	(87)	  3.0	(91)	  3.0	(92)	  8.0	(90)	  6.0	 6.24	±2.99	
Seattle-Bellevue-Everett,WA	7600	365	  0	  8	 49	 20.0	(90)	 16.0	(91)	 15.0	(92)	 20.0	(92)	 18.0	19.09	±6.91	
Spokane,WA	7840	365	  0	  9	 58	 25.0	(90)	 16.0	(91)	 17.0	(92)	 23.0	(92)	 19.0	22.00	±9.51	
Tacoma,WA	8200	327	  0	  3	 52	 14.5	(90)	  8.0	(85)	 10.0	(65)	 16.0	(87)	 11.0	13.87	±8.43	
Tampa-St. Petersburg-Clearwater,FL	8280	365	  0	  7	 40	 16.0	(90)	 14.0	(91)	 15.0	(92)	 15.0	(92)	 15.0	15.12	±4.41	
Tucson,AZ	8520	365	  0	  3	 28	 16.0	(90)	 10.0	(91)	 10.0	(92)	 15.0	(92)	 13.0	12.78	±4.54	
Tulsa,OK	8560	338	  0	  3	 17	  8.0	(90)	  7.0	(91)	  8.0	(90)	  8.0	(67)	  8.0	 7.62	±2.93	
Washington,DC-MD-VA-WV	8840	365	  0	  7	 38	 13.0	(90)	 13.0	(91)	 14.0	(92)	 15.0	(92)	 14.0	15.04	±5.51	
Wichita,KS	9040	365	  1	  3	104	 10.5	(90)	 13.0	(91)	 13.0	(92)	  6.5	(92)	 11.0	11.35	±7.27	
Wilmington-Newark,DE-MD	9160	365	  0	  3	 24	  9.0	(90)	  6.0	(91)	  6.0	(92)	  8.0	(92)	  7.0	 7.81	±3.91