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	366	  0	  3	 47	 15.0	(91)	  8.0	(91)	  6.0	(92)	 13.5	(92)	  9.0	11.81	±7.51	
Atlanta,GA	 520	366	  0	  3	 40	 10.0	(91)	  8.0	(91)	  9.0	(92)	 13.0	(92)	 10.0	10.80	±5.27	
Austin-San Marcos,TX	 640	365	  0	  3	  7	  3.0	(90)	  3.0	(91)	  3.0	(92)	  3.0	(92)	  3.0	 3.23	±0.77	
Baltimore,MD	 720	366	  0	  3	 45	 11.0	(91)	  8.0	(91)	  6.0	(92)	 11.0	(92)	  9.0	 9.52	±5.01	
Baton Rouge,LA	 760	366	  0	  3	 38	  8.0	(91)	  7.0	(91)	  9.0	(92)	  7.0	(92)	  8.0	 8.05	±4.58	
Bergen-Passaic,NJ	 875	365	  0	  3	 33	 10.0	(91)	 11.0	(91)	 13.0	(92)	 10.0	(91)	 11.0	11.93	±4.40	
Birmingham,AL	1000	366	  0	  3	 89	 13.0	(91)	  9.0	(91)	 14.0	(92)	 18.0	(92)	 14.0	18.37	±16.00	
Boise City,ID	1080	366	  0	  8	 39	 17.0	(91)	 17.0	(91)	 19.0	(92)	 25.0	(92)	 19.0	19.69	±5.83	
Charleston-North Charleston,SC	1440	366	  0	  3	 28	  6.0	(91)	  3.0	(91)	  4.0	(92)	  3.0	(92)	  3.0	 5.10	±3.23	
Charlotte-Gastonia-Rock Hill,NC-SC	1520	365	  0	  3	 36	  8.0	(90)	  6.0	(91)	  6.0	(92)	 10.0	(92)	  7.0	 8.56	±5.22	
Chicago,IL	1600	366	  0	  8	 42	 20.0	(91)	 20.0	(91)	 23.0	(92)	 17.0	(92)	 19.0	20.28	±6.12	
Cincinnati,OH-KY-IN	1640	366	  0	  3	 47	  9.0	(91)	  5.0	(91)	  7.0	(92)	 10.0	(92)	  8.0	 8.88	±5.10	
Cleveland-Lorain-Elyria,OH	1680	366	  0	  6	 66	 15.0	(91)	 11.0	(91)	 23.0	(92)	 25.5	(92)	 15.0	18.97	±10.63	
Columbia,SC	1760	342	  0	  3	 28	  9.0	(91)	  7.0	(67)	  6.0	(92)	  9.0	(92)	  8.0	 8.12	±4.23	
Columbus,OH	1840	366	  0	  3	 33	  8.0	(91)	  7.0	(91)	  8.0	(92)	  9.0	(92)	  8.0	 8.69	±3.68	
Dallas,TX	1920	350	  0	  3	 26	  6.0	(91)	  3.0	(91)	  3.0	(91)	  8.0	(77)	  5.0	 6.21	±3.73	
Denver,CO	2080	366	  0	  5	 50	 15.0	(91)	 10.0	(91)	 11.0	(92)	 17.0	(92)	 13.0	14.31	±7.00	
Des Moines,IA	2120	366	  0	  8	 36	 13.0	(91)	 11.0	(91)	 11.0	(92)	 11.0	(92)	 11.0	12.58	±3.30	
Detroit,MI	2160	366	  0	  3	 35	  6.0	(91)	  7.0	(91)	 13.0	(92)	  9.0	(92)	  8.0	 9.41	±5.25	
Fort Wayne,IN	2760	339	  0	  3	 42	 10.0	(91)	 14.0	(91)	 13.5	(84)	 13.0	(73)	 13.0	12.55	±4.37	
Fort Worth-Arlington,TX	2800	366	  0	  3	 23	  7.0	(91)	  5.0	(91)	  6.0	(92)	  8.0	(92)	  6.0	 6.73	±3.50	
Gary,IN	2960	364	  0	  3	 32	  6.0	(91)	 15.0	(89)	 15.0	(92)	 15.0	(92)	 14.0	13.27	±5.23	
Grand Rapids-Muskegon-Holland,MI	3000	365	  0	  3	 25	  5.0	(91)	  3.0	(91)	  5.0	(91)	  5.0	(92)	  5.0	 5.56	±3.42	
Greensboro-Winston Salem-High Point,NC	3120	366	  0	  5	 36	 15.0	(91)	  9.0	(91)	  9.0	(92)	 14.0	(92)	 11.0	12.49	±5.60	
Greenville-Spartanburg-Anderson,SC	3160	361	  0	  3	 31	  8.0	(90)	  5.0	(91)	  6.0	(90)	  8.5	(90)	  6.0	 7.82	±5.04	
Houston,TX	3360	366	  0	  3	 36	  9.0	(91)	  6.0	(91)	  8.0	(92)	  9.0	(92)	  8.0	 9.44	±5.47	
Indianapolis,IN	3480	366	  0	  6	 32	 11.0	(91)	 10.0	(91)	 12.0	(92)	 15.0	(92)	 11.0	12.67	±4.76	
Jackson,MS	3560	362	  0	  3	 34	  5.0	(88)	  3.0	(91)	  3.0	(91)	  6.0	(92)	  5.0	 6.40	±5.08	
Jersey City,NJ	3640	350	  0	  3	 36	 15.0	(91)	 17.0	(91)	 18.0	(76)	 18.0	(92)	 17.0	17.10	±5.69	
Kansas City,MO-KS	3760	366	  0	  3	 39	  9.0	(91)	  9.0	(91)	  8.0	(92)	  7.0	(92)	  9.0	 9.64	±4.88	
Las Cruces,NM	4100	365	  0	  3	 28	 10.0	(91)	  5.0	(91)	  3.0	(92)	  8.0	(91)	  6.0	 8.08	±5.60	
Las Vegas,NV-AZ	4120	366	  0	  3	 64	 22.0	(91)	 14.0	(91)	 14.0	(92)	 25.5	(92)	 17.0	20.41	±11.99	
Lincoln,NE	4360	366	  0	  3	 48	 11.0	(91)	 10.0	(91)	 10.0	(92)	 11.0	(92)	 10.0	12.03	±5.66	
Little Rock-North Little Rock,AR	4400	366	  0	  3	 22	  7.0	(91)	  5.0	(91)	  5.0	(92)	  8.0	(92)	  6.0	 6.40	±3.74	
Los Angeles-Long Beach,CA	4480	366	  0	  6	 71	 27.0	(91)	 10.0	(91)	 11.0	(92)	 30.5	(92)	 17.0	21.60	±13.69	
Louisville,KY-IN	4520	366	  0	  3	 39	 13.0	(91)	 11.0	(91)	 13.0	(92)	 17.0	(92)	 13.0	13.67	±5.20	
Memphis,TN-AR-MS	4920	366	  0	  3	 68	 11.0	(91)	  8.0	(91)	 10.0	(92)	 13.0	(92)	 10.0	12.40	±7.45	
Miami,FL	5000	366	  0	  6	 70	 14.0	(91)	 20.0	(91)	 26.0	(92)	 10.0	(92)	 18.0	18.69	±8.62	
Middlesex-Somerset-Hunterdon,NJ	5015	365	  0	  3	 25	  9.0	(91)	  6.0	(91)	  8.0	(91)	 11.0	(92)	  8.0	 8.88	±3.80	
Milwaukee-Waukesha,WI	5080	366	  0	  3	 35	  9.0	(91)	  7.0	(91)	  8.0	(92)	  6.5	(92)	  8.0	 8.95	±5.02	
Minneapolis-St. Paul,MN-WI	5120	366	  0	  3	 43	 11.0	(91)	  9.0	(91)	 10.0	(92)	 13.5	(92)	 11.0	11.87	±6.10	
Monmouth-Ocean,NJ	5190	366	  0	  3	 26	 10.0	(91)	  8.0	(91)	  8.0	(92)	 10.0	(92)	  9.0	 9.49	±3.47	
Nashville,TN	5360	366	  0	  3	 48	 15.0	(91)	 11.0	(91)	 15.0	(92)	 17.0	(92)	 15.0	15.67	±7.19	
Nassau-Suffolk,NY	5380	365	  0	  3	 25	  3.0	(91)	  3.0	(91)	  3.0	(92)	  3.0	(91)	  3.0	 4.44	±3.17	
New Orleans,LA	5560	366	  0	  5	 43	 13.0	(91)	 11.0	(91)	 11.0	(92)	 14.0	(92)	 13.0	13.36	±5.36	
New York,NY	5600	366	  0	  7	 34	 15.0	(91)	 15.0	(91)	 14.0	(92)	 15.0	(92)	 15.0	14.89	±3.82	
Newark,NJ	5640	366	  0	  3	 44	 14.0	(91)	 13.0	(91)	 13.0	(92)	 15.5	(92)	 14.0	14.52	±5.91	
Norfolk-Virginia Beach-Newport News,VA_NC	5720	366	  0	  3	 36	  7.0	(91)	  3.0	(91)	  3.0	(92)	  9.0	(92)	  6.0	 7.09	±5.46	
Oklahoma City,OK	5880	355	  0	  3	 27	  7.0	(80)	  5.0	(91)	  5.5	(92)	  8.5	(92)	  7.0	 7.63	±4.88	
Omaha,NE-IA	5920	366	  0	  3	 28	  8.0	(91)	  6.0	(91)	  8.0	(92)	 10.0	(92)	  8.0	 9.07	±4.69	
Orlando,FL	5960	366	  0	  3	 22	 11.0	(91)	  7.0	(91)	  7.0	(92)	 10.0	(92)	  9.0	 9.26	±3.58	
Philadelphia,PA-NJ	6160	366	  0	  6	 41	 13.0	(91)	 10.0	(91)	 11.0	(92)	 14.0	(92)	 13.0	14.39	±6.56	
Phoenix-Mesa,AZ	6200	366	  0	  6	 58	 27.0	(91)	 15.0	(91)	 15.0	(92)	 26.5	(92)	 18.0	21.36	±9.98	
Pittsburgh,PA	6280	366	  0	  3	 28	 11.0	(91)	  8.0	(91)	  8.0	(92)	  9.0	(92)	  9.0	 9.78	±4.27	
Portland-Vancouver,OR-WA	6440	366	  0	  7	 56	 19.0	(91)	 14.0	(91)	 11.0	(92)	 23.0	(92)	 16.0	18.69	±9.32	
Provo-Orem,UT	6520	366	  0	  3	 41	 14.0	(91)	  7.0	(91)	  7.0	(92)	 15.0	(92)	  9.0	11.27	±6.75	
Raleigh-Durham-Chapel Hill,NC	6640	336	  0	  3	 32	 16.0	(90)	  5.0	(62)	  6.0	(92)	 17.0	(92)	  9.0	11.51	±7.13	
Reno,NV	6720	366	  0	  3	 45	 17.0	(91)	  8.0	(91)	 10.0	(92)	 18.0	(92)	 13.0	14.86	±8.82	
Richmond-Petersburg,VA	6760	366	  0	  3	 26	 10.0	(91)	  7.0	(91)	  6.0	(92)	  9.0	(92)	  8.0	 8.79	±4.20	
St, Louis,MO-IL	7040	366	  0	  3	 38	  9.0	(91)	  8.0	(91)	 10.0	(92)	  9.0	(92)	  9.0	10.20	±5.15	
Salt Lake City-Ogden,UT	7160	366	  0	  3	 72	 19.0	(91)	  9.0	(91)	 10.0	(92)	 20.0	(92)	 14.0	17.24	±11.06	
San Antonio,TX	7240	366	  0	  3	 26	  8.0	(91)	  6.0	(91)	  6.0	(92)	  7.0	(92)	  7.0	 7.14	±3.36	
Santa Fe,NM	7490	366	  0	  3	 22	 10.0	(91)	  6.0	(91)	  3.0	(92)	  7.0	(92)	  6.0	 6.68	±3.65	
Seattle-Bellevue-Everett,WA	7600	366	  0	  7	 39	 22.0	(91)	 15.0	(91)	 15.0	(92)	 23.0	(92)	 17.0	18.96	±6.41	
Spokane,WA	7840	366	  0	  8	 51	 24.0	(91)	 18.0	(91)	 19.0	(92)	 26.0	(92)	 20.0	22.23	±7.32	
Tacoma,WA	8200	360	  0	  3	 56	 14.0	(85)	 10.0	(91)	 10.0	(92)	 17.0	(92)	 13.0	13.71	±7.27	
Tampa-St. Petersburg-Clearwater,FL	8280	366	  0	  6	 33	 18.0	(91)	 15.0	(91)	 16.0	(92)	 17.0	(92)	 16.0	16.43	±4.44	
Tucson,AZ	8520	366	  0	  6	 42	 16.0	(91)	 13.0	(91)	 10.0	(92)	 16.0	(92)	 14.0	14.36	±4.74	
Tulsa,OK	8560	362	  0	  3	 24	  7.0	(91)	  5.0	(91)	  5.0	(92)	  7.0	(88)	  6.0	 6.61	±3.61	
Washington,DC-MD-VA-WV	8840	366	  0	  6	 40	 14.0	(91)	 11.0	(91)	 11.0	(92)	 15.0	(92)	 13.0	13.94	±5.22	
Wichita,KS	9040	366	  0	  3	 43	  8.0	(91)	  7.0	(91)	  6.0	(92)	 11.0	(92)	  7.0	 9.25	±6.56	
Wilmington-Newark,DE-MD	9160	366	  0	  3	 27	 10.0	(91)	  5.0	(91)	  7.0	(92)	  8.0	(92)	  7.0	 7.87	±4.30	
Wilmington,NC	9200	 92	  0	  7	 26	 14.0	(91)	 10.0	(1)	   . 	(.)	   . 	(.)	 14.0	14.47	±4.56