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	  6	  7	169	 39.0	(90)	 60.0	(91)	 51.5	(92)	 56.0	(92)	 53.0	51.87	±21.17	
Atlanta,GA	 520	342	  0	  4	 59	 22.0	(86)	 26.0	(91)	 25.5	(74)	 19.0	(91)	 23.0	24.13	±9.60	
Augusta-Aiken,GA	 600	 60	  0	  6	 53	 15.5	(14)	 20.0	(15)	 24.0	(15)	 17.0	(16)	 19.0	20.92	±9.37	
Austin-San Marcos,TX	 640	 61	  0	  6	 36	 16.0	(15)	 20.0	(15)	 18.0	(15)	 16.0	(16)	 18.0	17.80	±5.96	
Baltimore,MD	 720	363	  0	  3	 56	 20.0	(90)	 19.0	(89)	 23.5	(92)	 19.0	(92)	 20.0	23.04	±11.03	
Bergen-Passaic,NJ	 875	 44	  0	  2	 75	   . 	(.)	 34.0	(15)	 31.0	(15)	 20.5	(14)	 29.0	31.73	±15.63	
Birmingham,AL	1000	365	  3	 10	120	 46.0	(90)	 51.0	(91)	 53.0	(92)	 50.5	(92)	 51.0	48.56	±18.60	
Bismarck,ND	1010	136	  0	  2	 40	 17.0	(14)	 11.0	(15)	 16.0	(15)	  7.0	(92)	  9.0	11.41	±7.57	
Boise City,ID	1080	362	  1	  5	109	 24.5	(90)	 16.0	(91)	 33.0	(92)	 19.0	(89)	 23.0	24.56	±13.26	
Casper,WY	1350	 91	  0	  4	 41	 10.5	(30)	 13.0	(31)	 18.0	(30)	   . 	(.)	 14.0	15.09	±7.77	
Charleston-North Charleston,SC	1440	338	  0	  3	 51	 16.0	(81)	 19.0	(90)	 21.0	(85)	 18.0	(82)	 19.0	19.42	±7.95	
Charleston,WV	1480	364	  0	  3	 54	 15.0	(90)	 21.0	(91)	 29.0	(92)	 17.0	(91)	 19.0	21.24	±9.84	
Charlotte-Gastonia-Rock Hill,NC-SC	1520	 61	  0	  8	 54	 20.0	(15)	 30.0	(15)	 33.0	(15)	 22.0	(16)	 26.0	27.48	±10.54	
Cheyenne,WY	1580	104	  0	  2	 32	  7.0	(28)	 17.0	(21)	 15.0	(27)	  8.0	(28)	 10.0	12.22	±7.00	
Chicago,IL	1600	365	  0	  6	 68	 26.0	(90)	 32.0	(91)	 31.5	(92)	 25.0	(92)	 29.0	31.17	±14.24	
Cincinnati,OH-KY-IN	1640	354	  0	  0	 59	 13.0	(88)	 20.0	(89)	 24.5	(86)	 13.0	(91)	 18.0	19.83	±10.97	
Cleveland-Lorain-Elyria,OH	1680	365	  1	  7	103	 30.5	(90)	 35.0	(91)	 32.5	(92)	 26.0	(92)	 31.0	34.09	±16.06	
Columbia,SC	1760	365	  0	  6	 89	 31.5	(90)	 36.0	(91)	 37.0	(92)	 33.0	(92)	 34.0	36.77	±17.74	
Columbus,OH	1840	362	  0	  1	 75	 17.0	(90)	 25.0	(90)	 32.5	(90)	 20.0	(92)	 22.0	25.72	±14.35	
Dallas,TX	1920	 61	  0	 11	 57	 25.0	(15)	 32.0	(15)	 28.0	(15)	 27.5	(16)	 28.0	29.07	±11.16	
Denver,CO	2080	365	  0	  6	 76	 36.0	(90)	 31.0	(91)	 37.5	(92)	 36.5	(92)	 36.0	36.28	±15.30	
Des Moines,IA	2120	259	  0	  4	 77	 15.0	(88)	 23.0	(88)	 28.0	(67)	 21.5	(16)	 22.0	23.53	±12.73	
Detroit,MI	2160	343	  0	  3	 90	 24.0	(90)	 31.0	(91)	 32.0	(74)	 30.0	(88)	 29.0	31.39	±15.23	
Fargo-Moorhead,ND-MN	2520	361	  0	  1	 52	  8.0	(90)	 16.0	(91)	 21.0	(92)	  8.0	(88)	 12.0	15.37	±10.38	
Fort Lauderdale,FL	2680	349	  0	  6	 55	 18.5	(90)	 18.0	(91)	 16.5	(92)	 17.0	(76)	 18.0	18.36	±6.97	
Fort Worth-Arlington,TX	2800	 57	  0	  6	 44	 14.0	(15)	 19.0	(13)	 17.5	(14)	 23.0	(15)	 17.0	19.11	±8.27	
Grand Rapids-Muskegon-Holland,MI	3000	 61	  0	  5	 59	 12.0	(15)	 22.0	(15)	 19.0	(15)	  9.0	(16)	 18.0	19.51	±12.98	
Greensboro-Winston Salem-High Point,NC	3120	364	  0	  5	 55	 17.0	(90)	 21.0	(91)	 28.0	(91)	 18.0	(92)	 20.0	21.83	±9.26	
Greenville-Spartanburg-Anderson,SC	3160	340	  1	  3	103	 17.0	(90)	 19.0	(91)	 22.5	(68)	 19.0	(91)	 19.0	20.67	±10.90	
Honolulu,HI	3320	365	  1	  8	121	 21.0	(90)	 16.0	(91)	 13.0	(92)	 15.0	(92)	 16.0	18.28	±9.18	
Houston,TX	3360	127	  0	  6	 94	 24.0	(30)	 51.0	(31)	 44.0	(32)	 38.0	(34)	 38.0	41.28	±18.49	
Huntington-Ashland,WV-KY-OH	3400	 64	  0	  8	 60	 24.0	(15)	 29.0	(16)	 35.5	(16)	 25.0	(17)	 28.0	30.91	±12.89	
Indianapolis,IN	3480	 67	  0	  6	 65	 19.0	(15)	 29.0	(15)	 31.0	(16)	 20.0	(21)	 23.0	26.55	±12.79	
Jersey City,NJ	3640	 58	  0	  2	 58	 21.0	(13)	 25.5	(14)	 30.0	(15)	 20.5	(16)	 24.0	26.88	±13.66	
Kansas City,MO-KS	3760	 89	  0	 11	 71	 22.0	(30)	 25.5	(28)	 34.0	(15)	 35.0	(16)	 27.0	29.67	±13.17	
Las Cruces,NM	4100	365	 12	  6	501	 30.0	(90)	 51.0	(91)	 42.5	(92)	 55.5	(92)	 46.0	47.95	±33.31	
Las Vegas,NV-AZ	4120	365	  1	 10	181	 31.0	(90)	 35.0	(91)	 43.0	(92)	 49.0	(92)	 41.0	41.11	±16.95	
Little Rock-North Little Rock,AR	4400	 61	  0	  8	 48	 19.0	(15)	 26.0	(15)	 30.0	(15)	 20.5	(16)	 24.0	24.92	±9.48	
Los Angeles-Long Beach,CA	4480	362	  0	  2	 89	 13.5	(90)	 21.0	(91)	 27.0	(92)	 25.0	(89)	 22.0	24.45	±13.32	
Louisville,KY-IN	4520	365	  0	  5	 72	 17.5	(90)	 26.0	(91)	 31.0	(92)	 20.0	(92)	 23.0	25.56	±12.24	
Memphis,TN-AR-MS	4920	 61	  0	  7	 57	 20.0	(15)	 30.0	(15)	 31.0	(15)	 23.5	(16)	 25.0	27.80	±11.68	
Miami,FL	5000	 60	  0	  9	 53	 25.0	(15)	 23.0	(15)	 21.0	(15)	 20.0	(15)	 21.0	24.27	±9.25	
Milwaukee-Waukesha,WI	5080	321	  0	  2	 61	 19.0	(64)	 25.0	(73)	 23.5	(92)	 19.0	(92)	 21.0	24.41	±13.41	
Minneapolis-St. Paul,MN-WI	5120	280	  0	  5	 65	 22.0	(60)	 26.5	(46)	 24.0	(83)	 16.0	(91)	 20.5	22.63	±11.37	
Nashville,TN	5360	 60	  0	  7	 54	 17.0	(15)	 26.0	(15)	 30.5	(14)	 21.0	(16)	 26.0	26.12	±10.60	
Nassau-Suffolk,NY	5380	 14	  0	  2	 27	 13.0	(14)	   . 	(.)	   . 	(.)	   . 	(.)	 13.0	12.36	±5.72	
New Orleans,LA	5560	 39	  0	  8	 48	 17.0	(15)	 24.0	(15)	 20.0	(9)	   . 	(.)	 20.0	21.95	±8.27	
New York,NY	5600	 16	  0	  6	 51	 17.0	(15)	  6.0	(1)	   . 	(.)	   . 	(.)	 16.0	17.44	±10.73	
Norfolk-Virginia Beach-Newport News,VA_NC	5720	 57	  0	  7	 44	 18.0	(12)	 17.0	(14)	 19.0	(15)	 12.5	(16)	 16.0	17.98	±7.39	
Oklahoma City,OK	5880	 60	  0	  2	 47	 17.0	(15)	 25.0	(14)	 20.0	(15)	 20.0	(16)	 20.0	22.07	±10.11	
Omaha,NE-IA	5920	365	  0	  5	 88	 32.0	(90)	 39.0	(91)	 40.5	(92)	 26.5	(92)	 36.0	37.42	±18.57	
Orange County,CA	5945	 62	  0	  2	 56	 19.5	(16)	 21.0	(15)	 27.0	(15)	 37.5	(16)	 24.5	25.90	±10.77	
Orlando,FL	5960	348	  0	  6	 53	 17.0	(90)	 17.0	(91)	 18.0	(77)	 16.0	(90)	 17.0	17.51	±7.08	
Philadelphia,PA-NJ	6160	365	  0	  4	 74	 17.5	(90)	 26.0	(91)	 24.0	(92)	 19.0	(92)	 21.0	24.32	±12.71	
Phoenix-Mesa,AZ	6200	365	 20	  5	140	 47.5	(90)	 61.0	(91)	 55.5	(92)	 77.0	(92)	 61.0	60.86	±23.30	
Pittsburgh,PA	6280	365	  1	  5	102	 27.5	(90)	 39.0	(91)	 44.0	(92)	 28.0	(92)	 35.0	38.24	±20.16	
Portland-Vancouver,OR-WA	6440	 63	  0	  9	 70	 27.0	(16)	 15.0	(15)	 20.0	(15)	 25.0	(17)	 20.0	22.90	±11.28	
Provo-Orem,UT	6520	359	  0	  2	 66	 19.0	(90)	 15.0	(87)	 31.0	(91)	 21.0	(91)	 22.0	23.58	±13.42	
Raleigh-Durham-Chapel Hill,NC	6640	335	  0	  4	 58	 14.5	(90)	 20.0	(66)	 26.0	(89)	 15.0	(90)	 18.0	19.65	±9.55	
Rapid City,SD	6660	351	  1	  5	101	 29.0	(90)	 31.0	(90)	 29.0	(82)	 31.0	(89)	 31.0	34.11	±17.86	
Reno,NV	6720	335	  1	  6	110	 52.0	(77)	 34.0	(88)	 44.0	(89)	 35.0	(81)	 42.0	41.06	±19.25	
Riverside-San Bernardino,CA	6780	362	  0	  3	 88	 19.0	(89)	 34.0	(91)	 36.0	(90)	 35.5	(92)	 32.0	35.05	±17.82	
St, Louis,MO-IL	7040	365	 10	  6	124	 43.0	(90)	 54.0	(91)	 54.5	(92)	 50.0	(92)	 51.0	52.01	±23.08	
Salt Lake City-Ogden,UT	7160	365	  1	  5	112	 32.0	(90)	 24.0	(91)	 37.0	(92)	 35.0	(92)	 31.0	33.80	±16.82	
San Antonio,TX	7240	331	  0	  2	 70	 13.0	(90)	 21.0	(81)	 21.0	(87)	 22.0	(73)	 19.0	20.02	±9.53	
San Diego,CA	7320	 83	  1	  8	101	 33.5	(20)	 34.0	(23)	 40.0	(21)	 49.0	(19)	 35.0	40.43	±19.48	
Santa Fe,NM	7490	 60	  0	  2	 35	  9.0	(15)	 14.0	(15)	 15.5	(14)	 13.0	(16)	 13.5	13.78	±6.41	
Seattle-Bellevue-Everett,WA	7600	365	  0	  6	 61	 25.5	(90)	 17.0	(91)	 20.0	(92)	 21.5	(92)	 20.0	22.27	±9.90	
Sioux Falls,SD	7760	357	  0	  4	 50	 11.0	(88)	 15.0	(91)	 20.0	(86)	 11.5	(92)	 14.0	16.33	±9.08	
Spokane,WA	7840	357	  1	  4	103	 27.0	(90)	 17.0	(91)	 25.5	(92)	 15.0	(84)	 20.0	24.07	±15.59	
Tacoma,WA	8200	 87	  0	  5	 46	   . 	(.)	   . 	(.)	   . 	(.)	 16.0	(87)	 16.0	17.99	±9.56	
Tampa-St. Petersburg-Clearwater,FL	8280	365	  0	  9	 63	 28.0	(90)	 29.0	(91)	 30.0	(92)	 28.0	(92)	 29.0	29.76	±10.15	
Topeka,KS	8440	 56	  0	  8	 50	 18.0	(15)	 23.0	(14)	 24.0	(11)	 19.0	(16)	 19.0	20.89	±8.36	
Tucson,AZ	8520	365	  0	  7	 72	 21.0	(90)	 30.0	(91)	 25.5	(92)	 43.5	(92)	 29.0	30.96	±13.26	
Tulsa,OK	8560	 64	  0	  6	 86	 16.0	(15)	 28.0	(15)	 29.5	(16)	 18.5	(18)	 23.0	24.70	±12.94	
Washington,DC-MD-VA-WV	8840	 63	  0	  8	 64	 27.0	(15)	 29.0	(17)	 49.0	(15)	 30.0	(16)	 31.0	32.98	±14.00	
Wichita,KS	9040	365	  0	  6	 53	 20.0	(90)	 21.0	(91)	 26.0	(92)	 20.0	(92)	 22.0	23.68	±9.48	
Wilmington-Newark,DE-MD	9160	359	  0	  5	 57	 17.5	(90)	 19.0	(91)	 22.5	(92)	 16.0	(86)	 19.0	20.81	±10.12