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	 20	100	 34.0	(90)	 47.0	(91)	 46.0	(92)	 33.0	(92)	 39.0	41.58	±12.22	
Atlanta,GA	 520	246	 17	  9	174	 35.5	(32)	 48.0	(91)	 51.0	(92)	 36.0	(31)	 45.0	53.70	±28.04	
Augusta-Aiken,GA	 600	355	  1	  2	109	 27.5	(90)	 45.0	(91)	 40.0	(92)	 24.5	(82)	 33.0	36.64	±17.47	
Austin-San Marcos,TX	 640	365	  3	  2	109	 26.0	(90)	 41.0	(91)	 37.0	(92)	 30.5	(92)	 32.0	35.95	±16.02	
Baltimore,MD	 720	276	 23	  2	172	 21.0	(1)	 41.0	(91)	 48.0	(92)	 18.0	(92)	 39.0	43.77	±30.82	
Bergen-Passaic,NJ	 875	365	 11	  2	140	 23.0	(90)	 38.0	(91)	 41.0	(92)	 17.0	(92)	 29.0	32.48	±21.97	
Birmingham,AL	1000	365	  8	  7	132	 23.0	(90)	 45.0	(91)	 44.5	(92)	 22.0	(92)	 34.0	37.72	±22.07	
Bismarck,ND	1010	 88	  0	  6	 30	   . 	(.)	   . 	(.)	   . 	(.)	 18.0	(88)	 18.0	18.17	±4.42	
Boise City,ID	1080	154	  0	 13	100	   . 	(.)	 38.0	(62)	 40.0	(92)	   . 	(.)	 39.0	40.79	±11.57	
Charleston-North Charleston,SC	1440	365	  0	  6	 95	 30.5	(90)	 43.0	(91)	 30.0	(92)	 25.0	(92)	 31.0	32.68	±12.81	
Charleston,WV	1480	214	  2	  2	106	   . 	(.)	 41.0	(91)	 41.5	(92)	 15.0	(31)	 40.0	39.25	±16.49	
Charlotte-Gastonia-Rock Hill,NC-SC	1520	292	 17	  7	166	 35.0	(17)	 48.0	(91)	 52.5	(92)	 24.5	(92)	 41.0	47.29	±26.16	
Chicago,IL	1600	365	 15	  6	172	 27.0	(90)	 42.0	(91)	 45.5	(92)	 20.0	(92)	 33.0	38.25	±24.54	
Cincinnati,OH-KY-IN	1640	246	 14	  9	172	 28.0	(32)	 45.0	(91)	 47.5	(92)	 24.0	(31)	 42.0	49.40	±27.61	
Cleveland-Lorain-Elyria,OH	1680	215	 16	  8	185	 28.0	(1)	 45.0	(91)	 48.0	(92)	 26.0	(31)	 45.0	53.06	±28.80	
Columbia,SC	1760	365	  7	  7	129	 30.0	(90)	 44.0	(91)	 42.0	(92)	 26.5	(92)	 35.0	37.70	±17.75	
Columbus,OH	1840	215	  9	  5	154	 23.0	(1)	 43.0	(91)	 47.0	(92)	 26.0	(31)	 43.0	49.58	±24.55	
Dallas,TX	1920	365	 32	  9	159	 30.0	(90)	 46.0	(91)	 65.0	(92)	 31.0	(92)	 38.0	48.53	±29.30	
Denver,CO	2080	365	  2	  7	116	 36.0	(90)	 45.0	(91)	 47.0	(92)	 32.0	(92)	 38.0	41.07	±16.51	
Des Moines,IA	2120	215	  0	 13	 87	 15.0	(1)	 37.0	(91)	 38.0	(92)	 23.0	(31)	 36.0	36.65	±12.58	
Detroit,MI	2160	273	 12	  2	156	 28.0	(1)	 39.0	(91)	 42.0	(92)	 11.0	(89)	 34.0	37.19	±27.91	
Dover,DE	2190	215	  2	  2	106	 27.0	(1)	 40.0	(91)	 40.5	(92)	 23.0	(31)	 38.0	41.40	±18.84	
Fargo-Moorhead,ND-MN	2520	362	  0	  6	 50	 27.0	(90)	 35.0	(91)	 29.0	(92)	 20.0	(89)	 27.0	27.74	±8.75	
Fort Lauderdale,FL	2680	358	  0	  8	 95	 29.0	(90)	 30.0	(91)	 20.0	(92)	 27.0	(85)	 27.0	27.82	±10.70	
Fort Worth-Arlington,TX	2800	365	 27	  5	182	 30.0	(90)	 45.0	(91)	 56.5	(92)	 31.0	(92)	 37.0	47.21	±29.60	
Grand Rapids-Muskegon-Holland,MI	3000	184	 13	 17	172	 24.0	(1)	 41.0	(91)	 42.0	(92)	   . 	(.)	 41.0	51.48	±27.45	
Greensboro-Winston Salem-High Point,NC	3120	215	  4	  9	124	  9.0	(1)	 45.0	(91)	 46.0	(92)	 26.0	(31)	 44.0	47.18	±20.45	
Greenville-Spartanburg-Anderson,SC	3160	365	  3	 10	111	 27.0	(90)	 45.0	(91)	 45.0	(92)	 25.5	(92)	 35.0	39.24	±19.18	
Honolulu,HI	3320	363	  0	  5	 36	 23.0	(90)	 19.0	(91)	 13.0	(92)	 17.0	(90)	 17.0	18.15	±6.41	
Houston,TX	3360	364	 40	  9	197	 30.0	(90)	 59.0	(91)	 46.0	(91)	 33.5	(92)	 40.5	52.44	±35.02	
Huntington-Ashland,WV-KY-OH	3400	246	  3	  8	106	 32.5	(32)	 44.0	(91)	 46.0	(92)	 23.0	(31)	 42.0	43.97	±18.55	
Indianapolis,IN	3480	184	  5	 21	135	 23.0	(1)	 45.0	(91)	 45.5	(92)	   . 	(.)	 45.0	52.82	±22.23	
Jackson,MS	3560	246	  0	 13	 87	 38.0	(32)	 39.0	(91)	 33.5	(92)	 32.0	(31)	 37.0	37.19	±11.51	
Jersey City,NJ	3640	364	  6	  2	129	 20.0	(90)	 31.0	(91)	 33.0	(92)	 13.0	(91)	 24.5	27.31	±19.66	
Kansas City,MO-KS	3760	365	 15	  6	177	 25.0	(90)	 45.0	(91)	 50.0	(92)	 23.0	(92)	 34.0	40.63	±24.94	
Las Cruces,NM	4100	365	  0	 16	 92	 31.0	(90)	 45.0	(91)	 43.5	(92)	 32.0	(92)	 38.0	39.58	±11.13	
Las Vegas,NV-AZ	4120	365	  9	 17	151	 33.0	(90)	 50.0	(91)	 53.0	(92)	 30.5	(92)	 40.0	46.19	±20.47	
Lincoln,NE	4360	215	  0	 13	 51	 25.0	(1)	 33.0	(91)	 27.0	(92)	 21.0	(31)	 29.0	28.78	±7.61	
Little Rock-North Little Rock,AR	4400	365	  4	  9	122	 27.0	(90)	 46.0	(91)	 46.0	(92)	 26.0	(92)	 36.0	39.55	±18.92	
Los Angeles-Long Beach,CA	4480	365	 58	 16	207	 33.0	(90)	 50.0	(91)	 98.5	(92)	 31.0	(92)	 42.0	58.02	±38.34	
Louisville,KY-IN	4520	246	  8	 12	135	 29.5	(32)	 45.0	(91)	 48.0	(92)	 27.0	(31)	 43.0	48.59	±24.56	
Memphis,TN-AR-MS	4920	365	 13	  5	156	 26.5	(90)	 49.0	(91)	 55.0	(92)	 24.0	(92)	 38.0	43.84	±25.66	
Miami,FL	5000	365	  0	 10	 77	 32.5	(90)	 35.0	(91)	 23.0	(92)	 30.0	(92)	 30.0	31.46	±11.63	
Middlesex-Somerset-Hunterdon,NJ	5015	365	 15	  3	140	 27.5	(90)	 41.0	(91)	 44.5	(92)	 21.0	(92)	 32.0	37.26	±23.32	
Milwaukee-Waukesha,WI	5080	365	 15	  2	164	 23.0	(90)	 38.0	(91)	 38.0	(92)	 16.0	(92)	 30.0	34.14	±24.58	
Minneapolis-St. Paul,MN-WI	5120	365	  3	  7	114	 26.0	(90)	 41.0	(91)	 36.5	(92)	 19.0	(92)	 30.0	32.07	±16.09	
Monmouth-Ocean,NJ	5190	238	 16	  5	159	 35.0	(9)	 41.0	(91)	 42.0	(92)	 25.0	(46)	 39.0	45.59	±27.00	
Nashville,TN	5360	246	  4	 11	132	 36.0	(32)	 47.0	(91)	 48.0	(92)	 37.0	(31)	 45.0	48.98	±19.30	
Nassau-Suffolk,NY	5380	365	  9	  8	142	 27.0	(90)	 38.0	(91)	 39.0	(92)	 26.0	(92)	 31.0	35.82	±20.54	
New Orleans,LA	5560	365	  2	  9	111	 30.0	(90)	 46.0	(91)	 41.0	(92)	 32.0	(92)	 37.0	40.14	±16.99	
New York,NY	5600	365	 12	  3	192	 27.0	(90)	 40.0	(91)	 40.5	(92)	 23.0	(92)	 31.0	37.10	±24.47	
Newark,NJ	5640	365	  3	  2	116	 25.0	(90)	 39.0	(91)	 38.0	(92)	 20.0	(92)	 29.0	32.52	±16.40	
Norfolk-Virginia Beach-Newport News,VA_NC	5720	215	  1	  5	104	 27.0	(1)	 43.0	(91)	 41.5	(92)	 24.0	(31)	 41.0	42.17	±16.79	
Oklahoma City,OK	5880	365	  4	  2	124	 27.0	(90)	 43.0	(91)	 46.5	(92)	 28.0	(92)	 35.0	38.59	±17.63	
Omaha,NE-IA	5920	215	  0	 14	 72	 23.0	(1)	 40.0	(91)	 36.0	(92)	 27.0	(31)	 37.0	37.01	±11.04	
Orange County,CA	5945	365	  1	  8	101	 35.0	(90)	 41.0	(91)	 43.0	(92)	 30.0	(92)	 38.0	38.19	±12.36	
Orlando,FL	5960	365	  4	 13	135	 32.5	(90)	 43.0	(91)	 34.5	(92)	 28.0	(92)	 34.0	36.39	±16.31	
Philadelphia,PA-NJ	6160	365	 21	  5	150	 27.0	(90)	 43.0	(91)	 49.5	(92)	 23.0	(92)	 34.0	41.52	±26.30	
Phoenix-Mesa,AZ	6200	365	 14	 21	129	 31.0	(90)	 59.0	(91)	 51.0	(92)	 34.0	(92)	 44.0	49.19	±21.43	
Pittsburgh,PA	6280	365	 10	  3	156	 25.0	(90)	 44.0	(91)	 47.0	(92)	 19.0	(92)	 33.0	38.65	±24.68	
Portland-Vancouver,OR-WA	6440	165	  0	 11	 87	   . 	(.)	 27.0	(62)	 32.0	(92)	 26.0	(11)	 28.0	30.88	±10.04	
Provo-Orem,UT	6520	154	  3	 23	169	   . 	(.)	 41.0	(62)	 44.0	(92)	   . 	(.)	 42.0	46.95	±17.05	
Raleigh-Durham-Chapel Hill,NC	6640	365	  7	  5	135	 26.5	(90)	 45.0	(91)	 46.0	(92)	 21.0	(92)	 34.0	38.49	±21.79	
Rapid City,SD	6660	231	  0	  9	 79	   . 	(.)	 34.0	(60)	 35.0	(92)	 23.0	(79)	 31.0	30.86	±9.34	
Reno,NV	6720	365	  0	 18	 69	 32.5	(90)	 41.0	(91)	 46.0	(92)	 30.0	(92)	 37.0	37.28	±9.10	
Richmond-Petersburg,VA	6760	215	  6	  3	151	 13.0	(1)	 43.0	(91)	 47.0	(92)	 22.0	(31)	 42.0	47.83	±24.24	
Riverside-San Bernardino,CA	6780	365	 84	 28	209	 35.5	(90)	 82.0	(91)	116.0	(92)	 37.0	(92)	 48.0	70.69	±45.10	
St, Louis,MO-IL	7040	365	 27	  4	164	 23.0	(90)	 47.0	(91)	 56.0	(92)	 20.0	(92)	 34.0	42.75	±30.96	
Salt Lake City-Ogden,UT	7160	154	 10	 26	159	   . 	(.)	 44.0	(62)	 49.0	(92)	   . 	(.)	 45.0	55.01	±24.56	
San Antonio,TX	7240	365	  4	  9	116	 30.0	(90)	 44.0	(91)	 36.5	(92)	 32.5	(92)	 34.0	38.24	±16.77	
San Diego,CA	7320	365	  5	 21	111	 35.0	(90)	 48.0	(91)	 52.5	(92)	 35.0	(92)	 42.0	46.31	±16.33	
Seattle-Bellevue-Everett,WA	7600	154	  0	 12	 82	   . 	(.)	 27.0	(62)	 27.0	(92)	   . 	(.)	 27.0	28.76	±9.96	
Sioux Falls,SD	7760	365	  0	  4	 66	 24.5	(90)	 38.0	(91)	 35.0	(92)	 20.0	(92)	 30.0	29.90	±10.86	
Spokane,WA	7840	154	  0	 14	 69	   . 	(.)	 34.0	(62)	 36.5	(92)	   . 	(.)	 35.0	36.33	±8.02	
Tacoma,WA	8200	365	  0	 16	 74	 33.0	(90)	 31.0	(91)	 28.5	(92)	 29.0	(92)	 30.0	31.19	±6.24	
Tampa-St. Petersburg-Clearwater,FL	8280	365	  4	 13	116	 34.0	(90)	 47.0	(91)	 38.0	(92)	 32.0	(92)	 36.0	39.82	±17.04	
Tucson,AZ	8520	365	  1	 19	106	 33.0	(90)	 47.0	(91)	 42.0	(92)	 34.0	(92)	 39.0	40.87	±12.05	
Tulsa,OK	8560	365	  6	  2	129	 27.0	(90)	 42.0	(91)	 48.5	(92)	 28.0	(92)	 36.0	40.21	±19.68	
Washington,DC-MD-VA-WV	8840	365	 20	  3	140	 24.5	(90)	 43.0	(91)	 54.0	(92)	 20.0	(92)	 34.0	40.57	±27.04	
Wichita,KS	9040	353	  0	  3	 95	 22.0	(90)	 40.0	(91)	 41.0	(89)	 20.0	(83)	 30.0	31.79	±14.28	
Wilmington-Newark,DE-MD	9160	364	 12	  2	166	 23.0	(89)	 39.0	(91)	 44.5	(92)	 20.0	(92)	 30.0	35.68	±23.97	
Wilmington,NC	9200	215	  0	  2	100	 26.0	(1)	 42.0	(91)	 31.5	(92)	 26.0	(31)	 34.0	35.67	±14.43