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	
Akron,OH	  80	365	  0	  1	 57	  9.5	(90)	  7.0	(91)	  7.0	(92)	  9.0	(92)	  7.0	10.20	±9.12	
Atlanta,GA	 520	365	  0	  1	 31	  4.0	(90)	  3.0	(91)	  3.0	(92)	  6.0	(92)	  4.0	 5.78	±5.06	
Atlantic-Cape May,NJ	 560	354	  0	  1	 10	  3.0	(84)	  1.0	(89)	  1.0	(92)	  1.0	(89)	  1.0	 2.07	±1.57	
Austin-San Marcos,TX	 640	199	  0	  1	  7	   . 	(.)	  1.0	(80)	  1.0	(88)	  1.0	(31)	  1.0	 1.20	±0.72	
Baltimore,MD	 720	363	  0	  1	 31	  7.0	(90)	  4.0	(91)	  7.0	(91)	  4.0	(91)	  6.0	 6.37	±4.27	
Baton Rouge,LA	 760	365	  0	  1	 47	  9.0	(90)	  7.0	(91)	  9.0	(92)	  7.0	(92)	  9.0	 9.30	±6.12	
Bergen-Passaic,NJ	 875	340	  0	  1	 24	  6.0	(86)	  3.0	(89)	  3.0	(76)	  4.0	(89)	  3.0	 4.72	±3.88	
Biloxi-Gulfport-Pascagoula,MS	 920	358	  0	  1	 18	  3.0	(90)	  3.0	(91)	  3.0	(87)	  3.0	(90)	  3.0	 3.20	±2.19	
Birmingham,AL	1000	365	  0	  1	 35	  3.0	(90)	  3.0	(91)	  3.0	(92)	  4.0	(92)	  3.0	 4.01	±3.71	
Bismarck,ND	1010	363	  0	  1	 10	  1.0	(88)	  1.0	(91)	  1.0	(92)	  1.0	(92)	  1.0	 1.96	±1.59	
Charleston-North Charleston,SC	1440	365	  0	  1	 13	  3.0	(90)	  3.0	(91)	  1.0	(92)	  4.0	(92)	  3.0	 3.49	±2.57	
Charleston,WV	1480	364	  0	  1	 68	 13.0	(89)	 10.0	(91)	 13.0	(92)	 11.0	(92)	 12.0	14.50	±10.45	
Charlotte-Gastonia-Rock Hill,NC-SC	1520	358	  0	  0	 25	  6.0	(86)	  4.0	(90)	  3.0	(90)	  4.0	(92)	  4.0	 4.67	±3.67	
Chicago,IL	1600	365	  0	  1	 46	  9.0	(90)	  9.0	(91)	  9.0	(92)	 10.0	(92)	  9.0	10.59	±6.20	
Cincinnati,OH-KY-IN	1640	365	  0	  1	 58	 10.0	(90)	  7.0	(91)	 10.0	(92)	  9.0	(92)	  9.0	11.06	±7.98	
Cleveland-Lorain-Elyria,OH	1680	365	  0	  3	 75	 15.0	(90)	 15.0	(91)	 13.0	(92)	 15.0	(92)	 15.0	16.49	±10.41	
Columbia,SC	1760	365	  0	  1	 28	  6.0	(90)	  4.0	(91)	  3.0	(92)	  4.0	(92)	  4.0	 5.78	±4.59	
Dallas,TX	1920	365	  0	  1	 40	  3.0	(90)	  3.0	(91)	  3.0	(92)	  4.0	(92)	  3.0	 5.04	±4.84	
Dayton-Springfield,OH	2000	365	  0	  1	 22	  4.0	(90)	  3.0	(91)	  3.0	(92)	  4.0	(92)	  3.0	 3.82	±3.61	
Denver,CO	2080	361	  0	  1	 13	  4.0	(88)	  4.0	(89)	  3.0	(92)	  4.0	(92)	  4.0	 4.22	±2.26	
Detroit,MI	2160	365	  0	  1	 72	  6.0	(90)	  9.0	(91)	  7.0	(92)	  7.0	(92)	  7.0	11.66	±13.03	
El Paso,TX	2320	365	  0	  1	 21	  3.0	(90)	  3.0	(91)	  1.0	(92)	  3.0	(92)	  3.0	 2.59	±1.80	
Fargo-Moorhead,ND-MN	2520	364	  0	  0	  3	  0.0	(89)	  0.0	(91)	  0.0	(92)	  0.0	(92)	  0.0	 0.21	±0.45	
Fort Lauderdale,FL	2680	359	  0	  1	 22	  1.0	(90)	  1.0	(91)	  1.0	(86)	  1.0	(92)	  1.0	 1.92	±2.59	
Gary,IN	2960	365	  0	  1	 44	 10.0	(90)	  9.0	(91)	  7.0	(92)	  9.0	(92)	  9.0	 9.85	±5.32	
Grand Rapids-Muskegon-Holland,MI	3000	328	  0	  1	 10	  1.0	(57)	  1.0	(89)	  1.0	(92)	  1.0	(90)	  1.0	 1.81	±1.46	
Great Falls,MT	3040	359	  0	  1	 32	  3.0	(86)	  3.0	(89)	  1.0	(92)	  1.0	(92)	  3.0	 3.28	±3.77	
Greensboro-Winston Salem-High Point,NC	3120	303	  0	  1	 32	  5.0	(28)	  7.0	(91)	  7.0	(92)	  7.0	(92)	  7.0	 7.53	±4.47	
Greenville-Spartanburg-Anderson,SC	3160	365	  0	  1	 26	  6.0	(90)	  3.0	(91)	  1.0	(92)	  3.0	(92)	  3.0	 4.12	±4.26	
Honolulu,HI	3320	365	  0	  1	  9	  3.0	(90)	  3.0	(91)	  3.0	(92)	  3.0	(92)	  3.0	 3.09	±1.09	
Huntington-Ashland,WV-KY-OH	3400	365	  0	  1	 29	 10.0	(90)	  4.0	(91)	  6.0	(92)	  9.5	(92)	  7.0	 8.39	±4.89	
Indianapolis,IN	3480	365	  0	  1	 57	 24.0	(90)	 25.0	(91)	 10.0	(92)	 12.0	(92)	 19.0	17.88	±9.06	
Jacksonville,FL	3600	365	  0	  1	 69	  4.0	(90)	  4.0	(91)	  4.0	(92)	  4.0	(92)	  4.0	 7.94	±9.71	
Jersey City,NJ	3640	362	  0	  1	 37	 12.0	(89)	  7.0	(91)	  7.0	(92)	  9.0	(90)	  9.0	 9.97	±5.88	
Johnson City-Kingsport-Bristol,TN-VA	3660	365	  0	  1	 60	 12.0	(90)	 10.0	(91)	  4.0	(92)	 13.0	(92)	  9.0	12.48	±10.48	
Kansas City,MO-KS	3760	365	  0	  1	 64	  9.0	(90)	  6.0	(91)	 11.0	(92)	  4.0	(92)	  7.0	10.86	±10.40	
Las Cruces,NM	4100	272	  0	  1	  3	  1.0	(90)	  1.0	(91)	  1.0	(91)	   . 	(.)	  1.0	 1.05	±0.32	
Las Vegas,NV-AZ	4120	363	  0	  1	 10	  1.0	(90)	  1.0	(89)	  1.0	(92)	  1.0	(92)	  1.0	 2.09	±2.40	
Little Rock-North Little Rock,AR	4400	365	  0	  1	 10	  4.0	(90)	  4.0	(91)	  4.0	(92)	  6.0	(92)	  4.0	 4.52	±1.32	
Los Angeles-Long Beach,CA	4480	365	  0	  1	 15	  3.0	(90)	  3.0	(91)	  4.0	(92)	  6.0	(92)	  4.0	 4.03	±2.12	
Louisville,KY-IN	4520	365	  0	  3	 68	 12.0	(90)	 12.0	(91)	  9.0	(92)	 10.0	(92)	 10.0	13.87	±10.82	
Memphis,TN-AR-MS	4920	365	  0	  4	 61	  7.0	(90)	  7.0	(91)	  9.0	(92)	  4.0	(92)	  7.0	 9.45	±7.19	
Miami,FL	5000	364	  0	  1	  1	  1.0	(89)	  1.0	(91)	  1.0	(92)	  1.0	(92)	  1.0	 1.00	±0.00	
Middlesex-Somerset-Hunterdon,NJ	5015	359	  0	  1	 22	  4.0	(88)	  3.0	(88)	  3.0	(92)	  4.0	(91)	  3.0	 4.47	±3.50	
Milwaukee-Waukesha,WI	5080	340	  0	  3	 18	  3.0	(86)	  3.0	(91)	  3.0	(74)	  3.0	(89)	  3.0	 3.85	±1.89	
Minneapolis-St. Paul,MN-WI	5120	365	  0	  1	 49	  4.0	(90)	  3.0	(91)	  3.0	(92)	  6.0	(92)	  3.0	 4.85	±5.42	
Nashville,TN	5360	359	  0	  1	 16	  4.0	(89)	  3.0	(91)	  3.0	(87)	  4.0	(92)	  4.0	 4.18	±2.22	
Nassau-Suffolk,NY	5380	365	  0	  1	 35	  9.0	(90)	  3.0	(91)	  3.0	(92)	  7.0	(92)	  4.0	 6.45	±6.46	
New Orleans,LA	5560	 26	  0	  1	  6	  1.0	(26)	   . 	(.)	   . 	(.)	   . 	(.)	  1.0	 1.92	±1.57	
New York,NY	5600	365	  0	  1	 57	 21.0	(90)	  9.0	(91)	  7.0	(92)	 15.0	(92)	 13.0	15.02	±9.89	
Newark,NJ	5640	364	  0	  1	 34	  9.0	(89)	  6.0	(91)	  6.0	(92)	  7.0	(92)	  7.0	 7.97	±5.54	
Norfolk-Virginia Beach-Newport News,VA_NC	5720	365	  0	  1	 29	  4.0	(90)	  3.0	(91)	  4.0	(92)	  7.0	(92)	  4.0	 5.50	±4.27	
Oklahoma City,OK	5880	360	  0	  1	  6	  1.0	(87)	  1.0	(91)	  1.0	(92)	  1.0	(90)	  1.0	 1.61	±1.01	
Omaha,NE-IA	5920	365	  0	  1	 34	  1.0	(90)	  3.0	(91)	  1.0	(92)	  1.0	(92)	  1.0	 2.79	±3.83	
Orlando,FL	5960	360	  0	  1	  4	  1.0	(87)	  1.0	(91)	  1.0	(92)	  1.0	(90)	  1.0	 1.25	±0.70	
Philadelphia,PA-NJ	6160	365	  0	  1	 37	 10.0	(90)	  7.0	(91)	 10.0	(92)	 11.0	(92)	 10.0	11.49	±5.72	
Phoenix-Mesa,AZ	6200	365	  0	  1	 10	  6.0	(90)	  3.0	(91)	  3.0	(92)	  4.0	(92)	  4.0	 4.18	±1.65	
Pittsburgh,PA	6280	365	  0	  6	 83	 18.0	(90)	 15.0	(91)	 18.0	(92)	 26.0	(92)	 19.0	22.09	±12.05	
Portland-Vancouver,OR-WA	6440	362	  0	  1	 12	  3.0	(90)	  1.0	(91)	  1.0	(92)	  1.0	(89)	  1.0	 1.85	±1.43	
Raleigh-Durham-Chapel Hill,NC	6640	338	  0	  1	 10	  3.0	(90)	  1.0	(86)	  1.0	(73)	  1.0	(89)	  1.0	 1.95	±1.48	
Richmond-Petersburg,VA	6760	365	  0	  1	 37	  7.0	(90)	  6.0	(91)	  4.0	(92)	  7.0	(92)	  7.0	 7.16	±4.74	
Riverside-San Bernardino,CA	6780	365	  0	  1	  7	  3.0	(90)	  3.0	(91)	  3.0	(92)	  3.0	(92)	  3.0	 3.28	±1.15	
St, Louis,MO-IL	7040	365	  0	  3	 75	 15.0	(90)	 12.0	(91)	 13.0	(92)	 16.0	(92)	 15.0	19.51	±14.67	
Salt Lake City-Ogden,UT	7160	365	  0	  1	 12	  4.0	(90)	  4.0	(91)	  4.0	(92)	  4.0	(92)	  4.0	 4.66	±1.96	
San Diego,CA	7320	365	  0	  3	 16	  6.0	(90)	  7.0	(91)	  6.0	(92)	  7.0	(92)	  6.0	 6.46	±1.68	
Scranton-Wilkes Barre-Hazleton,PA	7560	365	  0	  1	 26	  9.0	(90)	  4.0	(91)	  6.0	(92)	  7.0	(92)	  6.0	 7.53	±4.85	
Seattle-Bellevue-Everett,WA	7600	 25	  0	  1	  4	  1.0	(25)	   . 	(.)	   . 	(.)	   . 	(.)	  1.0	 1.92	±1.19	
Shreveport-Bossier City,LA	7680	358	  0	  1	 10	  4.0	(89)	  3.0	(88)	  3.0	(89)	  6.0	(92)	  4.0	 3.91	±1.98	
Sioux Falls,SD	7760	346	  0	  1	  4	  1.0	(90)	  1.0	(72)	  1.0	(92)	  1.0	(92)	  1.0	 1.11	±0.47	
Tampa-St. Petersburg-Clearwater,FL	8280	365	  0	  1	 57	  7.0	(90)	  6.0	(91)	  9.0	(92)	  7.0	(92)	  7.0	 9.37	±7.53	
Toledo,OH	8400	365	  0	  1	 31	  4.0	(90)	  6.0	(91)	  9.0	(92)	  7.0	(92)	  6.0	 7.41	±5.41	
Tucson,AZ	8520	364	  0	  1	  6	  1.0	(90)	  1.0	(91)	  1.0	(91)	  1.0	(92)	  1.0	 1.12	±0.52	
Tulsa,OK	8560	365	  0	  1	 57	  9.5	(90)	  9.0	(91)	  7.0	(92)	  7.0	(92)	  7.0	10.66	±8.71	
Washington,DC-MD-VA-WV	8840	365	  0	  3	 56	 12.0	(90)	  9.0	(91)	  6.0	(92)	  9.0	(92)	  9.0	 9.55	±4.68	
West Palm Beach-Boca Raton,FL	8960	363	  0	  1	  3	  1.0	(90)	  1.0	(89)	  1.0	(92)	  1.0	(92)	  1.0	 1.15	±0.53	
Wilmington-Newark,DE-MD	9160	365	  0	  1	 68	 15.0	(90)	  9.0	(91)	  7.0	(92)	 10.0	(92)	 10.0	12.31	±9.52	
Wilmington,NC	9200	355	  0	  1	 47	  4.0	(87)	  6.0	(91)	  4.0	(85)	  6.0	(92)	  6.0	 7.43	±6.46	
Youngstown-Warren,OH	9320	365	  0	  1	 57	 10.0	(90)	  6.0	(91)	  6.0	(92)	  6.0	(92)	  7.0	 8.88	±7.29	
Yuma,AZ	9360	318	  0	  1	  7	  1.0	(43)	  3.0	(91)	  3.0	(92)	  3.0	(92)	  3.0	 2.42	±0.98