Days of Monitoring
(n)	Daily AQI >100	Days with >=1 Pollutant with AQI >100	Range	Quarterly Medians	Annual	Annual	
MSA Name	MSA Code	CO	O3	PM10	PM2.5	SO2	(days)	1 Pollutant	2 Pollutants	Min	Max	Q1	Q2	Q3	Q4	Median	Mean	±SD	
Albuquerque,NM	 200	365	365	365	362	  0	  6	  5	  1	 26	169	 40.5	 63.0	 56.5	 57.0	 55.0	56.81	±18.48	
Atlanta,GA	 520	365	246	342	361	365	 19	 16	  3	 16	174	 45.5	 56.0	 64.0	 49.0	 53.0	57.24	±23.64	
Augusta-Aiken,GA	 600	  0	355	 60	126	  0	  4	  4	  0	  6	112	 31.0	 47.0	 42.5	 31.0	 38.0	42.24	±19.57	
Austin-San Marcos,TX	 640	362	365	 61	 22	195	  3	  3	  0	  3	109	 26.0	 41.0	 37.0	 31.0	 32.0	36.22	±16.15	
Baltimore,MD	 720	365	276	363	364	363	 25	 20	  5	 12	172	 53.5	 48.0	 62.0	 42.5	 52.0	55.94	±26.05	
Bergen-Passaic,NJ	 875	365	365	 44	117	364	 14	 13	  1	  7	140	 28.0	 38.0	 42.0	 22.0	 33.0	38.62	±22.91	
Birmingham,AL	1000	365	365	365	364	365	 33	 29	  4	 24	145	 57.0	 64.0	 71.5	 67.0	 66.0	67.65	±22.53	
Bismarck,ND	1010	  0	 88	136	117	266	  0	  0	  0	  1	 65	  7.0	  6.0	 19.0	 19.0	 15.0	14.81	±11.47	
Boise City,ID	1080	365	154	362	121	  0	  4	  4	  0	  7	132	 29.5	 34.0	 42.5	 26.0	 33.0	35.61	±18.24	
Casper,WY	1350	  0	  0	 91	  0	  0	  0	  0	  0	  4	 41	 10.5	 13.0	 18.0	   . 	 14.0	15.09	±7.77	
Charleston-North Charleston,SC	1440	326	365	338	365	365	  4	  4	  0	 11	104	 41.0	 45.0	 42.5	 35.5	 41.0	43.90	±17.64	
Charleston,WV	1480	  0	214	364	122	361	  4	  4	  0	  6	106	 22.0	 43.0	 47.0	 23.5	 37.0	38.64	±21.30	
Charlotte-Gastonia-Rock Hill,NC-SC	1520	364	292	 61	361	364	 18	 17	  1	 15	166	 43.0	 53.0	 65.0	 42.0	 52.0	53.94	±22.83	
Cheyenne,WY	1580	  0	  0	104	107	  0	  0	  0	  0	  4	 33	 13.0	 14.0	 17.5	  9.5	 14.0	14.86	±7.28	
Chicago,IL	1600	365	365	365	341	365	 23	 21	  2	 16	172	 54.5	 46.0	 55.5	 51.0	 52.0	56.42	±25.82	
Cincinnati,OH-KY-IN	1640	365	246	354	132	365	 18	 16	  2	  8	172	 29.0	 48.0	 60.0	 28.0	 43.0	47.82	±28.53	
Cleveland-Lorain-Elyria,OH	1680	365	215	365	140	365	 23	 21	  2	  9	185	 49.0	 56.0	 55.0	 35.0	 49.0	53.95	±27.32	
Columbia,SC	1760	354	365	365	351	365	 11	 10	  1	 18	129	 44.5	 52.0	 53.5	 43.5	 49.0	51.48	±18.88	
Columbus,OH	1840	365	215	362	110	358	 12	 12	  0	  3	154	 21.5	 47.0	 52.5	 24.5	 40.0	43.29	±25.78	
Dallas,TX	1920	354	365	 61	364	365	 32	 32	  0	 19	159	 39.5	 50.0	 66.0	 38.0	 46.0	54.52	±26.97	
Denver,CO	2080	365	365	365	359	363	  2	  2	  0	 19	116	 46.5	 47.0	 49.0	 41.5	 47.0	50.04	±16.09	
Des Moines,IA	2120	365	215	259	350	  0	  4	  4	  0	  5	117	 39.0	 39.0	 39.5	 31.5	 38.0	40.22	±18.25	
Detroit,MI	2160	365	273	343	365	365	 24	 22	  2	 16	160	 54.5	 49.0	 53.0	 49.5	 52.0	56.31	±27.53	
Dover,DE	2190	  0	215	  0	122	  0	  2	  2	  0	  2	106	 45.0	 41.0	 41.0	 28.0	 39.0	43.45	±19.08	
Fargo-Moorhead,ND-MN	2520	  0	362	361	118	361	  0	  0	  0	 10	 70	 29.0	 35.0	 31.5	 22.0	 29.0	30.03	±9.92	
Fort Lauderdale,FL	2680	358	358	349	333	322	  0	  0	  0	 13	 95	 32.5	 35.0	 27.5	 29.0	 31.0	32.65	±11.53	
Fort Worth-Arlington,TX	2800	365	365	 57	364	  0	 27	 27	  0	 20	182	 39.0	 51.0	 59.0	 38.0	 45.0	53.50	±27.37	
Grand Rapids-Muskegon-Holland,MI	3000	365	184	 61	365	347	 19	 14	  5	  6	172	 47.5	 44.0	 46.0	 31.0	 42.0	49.10	±27.72	
Greensboro-Winston Salem-High Point,NC	3120	364	215	364	364	293	  6	  6	  0	 11	124	 39.0	 49.0	 59.0	 38.5	 48.0	50.22	±20.52	
Greenville-Spartanburg-Anderson,SC	3160	365	365	340	365	364	  5	  5	  0	 12	122	 43.5	 50.0	 58.0	 48.0	 52.0	52.64	±18.74	
Honolulu,HI	3320	365	363	365	361	365	  2	  1	  1	  9	164	 25.5	 20.0	 16.0	 21.0	 20.0	22.28	±12.20	
Houston,TX	3360	362	364	127	330	363	 40	 40	  0	 14	197	 43.0	 64.0	 67.0	 50.0	 53.0	62.25	±31.27	
Huntington-Ashland,WV-KY-OH	3400	  0	246	 64	130	365	  7	  7	  0	  4	113	 32.0	 47.0	 53.5	 24.0	 41.0	43.49	±22.69	
Indianapolis,IN	3480	365	184	 67	363	365	 18	 16	  2	  8	146	 51.0	 50.0	 66.5	 42.5	 53.0	55.33	±23.56	
Jackson,MS	3560	363	246	  0	120	361	  1	  1	  0	  3	119	 24.0	 40.0	 38.0	 24.5	 35.0	33.60	±18.81	
Jersey City,NJ	3640	364	364	 58	115	365	 10	 10	  0	 10	129	 27.0	 34.0	 34.5	 22.5	 30.0	36.71	±21.45	
Kansas City,MO-KS	3760	365	365	 89	348	365	 15	 15	  0	 13	177	 47.5	 48.0	 54.0	 39.5	 48.0	52.47	±22.90	
Las Cruces,NM	4100	358	365	365	122	350	 13	 13	  0	 19	501	 36.0	 53.0	 51.0	 55.5	 50.0	54.28	±30.62	
Las Vegas,NV-AZ	4120	365	365	365	348	350	 10	 10	  0	 25	181	 39.0	 54.0	 59.0	 53.0	 51.0	55.01	±20.05	
Lincoln,NE	4360	358	215	  0	120	  0	  0	  0	  0	  5	 91	 14.0	 34.0	 27.5	 17.0	 26.0	26.53	±14.05	
Little Rock-North Little Rock,AR	4400	365	365	 61	357	363	 10	  9	  1	 11	122	 38.5	 48.0	 62.5	 43.0	 47.0	51.76	±20.60	
Los Angeles-Long Beach,CA	4480	365	365	362	365	365	 78	 76	  2	 24	207	 45.0	 57.0	 98.5	 64.5	 63.0	73.89	±36.35	
Louisville,KY-IN	4520	365	246	365	365	365	 15	 13	  2	 14	135	 45.0	 54.0	 65.0	 49.0	 54.0	56.08	±22.59	
Memphis,TN-AR-MS	4920	365	365	 61	365	365	 15	 10	  5	 19	156	 37.0	 54.0	 67.0	 45.0	 49.0	53.90	±23.39	
Miami,FL	5000	363	365	 60	355	328	  0	  0	  0	 13	 77	 36.0	 39.0	 31.0	 32.5	 35.0	36.56	±11.72	
Middlesex-Somerset-Hunterdon,NJ	5015	361	365	  0	108	365	 15	 15	  0	  9	140	 32.0	 41.0	 45.0	 24.5	 35.0	40.59	±22.91	
Milwaukee-Waukesha,WI	5080	365	365	321	144	360	 17	 15	  2	  8	164	 30.0	 39.0	 44.5	 30.5	 38.0	44.10	±24.70	
Minneapolis-St. Paul,MN-WI	5120	365	365	280	124	365	  4	  4	  0	 10	154	 30.0	 42.0	 38.0	 25.0	 34.0	38.31	±17.76	
Monmouth-Ocean,NJ	5190	365	238	  0	118	  0	 16	 16	  0	  3	159	 13.0	 41.0	 42.5	 22.0	 34.0	36.68	±27.06	
Nashville,TN	5360	365	246	 60	365	362	 11	  9	  2	 14	140	 41.0	 50.0	 59.0	 42.5	 48.0	51.42	±20.89	
Nassau-Suffolk,NY	5380	365	365	 14	124	365	 10	 10	  0	  9	142	 32.0	 38.0	 40.0	 29.0	 34.0	40.09	±20.92	
New Orleans,LA	5560	349	365	 39	350	338	  5	  5	  0	 19	138	 38.0	 49.0	 47.5	 53.0	 46.0	49.15	±18.39	
New York,NY	5600	365	365	 16	365	365	 16	 14	  2	 11	192	 49.0	 43.0	 50.5	 40.5	 45.0	51.27	±24.75	
Newark,NJ	5640	365	365	  0	336	365	 11	 11	  0	 11	116	 44.0	 45.0	 49.5	 37.0	 45.0	48.56	±20.39	
Norfolk-Virginia Beach-Newport News,VA_NC	5720	365	215	 57	328	365	  1	  1	  0	  4	104	 36.0	 45.0	 51.0	 32.0	 42.0	43.36	±18.37	
Oklahoma City,OK	5880	365	365	 60	365	347	  4	  4	  0	  9	124	 36.0	 44.0	 48.0	 31.5	 41.0	43.96	±16.73	
Omaha,NE-IA	5920	365	215	365	352	365	  1	  1	  0	 11	123	 46.5	 48.0	 47.5	 40.0	 44.0	46.72	±17.79	
Orange County,CA	5945	365	365	 62	339	358	  9	  9	  0	 23	129	 39.0	 42.0	 49.0	 52.5	 44.0	49.15	±17.85	
Orlando,FL	5960	365	365	348	363	355	  5	  4	  1	 14	135	 36.5	 45.0	 38.0	 32.0	 37.0	40.04	±17.07	
Philadelphia,PA-NJ	6160	365	365	365	358	365	 22	 19	  3	  9	150	 52.0	 48.0	 59.0	 42.5	 50.0	54.47	±24.36	
Phoenix-Mesa,AZ	6200	365	365	365	134	365	 36	 34	  2	 25	140	 49.0	 72.0	 66.5	 77.5	 67.0	68.60	±22.48	
Pittsburgh,PA	6280	365	365	365	365	365	 48	 39	  9	 12	171	 56.0	 60.0	 70.5	 51.5	 58.0	65.85	±31.76	
Portland-Vancouver,OR-WA	6440	365	165	 63	122	316	  3	  3	  0	  8	150	 28.0	 26.0	 33.0	 26.5	 27.0	31.60	±17.75	
Provo-Orem,UT	6520	365	154	359	348	  0	  6	  6	  0	  5	169	 30.0	 38.0	 45.5	 27.0	 38.0	40.34	±22.13	
Raleigh-Durham-Chapel Hill,NC	6640	364	365	335	364	273	  8	  8	  0	 14	135	 39.5	 51.0	 58.0	 38.0	 46.0	49.82	±20.12	
Rapid City,SD	6660	  0	231	351	125	  0	  1	  1	  0	  5	101	 31.0	 38.0	 41.0	 34.0	 37.0	38.86	±16.04	
Reno,NV	6720	365	365	335	123	  0	  4	  4	  0	 20	146	 51.5	 42.0	 48.5	 38.0	 46.0	48.01	±16.00	
Richmond-Petersburg,VA	6760	365	215	  0	345	365	  6	  6	  0	  7	151	 37.0	 45.0	 57.0	 37.0	 43.0	47.21	±21.59	
Riverside-San Bernardino,CA	6780	365	365	362	340	365	106	103	  3	 30	209	 45.5	 82.0	116.0	 71.5	 76.0	84.02	±42.31	
St, Louis,MO-IL	7040	365	365	365	365	365	 43	 36	  7	 16	164	 63.0	 66.0	 79.0	 62.0	 66.0	69.29	±25.20	
Salt Lake City-Ogden,UT	7160	365	154	365	363	365	 31	 31	  0	 10	159	 48.0	 42.0	 51.5	 45.0	 46.0	52.83	±27.79	
San Antonio,TX	7240	365	365	331	  0	  0	  4	  4	  0	 13	116	 30.0	 44.0	 38.0	 33.5	 35.0	38.82	±16.65	
San Diego,CA	7320	365	365	 83	361	365	  9	  9	  0	 23	111	 41.0	 48.0	 54.0	 56.0	 49.0	54.52	±17.63	
Santa Fe,NM	7490	360	  0	 60	121	  0	  0	  0	  0	  3	 35	 10.0	  5.0	  5.0	  9.0	  8.0	 9.22	±6.00	
Seattle-Bellevue-Everett,WA	7600	365	154	365	362	319	  1	  1	  0	 11	104	 35.5	 27.0	 29.0	 32.5	 30.0	34.68	±16.18	
Sioux Falls,SD	7760	  0	365	357	126	365	  0	  0	  0	  9	 79	 29.0	 40.0	 37.0	 23.0	 31.0	33.20	±12.50	
Spokane,WA	7840	365	154	357	127	  0	  1	  1	  0	  9	103	 38.0	 32.0	 38.0	 26.0	 33.0	35.65	±16.06	
Tacoma,WA	8200	327	365	 87	120	  0	  3	  3	  0	 16	111	 34.0	 31.0	 29.5	 30.0	 32.0	35.07	±14.30	
Tampa-St. Petersburg-Clearwater,FL	8280	365	365	365	365	365	  5	  3	  2	 20	116	 41.0	 49.0	 44.0	 38.0	 42.0	45.12	±16.49	
Topeka,KS	8440	  0	  0	 56	120	  0	  0	  0	  0	  8	 99	 42.0	 29.0	 33.0	 26.0	 32.0	36.65	±18.19	
Tucson,AZ	8520	365	365	365	338	365	  1	  1	  0	 20	106	 34.5	 47.0	 43.0	 45.0	 43.0	44.34	±12.01	
Tulsa,OK	8560	338	365	 64	365	365	  6	  6	  0	  9	129	 38.5	 45.0	 59.0	 36.0	 42.0	47.32	±19.54	
Washington,DC-MD-VA-WV	8840	365	365	 63	365	365	 22	 20	  2	 14	140	 48.0	 49.0	 68.5	 42.0	 52.0	55.34	±24.06	
Wichita,KS	9040	365	353	365	120	  0	  1	  1	  0	  8	104	 28.5	 41.0	 41.5	 24.5	 35.0	36.57	±15.00	
Wilmington-Newark,DE-MD	9160	365	364	359	354	365	 13	 12	  1	 13	166	 53.0	 43.0	 56.0	 39.5	 47.0	51.18	±22.81	
Wilmington,NC	9200	  0	215	  0	114	365	  0	  0	  0	  1	100	  9.0	 43.0	 32.5	 16.0	 27.0	27.53	±18.54