Number of Days Exceeding Federal and State Air Quality Standards per Year

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Number of Days Exceeding Federal & State Air Quality Standards per Year
Los Angeles County
Tables are for Los Angeles County portions of the South Coast & Mojave Desert Air Quality Management Districts

Los Angeles County Portion of South Coast Air Quality Management District (Map)

Year	Ozone		Respirable Particle Matter (Pm¹⁰)		Carbon Monoxide
Year	Days Above State 8-Hr. Standard (0.07 ppm)*	Days Above Federal 8-Hr. Standard (0.075 ppm)*	Calculated Days Above State 24-Hr. Standard (50 ug/m³)**	Calculated Days Above Federal 24-Hr. Standard (150 ug/m³)**	Days Above State 8-Hr. Standard (9.0 ppm)*	Days Above Federal 8-Hr. Standard (9.0 ppm)*
2007	72	6	31	6	0	0
2006	101	25	47	0	0	0
2005	90	16	112	0	0	0
2004	102	17	76	0	0	0
2003	113	49	118	0	0	0
2002	106	36	71	0	1	1
2001	79	35	119	0	0	0
2000	76	27	92	0	6	3
Year	Ozone		Respirable Particle Matter (Pm¹⁰)		Carbon Monoxide
Year	Days Above State 8-Hr. Standard (0.07 ppm)*	Days Above Federal 8-Hr. Standard (0.075 ppm)*	Calculated Days Above State 24-Hr. Standard (50 ug/m³)**	Calculated Days Above Federal 24-Hr. Standard (150 ug/m³)**	Days Above State 8-Hr. Standard (9.0 ppm)*	Days Above Federal 8-Hr. Standard (9.0 ppm)*
1999	58	19	213	0	11	7
1998	71	46	67	0	13	10
1997	101	43	149	0	18	13
1996	114	68	153	0	26	19
1995	132	92	143	6	17	14
1994	138	118	145	0	27	19
1993	156	108	155	0	29	19
1992	172	139	146	11	39	34
1991	151	128	183	0	51	41
1990	157	131	187	6	49	41
Year	Ozone		Respirable Particle Matter (Pm¹⁰)		Carbon Monoxide
Year	Days Above State 8-Hr. Standard (0.07 ppm)*	Days Above Federal 8-Hr. Standard (0.075 ppm)*	Calculated Days Above State 24-Hr. Standard (50 ug/m³)**	Calculated Days Above Federal 24-Hr. Standard (150 ug/m³)**	Days Above State 8-Hr. Standard (9.0 ppm)*	Days Above Federal 8-Hr. Standard (9.0 ppm)*
1989	192	150	249	6	70	67
1988	201	181	246	0	70	63
1987	---	158	228	6	43	39
1986	---	177	---	---	55	48
1985	---	164	---	---	62	52
1984	---	160	---	---	72	66
1983	---	154	---	---	59	52
1982	---	153	---	---	71	69
1981	---	---	---	---	81	73
1980	---	---	---	---	98	94

Los Angeles County Portion of Mojave Desert Air Quality Management District (Map)

Year	Ozone		Respirable Particle Matter (Pm¹⁰)		Carbon Monoxide
Year	Days Above State 8-Hr. Standard (0.07 ppm)*	Days Above Federal 8-Hr. Standard (0.075 ppm)*	Calculated Days Above State 24-Hr. Standard (50 ug/m³)**	Calculated Days Above Federal 24-Hr. Standard (150 ug/m³)**	Days Above State 8-Hr. Standard (9.0 ppm)*	Days Above Federal 8-Hr. Standard (9.0 ppm)*
2007	63	42	18	7	0	0
2006	66	39	26	0	0	0
2005	73	60	---	0	0	0
2004	85	59	---	0	0	0
2003	92	64	6	0	0	0
2002	87	69	6	0	0	0
2001	37	3	---	---	0	0
2000	79	59	---	---	0	0
Year	Ozone		Respirable Particle Matter (Pm¹⁰)		Carbon Monoxide
Year	Days Above State 8-Hr. Standard (0.07 ppm)*	Days Above Federal 8-Hr. Standard (0.075 ppm)*	Calculated Days Above State 24-Hr. Standard (50 ug/m³)**	Calculated Days Above Federal 24-Hr. Standard (150 ug/m³)**	Days Above State 8-Hr. Standard (9.0 ppm)*	Days Above Federal 8-Hr. Standard (9.0 ppm)*
1999	8	4	13	0	0	0
1998	53	36	12	0	0	0
1997	32	19	9	0	0	0
1996	58	43	12	0	0	0
1995	121	101	---	0	0	0
1994	78	63	---	---	0	0
1993	75	57	58	0	0	0
1992	101	83	---	0	0	0
1991	90	73	---	13	0	0
1990	76	60	---	---	0	0
Year	Ozone		Respirable Particle Matter (Pm¹⁰)		Carbon Monoxide
Year	Days Above State 8-Hr. Standard (0.07 ppm)*	Days Above Federal 8-Hr. Standard (0.075 ppm)*	Calculated Days Above State 24-Hr. Standard (50 ug/m³)**	Calculated Days Above Federal 24-Hr. Standard (150 ug/m³)**	Days Above State 8-Hr. Standard (9.0 ppm)*	Days Above Federal 8-Hr. Standard (9.0 ppm)*
1989	119	96	---	---	0	0
1988	123	109	---	---	0	0
1987	---	---	---	---	0	0
1986	---	---	---	---	0	0
1985	---	---	---	---	0	0
1984	---	---	---	---	0	0
1983	---	---	---	---	0	0
1982	---	---	---	---	0	0
1981	---	---	---	---	0	0
1980	---	---	---	---	0	0

* ppm - parts per million
** Tiny solid or liquid particles of soot, dust, smoke, fumes, or mists. The size of the particles (10 microns or smaller, about
0.0004 inches or less) allows them to enter the air sacs deep in the lungs where they may be deposited to the result in
adverse health effects. Also causes visibility reduction. Data listed here are reported as 24-hour average concentrations in
ug/m³ (weight of particles in micrograms per one cubic meter of air).

Source: California Air Resources Board

Smog Kills. According to the South Coast Air Quality Management District, an estimated 1,600 people die prematurely
each year in the greater Los Angeles region due to smog. Thousands more suffer temporary or long-term health effects
and millions more are at least inconvenienced.

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