Virginia

• Fairfax County
• Washington-Baltimore-Northern Virginia, DC-MD-VA-WV

If you live in Fairfax County, the air you breathe may put your health at risk.

Ozone

Particle Pollution 24-hour

Particle Pollution Annual

You can make a difference in the air that you breathe.

Tell your member of Congress to protect your health: Don’t weaken the Clean Air Act.

Tell us why having healthy air matters to you.

Tell your friends about the air where you live.

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High Ozone Days		Learn More
Ozone Grade:	F	How is my grade calculated?
Weighted Average:	8.7	Change Since 1996: 37.2 8.7 fewer days this year
View Orange, Red, and Purple Ozone Days Orange Ozone Days: 23 What do the colors mean? Red Ozone Days: 2 What do the colors mean? Purple Ozone Days: 0 What do the colors mean?
Particle Pollution - 24 Hour		Learn More
Grade:	B	How is my grade calculated?
Weighted Average:	0.7	Change Since 2000: 2.3 0.7 fewer days this year
View Orange, Red, and Purple Particle Pollution Days Orange Particle Days: 2 What do the colors mean? Red Particle Days: 0 What do the colors mean? Purple Particle Days: 0 What do the colors mean?
Particle Pollution - Annual		Learn More
Grade:	Pass	How is my grade calculated?
Design Value	10.3	Change Since 2000: 13.9 10.3 µg/m3
Groups At Risk		Learn More
Total Population:	1,081,726	Risks to the population
Pediatric Asthma:	21,675	Risks to people with Asthma
Adult Asthma:	68,772	Risks to people with Asthma
Chronic Bronchitis:	34,750	Risks to people with Chronic Bronchitis
Emphysema:	14,023	Risks to people with Emphysema
Cardiovascular Disease:	256,450	Risks to people with Cardiovascular Disease
Diabetes:	68,162	Risks to people with Diabetes
Children Under 18:	262,648	Risks to children and teens
Adults 65 & Over:	106,290	Risks to older adults
Poverty Estimate:	63,915	Risks to people with low incomes

Fairfax

51059

F

23

2

0

B

0.7

2

0

0

Pass

10.3

1081726

262648

106290

21675

68772

34750

14023

746

256450

68162

63915

37.2

42.3

37.3

31.5

33.8

33.5

28.8

21

26.3

28.8

23.3

13.7

8.7

2.3

2.3

2.7

7

6.7

6.3

3.3

2.3

0.7

13.9

14

13.9

14.1

13.9

13.7

12.7

11.7

10.3

The air you breathe needs your support.

You can make a difference in the air that you breathe.

Tell your member of Congress to protect your health: Don’t weaken the Clean Air Act.

Tell us why having healthy air matters to you.

Tell your friends about the air where you live.

• Email
• Facebook
• Twitter

Stafford	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	stafford-51179.html	51179	2.0	C	6	0	0	DNC	0	0	0	0		Dnc	0	128961	37197	9464	3070	7691	3821	1441	89	27465	7190	6531	22.5	31.5	27	22	16.2	15.5	11	7.2	8.2	10.3	7	3.7	2.0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Prince William	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	prince-william-51153.html	51153	1.3	C	4	0	0	DNC	0	0	0	0		Dnc	0	402002	116175	27220	9587	23862	11644	4221	278	82070	21252	24696	20.7	25.3	21.8	15.5	16	15.8	12.8	3.7	4.8	5	5.7	2.3	1.3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Prince George's	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	prince-george-s-24033.html	24033	11.5	F	33	1	0	C	2.0	6	0	0		Pass	11.5	863420	205999	81513	24398	55460	27287	10675	563	197884	55927	79203	44.2	49	38.3	29.8	28.2	28.7	22.7	17	21.7	25.8	22.8	12.8	11.5	3	1.7	2	2.7	3	2.7	2.3	1.3	2.0	17.4	0	0	13.2	13.1	12.8	11.9	12.4	11.5
Montgomery	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	montgomery-24031.html	24031	3.3	F	10	0	0	B	0.7	2	0	0		Pass	10.3	971777	233530	119769	27658	61782	31998	13891	634	243139	69620	72259	31	34	27.5	19.8	18.5	17.5	13.3	8.8	10.3	12.5	11	7.5	3.3	1.3	1	1	1.3	1	1	0.7	0.7	0.7	13.4	12.6	12.5	12.7	12.5	12.2	11.3	10.7	10.3
Loudoun	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	loudoun-51107.html	51107	4.5	F	12	1	0	B	0.7	2	0	0		Pass	10.3	312311	95434	20425	7876	18105	8829	3192	215	62169	16089	11525	0	0	26.7	18.8	24.2	26.2	22	8.2	9.7	11.5	12.3	7.5	4.5	1.3	1	1	2.7	1.7	1.7	1	1	0.7	13.8	13.6	13.5	13.9	13.6	13.2	12.2	11.2	10.3
Harford	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	harford-24025.html	24025	19.2	F	47	7	0	A	0.0	0	0	0		Pass	10.1	244826	60410	30564	7155	15428	8092	3566	160	62047	17805	16715	42	45	37.3	35.3	41.2	39.7	33.3	22.8	24.7	26.2	24.2	19.3	19.2	1.5	1.2	1.3	2.5	1.7	1.3	0.3	0	0.0	0	12.8	12.5	12.9	12.6	12.4	11.7	11	10.1
Frederick	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	frederick-24021.html	24021	3.3	F	10	0	0	DNC	0	0	0	0		Dnc	0	233385	59044	25914	6993	14641	7538	3194	153	56829	16230	12884	0	0	26.5	26.2	21.3	19.3	12.2	8.3	10	14	10.7	7	3.3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Frederick	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	frederick-51069.html	51069	1.0	C	3	0	0	A	0.0	0	0	0		Pass	11.1	78305	19675	9954	1624	4938	2561	1132	54	19620	5323	5756	17.3	21.3	18.7	12.7	13.5	13.2	9.2	3	2	2	1.7	1	1.0	0	0	0	0	0	0	0	0	0.0	0	0	0	0	0	0	0	0	11.1
Fauquier	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	fauquier-51061.html	51061	0.3	B	1	0	0	DNC	0	0	0	0		Dnc	0	65203	16445	8289	1357	4129	2184	983	45	16973	4635	4839	14.2	19.8	18.2	12	8	8.5	6.8	2.5	2	1.3	1.7	0.3	0.3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
District Of Columbia	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	district-of-columbia-11001.html	11001	9.8	F	25	3	0	D	2.3	7	0	0		Pass	11.2	601723	100815	68809	18103	51962	20256	7928	356	145311	38688	107279	32.7	41.5	36.3	29.3	28.2	25.3	19.7	10.3	14.8	19.3	17.7	10.7	9.8	11.8	10	6.3	11	9.5	7.5	4.8	2.7	2.3	16.4	15.8	15.1	14.8	14.5	14.2	13.1	12.1	11.2
Charles	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	charles-24017.html	24017	5.3	F	16	0	0	DNC	0	0	0	0		Dnc	0	146551	38884	13852	4605	9082	4574	1845	96	33772	9588	9077	36.2	48	40.5	29.2	22.5	20.7	16.7	11	10.8	14.2	11.7	8.5	5.3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Carroll	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	carroll-24013.html	24013	4.2	F	11	1	0	DNC	0	0	0	0		Dnc	0	167134	41237	21809	4884	10520	5609	2528	110	43538	12532	8873	30.5	33	30.7	26.5	23.8	20.3	13.2	8	8.3	13.5	12.3	9.8	4.2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Calvert	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	calvert-24009.html	24009	5.3	F	13	2	0	DNC	0	0	0	0		Dnc	0	88737	23231	9683	2751	5507	2884	1238	58	21968	6288	5432	17.5	21.2	20.2	16.3	0	0	0	0	0	9.7	8.3	5.3	5.3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Baltimore City	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	baltimore-city-24510.html	24510	1.2	C	2	1	0	F	4.7	14	0	0		Pass	11.6	620961	133560	72812	15818	40856	20375	8404	404	150407	42755	147556	20	19	0	0	0	9.3	0	0	0	0	1.7	1	1.2	12	12.3	10.5	20	16.7	13	8.3	4.3	4.7	17	16.6	16.3	16.6	15.9	15.6	14	12.9	11.6
Baltimore	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	baltimore-24005.html	24005	11.3	F	28	4	0	D	3.0	9	0	0		Pass	11.7	805029	176750	117476	20933	52259	27501	12505	524	212641	61205	64494	27.3	34.8	30.2	27.7	30.5	28.5	22.7	14.8	19.3	19.2	16.7	9.5	11.3	6.8	6.5	5	11.2	9	8.3	5.7	4.7	3.0	15.1	15.2	14.9	15.1	14.8	14.5	13.6	12.6	11.7
Arlington	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	arlington-51013.html	51013	7.8	F	22	1	0	B	0.3	1	0	0		Pass	10.8	207627	32626	18054	2692	14474	6829	2397	143	46820	11953	14903	23.8	32	25.7	24	24.7	24.7	20.8	13	15.7	18.3	15.2	9.8	7.8	1.3	1	1.3	2.7	1.7	1.3	0.7	1	0.3	14.9	14.6	14.5	14.6	14.2	14	12.9	11.9	10.8
Anne Arrundel	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	anne-arundel-24003.html	24003	8.5	F	21	3	0	C	1.0	3	0	0		Pass	11.6	537656	125061	63664	14812	34592	17788	7591	352	134216	38353	34484	59.7	66	56	41.3	39.2	36.2	29.7	17	16	17.7	16.3	11.5	8.5	4.5	2.7	2.8	4	3	2.3	1.3	1.3	1.0	15.8	15.3	15.2	15.3	14.9	14.3	13.3	12.4	11.6
Alexandria City	Washington-Baltimore-Northern Virginia, DC-MD-VA-WV	Washington-Baltimore-Northern-Virginia-DC-MD-VA-WV.html	alexandria-city-51510.html	51510	4.3	F	13	0	0	Inc	0	0	0	0		Inc	0	139966	23970	12806	1978	9633	4633	1696	96	32464	8391	12898	16.3	23.3	18.5	13.8	14.5	15.2	13.2	7.8	10.7	12.2	9.8	4.7	4.3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Ranked 13 for high ozone days out of 277 metropolitan areas Ranked 22 for 24-hour particle pollution out of 277 metropolitan areas Ranked 56 for annual particle pollution out of 277 metropolitan areas Take Action | Support Clean Air | Local Air Quality Contact Your Local Lung Association: Maryland, District of Columbia, Virginia, West Virginia Compare Your Air Select Your State Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Select your City Albany, GA Albany-Corvallis-Lebanon, OR Albany-Schenectady-Amsterdam, NY Albuquerque, NM Alexandria, LA 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Falls, NY Rockford-Freeport-Rochelle, IL Rocky Mount, NC Rome, GA Sacramento--Arden-Arcade--Yuba City, CA-NV Saginaw-Bay City-Saginaw Township North, MI Salem, OR Salinas, CA Salisbury-Ocean Pines, MD Salt Lake City-Ogden-Clearfield, UT San Antonio-New Braunfels, TX San Diego-Carlsbad-San Marcos, CA San Jose-San Francisco-Oakland, CA San Luis Obispo-Paso Robles, CA Santa Barbara-Santa Maria-Goleta, CA Santa Fe-Espanola, NM Sarasota-Bradenton-Punta Gorda, FL Savannah-Hinesville-Fort Stewart, GA Scranton--Wilkes-Barre, PA Seattle-Tacoma-Olympia, WA Sheboygan, WI Shreveport-Bossier City-Minden, LA Sioux City-Vermillion, IA-NE-SD Sioux Falls, SD South Bend-Elkhart-Mishawaka, IN-MI Spokane, WA Springfield, IL Springfield, MA Springfield, MO St. George, UT St. Joseph, MO-KS St. Louis-St. Charles-Farmington, MO-IL State College, PA Steubenville-Weirton, OH-WV Stockton, CA Syracuse-Auburn, NY Tallahassee, FL Tampa-St. Petersburg-Clearwater, FL Terre Haute, IN Texarkana, TX-Texarkana, AR Toledo-Fremont, OH Topeka, KS Tucson, AZ Tulsa-Bartlesville, OK Tuscaloosa, AL Tyler-Jacksonville, TX Utica-Rome, NY Valdosta, GA Victoria, TX Virginia Beach-Norfolk-Newport News, VA-NC Visalia-Porterville, CA Waco, TX Washington-Baltimore-Northern Virginia, DC-MD-VA-WV Waterloo-Cedar Falls, IA Wausau-Merrill, WI Wenatchee-East Wenatchee, WA Wheeling, WV-OH Wichita-Winfield, KS Williamsport-Lock Haven, PA Wilmington, NC Yakima, WA York-Hanover-Gettysburg, PA Youngstown-Warren-East Liverpool, OH-PA Yuma, AZ
High Ozone Days	Learn More
	Change Since This County: Fairfax, VA Other counties with monitors in this metropolitan area There are no other counties in this metropolitan area What is my length? 19 Alexandria City, VA Anne Arrundel, MD Arlington, VA Baltimore, MD Baltimore City, MD Calvert, MD Carroll, MD Charles, MD Washington, DC Fauquier, VA Frederick, MD Frederick, VA Harford, MD Loudoun, VA Montgomery, MD Prince George's, MD Prince William, VA Stafford, VA A B C D F DNC INC
Particle Pollution - 24 Hour	Learn More
	Change Since This County: Fairfax, VA Other counties with monitors in this metropolitan area There are no other counties in this metropolitan area Alexandria City, VA Anne Arrundel, MD Arlington, VA Baltimore, MD Baltimore City, MD Calvert, MD Carroll, MD Charles, MD Washington, DC Fauquier, VA Frederick, MD Frederick, VA Harford, MD Loudoun, VA Montgomery, MD Prince George's, MD Prince William, VA Stafford, VA A B C D F DNC INC
Particle Pollution - Annual	Learn More
	Change Since This County: Fairfax, VA Other counties with monitors in this metropolitan area There are no other counties in this metropolitan area Alexandria City, VA Anne Arrundel, MD Arlington, VA Baltimore, MD Baltimore City, MD Calvert, MD Carroll, MD Charles, MD Washington, DC Fauquier, VA Frederick, MD Frederick, VA Harford, MD Loudoun, VA Montgomery, MD Prince George's, MD Prince William, VA Stafford, VA PASS FAIL DNC INC

Groups At Risk		Learn More
Total Population:		Risks to the population
Pediatric Asthma:		Risks to people with Asthma
Adult Asthma:		Risks to people with Asthma
Chronic Bronchitis:		Risks to people with Chronic Bronchitis
Emphysema:		Risks to people with Emphysema
Cardiovascular Disease:		Risks to people with Cardiovascular Disease
Diabetes:		Risks to people with Diabetes
Children Under 18:		Risks to children and teens
Adults 65 & Over:		Risks to older adults
Poverty Estimate:		Risks to people with low incomes

Notes:

(1) INC indicates incomplete monitoring data for all three years. Therefore, those counties are excluded from the grade analysis.
(2) DNC indicates that there is no monitor collecting data in the county.

More about Methodology.