Ashburn, Virginia Weather Forecast

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Ashburn, VA, US

39.04372, -77.48749

Air Quality

Updated 44 minutes ago

Good

Primary Pollutant: PM2.5

O3	44 µg/m3 (20)
PM2.5	9 µg/m3 (37)
CO	240 µg/m3 (2)

NO2	8 µg/m3 (4)
SO2	4 µg/m3 (1)

Source: AirNow (EPA), Virginia Dept. of Environmental Quality, Maryland Department of the Environment, CAMS

Nearby Stations

Station	AQI	Primary Pollutant	PM2.5 (AQI)	PM10 (AQI)	NO2 (AQI)	OZONE (AQI)	CO (AQI)	SO2 (AQI)
River_terrace	50	PM2.5	12 (50)	n/a	24 (12)	34 (15)	n/a	n/a
Mcmillan Reservoir	21	PM2.5	5 (21)	n/a	n/a	n/a	n/a	n/a
Mcmillan Ncore	25	O3	n/a	n/a	19 (9)	56 (25)	n/a	0 (0)
Takomarec	20	O3	n/a	n/a	26 (13)	44 (20)	n/a	n/a
Dcnearroad	50	PM2.5	12 (50)	n/a	39 (19)	n/a	458 (4)	n/a
Baltimore County Nea	19	NO2	n/a	n/a	38 (19)	n/a	n/a	n/a
Howard County Near R	7	NO2	n/a	n/a	15 (7)	n/a	229 (2)	n/a
Rockville	37	PM2.5	9 (37)	n/a	n/a	30 (14)	n/a	n/a
Hu-Beltsville	21	PM2.5	5 (21)	n/a	11 (6)	40 (18)	229 (2)	0 (0)
Beltsville	22	O3	n/a	n/a	n/a	48 (22)	n/a	n/a

Source: AirNow (EPA), District of Columbia - Department of Energy and Environment, Maryland Department of the Environment, EPA Office of Atmospheric Programs

Extended Forecast


Hour
AQI
Primary
Wind Dir

Wind Speed ( mph kmh)
Temp (°F°C)

Saturday, Apr 17	Sunday, Apr 18																								Monday, Apr 19																								Tuesday, Apr 20																								Wednesday, Apr 21
11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm
42	42	42	42	42	42	42	42	42	42	38	31	37	44	44	44	44	44	44	37	31	34	38	42	42	42	41	41	42	42	42	42	42	41	33	37	44	44	49	49	49	49	49	37	35	42	42	42	42	42	42	42	42	42	42	42	42	42	42	44	49	49	69	69	69	69	69	49	44	37	44	44	49	44	44	44	44	44	44	44	37	37	37	44	44	49	49	49	49	44	37	37	37	37	37	44	44
PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	O3	O3	O3	O3	O3	O3	O3	O3	O3	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3

NW	W	WNW	WNW	WNW	NW	NW	WNW	WNW	WNW	NW	NW	NW	WNW	WNW	WNW	WNW	WNW	WNW	W	WSW	SW	SW	SW	SW	WSW	SW	WSW	SW	WSW	WSW	WSW	W	WNW	NW	NW	NW	NW	NW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	SW	SW	SW	SW	SW	SW	SSW	SSW	SSW	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	W	W	W	W	W	W	WNW	WNW	WNW	WNW
3 5	3 5	3 5	3 5	2 4	2 4	2 4	2 4	2 4	2 4	5 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	4 7	2 4	4 7	3 6	3 5	3 5	2 4	2 4	2 4	2 4	2 4	2 4	2 4	2 4	3 5	6 9	7 11	7 12	7 12	8 12	7 12	7 12	7 11	5 9	4 6	2 4	3 4	3 5	3 5	3 5	3 4	2 4	2 4	2 4	2 4	2 4	2 4	2 4	3 6	5 7	6 9	7 11	7 12	8 13	8 14	9 14	9 15	8 13	7 11	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	6 9	7 11	8 13	10 15	11 17	12 19	13 21	13 21	13 22	14 22	14 22	14 22	14 23	13 21	12 20	12 19
51 10	49 9	48 9	46 8	45 7	44 7	43 6	43 6	44 7	47 8	51 10	54 12	57 14	58 15	60 16	62 17	63 17	63 17	63 17	62 17	61 16	59 15	56 13	54 12	52 11	51 10	51 11	50 10	49 9	48 9	46 8	45 7	46 8	49 9	53 12	57 14	60 16	62 16	63 17	65 18	66 19	66 19	67 19	65 18	63 17	61 16	58 15	56 13	53 12	52 11	51 10	50 10	49 9	48 9	47 8	48 9	50 10	51 11	56 13	60 16	65 18	67 20	69 21	71 22	71 22	71 22	72 22	69 21	66 19	64 18	62 17	61 16	59 15	58 14	57 14	55 13	55 13	55 13	55 13	55 13	54 12	54 12	56 13	57 14	58 15	60 15	61 16	62 17	60 16	58 14	56 13	54 12	52 11	50 10	48 9	46 8	45 7

Source: CAMS