Ashburn, Virginia Weather Forecast

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Ashburn, VA, US

39.04372, -77.48749

Air Quality

Updated 12 minutes ago

Good

Primary Pollutant: O3

O3	64 µg/m3 (29)
PM2.5	7 µg/m3 (29)
CO	137 µg/m3 (1)

NO2	18 µg/m3 (9)
SO2	2 µg/m3 (0)

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	31	O3	6 (25)	n/a	15 (7)	68 (31)	n/a	n/a
Mcmillan Reservoir	4	PM2.5	1 (4)	n/a	n/a	n/a	n/a	n/a
Mcmillan Ncore	35	O3	n/a	n/a	15 (7)	78 (35)	n/a	n/a
Takomarec	34	O3	n/a	n/a	13 (6)	74 (34)	n/a	n/a
Dcnearroad	12	PM2.5	3 (12)	n/a	15 (7)	n/a	195 (2)	n/a
Baltimore County Nea	26	NO2	n/a	n/a	53 (26)	n/a	n/a	n/a
Howard County Near R	12	PM2.5	3 (12)	n/a	21 (10)	n/a	183 (2)	n/a
Rockville	36	O3	7 (29)	n/a	n/a	80 (36)	n/a	n/a
Hu-Beltsville	35	O3	5 (21)	n/a	5.64 (3)	78 (35)	149 (1)	0 (0)
Beltsville	35	O3	n/a	n/a	n/a	76 (35)	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)

Thursday, May 13		Friday, May 14																								Saturday, May 15																								Sunday, May 16																								Monday, May 17
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	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm
33	34	35	33	33	35	37	39	40	41	37	35	36	33	31	35	35	35	35	35	35	35	45	51	51	51	77	77	77	77	77	51	51	51	51	51	49	43	41	41	40	40	40	40	41	47	51	51	77	77	77	77	77	77	77	77	77	77	77	77	51	51	51	51	77	77	77	77	77	77	77	77	77	77	77	77	77	51	51	51	51	51	51	51	51	51	49	46	46	45	49	49	50	51	51	77	77
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	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	PM2.5	PM2.5	PM2.5	PM2.5	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	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	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	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5

NW	NW	NW	NW	NW	NW	NW	NW	NW	NNW	NNW	NNW	N	N	N	N	N	N	N	N	NNW	NNW	NW	WNW	W	WSW	W	W	W	WNW	WNW	NW	NW	NW	NW	NW	NW	WNW	WNW	WNW	S	S	S	SW	SW	SW	WSW	WSW	WSW	S	S	S	SSW	SSW	SSW	SW	SW	SW	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SSE	SSE	SSE	SSE	SSE	SSE	S	S	S	S	S	S	S	S	S
2 4	2 4	2 4	2 4	2 4	2 4	2 4	2 3	2 3	2 3	2 4	2 4	3 5	3 5	3 5	3 5	3 5	5 8	5 8	3 5	3 5	3 5	2 3	1 2	1 1	1 2	1 2	0 0	0 0	0 0	0 0	0 0	1 2	1 2	3 5	2 4	2 4	2 4	2 4	2 4	2 4	3 4	3 5	3 5	3 5	3 4	2 4	2 3	1 2	1 2	1 2	1 2	1 2	1 2	1 2	1 2	2 2	2 3	2 4	3 4	3 5	3 5	5 8	6 10	8 13	8 12	7 12	7 11	6 9	5 7	3 5	3 5	3 5	3 5	3 5	3 5	3 5	4 6	4 6	4 7	4 7	5 7	5 8	5 9	6 9	6 10	7 11	8 12	8 13	8 12	7 11	6 10	6 9	5 9	5 8	5 7	4 7
54 12	51 10	50 10	48 9	47 8	46 8	44 7	43 6	45 7	47 8	50 10	55 13	60 15	65 18	67 19	68 20	69 20	69 20	69 20	69 21	68 20	66 19	64 18	61 16	58 14	55 13	53 12	51 11	50 10	49 10	48 9	47 8	48 9	51 10	53 12	58 14	62 17	67 19	68 20	70 21	71 22	71 22	71 22	71 22	69 21	68 20	66 19	63 17	61 16	58 14	57 14	55 13	54 12	53 12	52 11	51 11	52 11	54 12	55 13	58 15	62 16	65 18	66 19	67 19	68 20	68 20	68 20	68 20	67 20	66 19	66 19	64 18	63 17	61 16	60 15	58 15	57 14	57 14	57 14	56 14	56 14	56 13	56 13	58 14	60 15	62 16	63 17	65 18	67 19	67 19	66 19	66 19	66 19	65 18	65 18	64 18	63 17

Source: CAMS