Herndon, Virginia Weather Forecast

Local

Herndon, VA, US

38.96955, -77.3861

Air Quality

Updated an hour ago

Good

Primary Pollutant: O3

O3	65 µg/m3 (29)
PM2.5	6 µg/m3 (25)
PM10	28 µg/m3 (25)

CO	408 µg/m3 (4)
NO2	23 µg/m3 (11)
SO2	13 µg/m3 (7)

Source: CAMS, Vaisala Xweather

Nearby Stations

Station	AQI	Primary Pollutant	PM2.5 (AQI)	PM10 (AQI)	NO2 (AQI)	OZONE (AQI)	CO (AQI)	SO2 (AQI)
Rose Hill	36	O3	5.8 (24)	14 (13)	n/a	78 (36)	n/a	1.31 (1)
Middleway	25	PM2.5	6.1 (25)	19 (17)	n/a	49 (22)	n/a	n/a
Haymarket	20	O3	n/a	n/a	6.768 (3)	45 (20)	n/a	n/a
Remington	25	O3	n/a	n/a	n/a	55 (25)	n/a	n/a
Ashburn	37	O3	6.7 (28)	17 (15)	4.512 (2)	80 (37)	n/a	n/a
Aquia Harbour	29	O3	n/a	n/a	n/a	65 (29)	n/a	n/a
Arlington	31	O3	n/a	n/a	13 (6)	69 (31)	229 (2)	n/a
Martinsburg	41	O3	n/a	n/a	n/a	90 (41)	n/a	n/a
Washington D.C.	17	PM2.5	4 (17)	n/a	n/a	n/a	n/a	n/a
Washington D.C.	33	O3	5 (21)	n/a	15 (7)	73 (33)	573 (6)	n/a

Source: Virginia Dept. of Environmental Quality, West Virginia Division of Air Quality - Wheeling, District of Columbia - Department of Energy and Environment

Extended Forecast


Hour
AQI
Primary
Wind Dir

Wind Speed ( mph kmh)
Temp (°F°C)

Wednesday, May 8			Thursday, May 9																								Friday, May 10																								Saturday, May 11																								Sunday, May 12
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	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
30	25	32	39	35	21	21	21	29	26	30	30	34	29	27	32	36	36	36	37	34	32	32	30	30	30	29	27	25	27	28	27	26	24	25	25	25	25	26	27	28	27	22	22	25	26	25	25	24	23	22	21	20	45	72	78	77	61	54	69	108	106	30	31	34	37	43	47	41	42	50	53	51	45	41	36	33	29	29	29	32	33	33	33	29	32	36	37	37	38	37	37	37	33	30	29	38
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	O3	O3	O3	O3	O3	O3	O3	O3	O3	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	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	NO2	O3	O3	NO2	NO2	NO2	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	O3	O3	O3	O3	O3	O3	PM2.5	PM2.5

WNW	WNW	WNW	NW	NW	NW	NNW	N	N	E	SSE	ESE	ESE	E	ENE	E	E	ENE	ENE	NE	NE	NE	NE	NE	NE	NE	NE	NNE	NNE	NNE	NNE	NE	NE	NE	NE	ENE	ENE	ENE	ENE	E	E	E	E	ENE	ENE	ENE	ENE	E	E	E	ENE	ENE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	ENE	E	E	SE	SSE	S	S	S	S	SSW	S	S	S	SSE	S	SSE	S	S	SSW	SW	WSW	W	WNW	WNW	NW	NW	NW	NW	NW	NNW	NNW	NNW	NNW	N	N
7 11	6 9	5 9	5 8	4 7	5 7	4 6	3 5	2 4	3 5	4 6	4 7	4 6	5 9	6 9	7 11	8 13	7 12	8 12	9 14	10 15	10 15	8 13	7 12	6 10	5 8	4 6	4 6	4 7	5 8	5 8	4 7	4 6	5 8	4 6	5 7	5 8	5 7	5 9	6 10	6 10	7 11	6 10	6 10	7 11	7 11	7 11	6 10	6 10	6 9	5 8	4 7	5 8	5 9	5 8	5 8	5 7	4 6	4 6	3 5	3 5	2 4	2 3	2 3	2 4	2 3	3 5	3 6	4 6	3 5	2 4	2 3	3 4	5 8	5 8	5 8	5 8	6 10	5 9	4 7	4 6	3 5	3 5	5 8	8 12	10 16	11 18	11 17	11 17	11 18	10 17	10 17	10 15	9 14	8 12	5 8	3 5
77 25.1	75 23.9	73 22.5	70 21.2	68 20.1	67 19.2	65 18.5	64 17.8	63 17.1	63 17.4	64 18	67 19.2	69 20.5	71 21.8	71 21.9	72 22	69 20.6	68 19.7	67 19.7	70 21.2	69 20.6	68 19.7	66 19	64 18	62 16.6	61 15.9	60 15.3	59 15.1	59 14.9	58 14.5	58 14.2	57 13.8	56 13.4	56 13.3	56 13.1	55 12.9	55 12.8	55 12.9	55 12.8	55 12.6	55 12.5	54 12.5	59 15.2	59 15.2	59 15.2	59 14.7	58 14.2	57 13.6	56 13.3	55 12.9	55 12.5	54 12.1	53 11.7	52 11.3	52 11	51 10.8	51 10.6	51 10.8	52 11	52 11.3	55 12.6	57 13.9	59 15.2	60 15.6	61 16	61 16.4	62 16.7	63 17	63 17.3	62 16.6	61 16	60 15.4	58 14.4	56 13.5	55 12.6	54 12.3	54 12.1	53 11.8	53 11.5	52 11.1	51 10.8	53 11.4	54 12	55 12.5	57 13.7	59 14.9	61 16.1	61 16	61 15.9	60 15.8	61 16.2	62 16.7	63 17.3	62 16.8	61 16.3	60 15.8	58 14.6

Source: CAMS, Vaisala Xweather