Herndon, Virginia Weather Forecast

Local

Herndon, VA, US

38.96955, -77.3861

Air Quality

Updated an hour ago

Good

Primary Pollutant: O3

O3	83 µg/m3 (38)
PM2.5	6 µg/m3 (25)
PM10	16 µg/m3 (15)

CO	213 µg/m3 (2)
NO2	5 µg/m3 (3)
SO2	2 µg/m3 (1)

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	28	PM2.5	6.8 (28)	12 (11)	n/a	52 (24)	n/a	1.048 (1)
Middleway	38	PM2.5	9.2 (38)	16 (15)	n/a	52 (24)	n/a	n/a
Haymarket	26	O3	n/a	n/a	n/a	58 (26)	n/a	n/a
Remington	25	O3	n/a	n/a	n/a	56 (25)	n/a	n/a
Aquia Harbour	26	O3	n/a	n/a	n/a	58 (26)	n/a	n/a
Ashburn	42	PM2.5	10 (42)	15 (14)	n/a	56 (25)	n/a	n/a
Arlington	24	O3	n/a	n/a	n/a	52 (24)	229 (2)	n/a
Martinsburg	25	O3	n/a	n/a	n/a	54 (25)	n/a	n/a
Washington D.C.	29	PM2.5	7 (29)	n/a	n/a	n/a	n/a	n/a
Washington D.C.	25	O3	4 (17)	n/a	n/a	56 (25)	n/a	n/a

Source: AirNow (EPA), 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)

Friday, Apr 19						Saturday, Apr 20																								Sunday, Apr 21																								Monday, Apr 22																								Tuesday, Apr 23
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	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm
39	38	37	40	44	24	23	23	22	20	21	25	29	29	33	33	34	28	35	41	42	44	45	43	41	39	35	33	33	31	30	28	27	26	24	23	20	18	21	25	29	30	30	30	31	32	32	32	32	30	25	28	25	22	23	25	38	51	58	75	89	100	83	68	61	59	73	82	55	48	48	49	46	44	52	60	65	67	67	64	63	61	60	58	55	53	51	48	44	43	46	49	56	56	57	57	50
O3	O3	PM2.5	PM2.5	PM2.5	O3	O3	O3	O3	O3	PM2.5	PM2.5	PM2.5	PM2.5	O3	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	PM2.5	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	PM2.5	PM2.5	O3	O3	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM10	PM10	PM2.5	PM2.5	PM2.5	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

SSE	SE	SSE	SSE	SSE	SSE	S	SW	SW	WNW	NW	NNW	NNW	NNW	NNW	NNW	NNW	NW	NW	WNW	WNW	WNW	WNW	WNW	WNW	NW	NW	NW	NW	NNW	NNW	NNW	NNW	NNW	NNW	NW	NW	NW	NW	NW	WNW	WNW	WNW	WNW	WNW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NNW	NNW	NNW	NNW	NNW	NNW	NNW	NNW	NNW	NNW	N	NE	SE	SSE	S	S	S	S	S	SSW	S	SSW	S	S	S	S	S	S	S	SSW	SSW	SSW	SSW	S
7 12	6 10	7 11	7 11	7 11	6 9	5 7	3 5	2 4	3 5	5 9	9 14	10 15	9 14	7 11	7 11	8 12	9 14	10 16	10 16	12 19	13 21	13 21	13 20	12 19	10 16	9 14	9 14	8 13	8 14	9 14	8 13	7 11	6 9	5 8	5 7	5 7	5 7	4 6	5 7	6 10	8 13	10 16	10 17	10 16	10 16	10 17	10 16	9 15	8 12	6 10	6 9	6 10	6 9	6 9	6 10	6 10	5 9	5 8	5 8	5 8	5 8	6 9	7 11	7 11	7 11	7 12	8 12	7 12	7 11	6 10	6 9	5 8	3 5	2 4	3 5	3 5	4 6	4 6	4 6	4 6	5 7	5 7	4 7	4 7	5 8	7 10	8 13	9 15	11 18	12 20	12 20	12 19	12 20	12 19	11 17	10 16
65 18.4	64 17.9	63 17.1	61 16.2	60 15.5	58 14.6	57 14.1	57 13.7	56 13.2	55 12.9	56 13.1	56 13.3	56 13.1	55 13	56 13.6	57 13.7	57 13.8	58 14.6	61 16	65 18.4	67 19.7	69 20.3	69 20.5	69 20.4	67 19.4	65 18.1	62 16.5	59 14.8	56 13.1	53 11.7	51 10.6	49 9.4	47 8.3	45 7.4	44 6.6	43 5.9	42 5.6	42 5.5	44 6.7	48 9	51 10.4	53 11.8	54 12.4	55 12.9	56 13.4	57 13.7	57 14	58 14.3	57 13.7	55 13	54 12.4	53 11.6	51 10.8	50 10	49 9.2	47 8.5	46 7.8	45 7.2	44 6.6	43 6	44 6.9	46 7.8	48 8.6	50 10.2	53 11.8	56 13.4	57 14.1	59 14.8	60 15.5	61 16.1	62 16.7	63 17.4	61 16.2	59 15.1	57 14	55 13	54 12	52 11	50 10.2	49 9.3	47 8.5	46 7.8	45 7.1	43 6.3	45 7.1	46 7.8	47 8.5	52 11.1	57 13.7	61 16.3	63 17.4	65 18.5	67 19.5	68 20	69 20.4	70 20.9	68 20.2

Source: CAMS, Vaisala Xweather