Point Forecast: 3 Miles SSW Ashburn VA  39N 77.49W (Elev. 299 ft)	Last Update: 5:46 pm EDT Apr 28, 2025

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Weather Elements Fire Weather Aviation Weather Temperature (°F) Dewpoint (°F) Wind Chill (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Snow Freezing Rain Sleet Fog Mixing Height  x100ftx100m Trans. Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) Atmospheric Dispersion Index Low Visibility Occurrence Risk Index Ceiling Height Visibility

48-Hour Period Starting: 6pm Mon, Apr 28 20257pm Mon, Apr 28 20258pm Mon, Apr 28 20259pm Mon, Apr 28 202510pm Mon, Apr 28 202511pm Mon, Apr 28 202512am Tue, Apr 29 20251am Tue, Apr 29 20252am Tue, Apr 29 20253am Tue, Apr 29 20254am Tue, Apr 29 20255am Tue, Apr 29 20256am Tue, Apr 29 20257am Tue, Apr 29 20258am Tue, Apr 29 20259am Tue, Apr 29 202510am Tue, Apr 29 202511am Tue, Apr 29 202512pm Tue, Apr 29 20251pm Tue, Apr 29 20252pm Tue, Apr 29 20253pm Tue, Apr 29 20254pm Tue, Apr 29 20255pm Tue, Apr 29 20256pm Tue, Apr 29 20257pm Tue, Apr 29 20258pm Tue, Apr 29 20259pm Tue, Apr 29 202510pm Tue, Apr 29 202511pm Tue, Apr 29 202512am Wed, Apr 30 20251am Wed, Apr 30 20252am Wed, Apr 30 20253am Wed, Apr 30 20254am Wed, Apr 30 20255am Wed, Apr 30 20256am Wed, Apr 30 20257am Wed, Apr 30 20258am Wed, Apr 30 20259am Wed, Apr 30 202510am Wed, Apr 30 202511am Wed, Apr 30 202512pm Wed, Apr 30 20251pm Wed, Apr 30 20252pm Wed, Apr 30 20253pm Wed, Apr 30 20254pm Wed, Apr 30 20255pm Wed, Apr 30 20256pm Wed, Apr 30 20257pm Wed, Apr 30 20258pm Wed, Apr 30 20259pm Wed, Apr 30 202510pm Wed, Apr 30 202511pm Wed, Apr 30 202512am Thu, May 1 20251am Thu, May 1 20252am Thu, May 1 20253am Thu, May 1 20254am Thu, May 1 20255am Thu, May 1 20256am Thu, May 1 20257am Thu, May 1 20258am Thu, May 1 20259am Thu, May 1 202510am Thu, May 1 202511am Thu, May 1 202512pm Thu, May 1 20251pm Thu, May 1 20252pm Thu, May 1 20253pm Thu, May 1 20254pm Thu, May 1 20255pm Thu, May 1 20256pm Thu, May 1 20257pm Thu, May 1 20258pm Thu, May 1 20259pm Thu, May 1 202510pm Thu, May 1 202511pm Thu, May 1 202512am Fri, May 2 20251am Fri, May 2 20252am Fri, May 2 20253am Fri, May 2 20254am Fri, May 2 20255am Fri, May 2 20256am Fri, May 2 20257am Fri, May 2 20258am Fri, May 2 20259am Fri, May 2 202510am Fri, May 2 202511am Fri, May 2 202512pm Fri, May 2 20251pm Fri, May 2 20252pm Fri, May 2 20253pm Fri, May 2 20254pm Fri, May 2 20255pm Fri, May 2 20256pm Fri, May 2 20257pm Fri, May 2 20258pm Fri, May 2 20259pm Fri, May 2 202510pm Fri, May 2 202511pm Fri, May 2 202512am Sat, May 3 20251am Sat, May 3 20252am Sat, May 3 20253am Sat, May 3 20254am Sat, May 3 20255am Sat, May 3 2025

Date	04/28						04/29
Hour (EDT)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	73	71	66	64	62	60	58	57	56	55	54	54	54	53	57	61	68	72	75	80	82	83	84	85
Dewpoint (°F)	37	35	41	41	41	41	42	42	42	41	41	42	43	44	46	48	49	51	52	53	54	55	56	57
Wind Chill (°F)
Surface Wind (mph)	6	6	6	6	6	7	7	7	7	7	8	8	8	9	9	10	10	11	13	14	15	15	16	16
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust																18	20	22	22	23	24	25	26	26
Sky Cover (%)	3	3	4	4	5	5	10	15	20	19	19	18	17	17	16	15	15	14	19	25	30	32	34	35
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	3	3	3	6
Relative Humidity (%)	27	27	40	43	46	49	55	57	59	59	61	64	66	71	67	62	51	48	45	39	38	38	38	39
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date							04/30
Hour (EDT)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	84	82	80	77	75	73	71	70	69	68	67	66	66	67	68	70	72	75	77	79	81	82	83	83
Dewpoint (°F)	56	57	57	58	59	59	59	60	60	60	61	61	61	61	61	61	61	60	59	58	57	57	56	56
Wind Chill (°F)
Surface Wind (mph)	15	14	13	11	11	10	9	8	7	6	6	6	6	6	7	8	9	9	9	9	9	8	8	7
Wind Dir	S	S	S	S	SW	SW	SW	SW	SW	SW	W	W	W	W	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust	26	25	24	23	22	20
Sky Cover (%)	39	42	45	48	51	54	57	60	63	66	70	74	71	67	64	60	56	52	48	45	41	42	44	45
Precipitation Potential (%)	6	6	26	26	26	26	26	26	16	16	16	16	16	16	12	12	12	12	12	12	31	31	31	31
Relative Humidity (%)	38	43	45	52	58	62	66	71	73	76	81	84	84	81	78	73	68	60	54	49	44	43	40	40
Rain	--	--	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	Chc	Chc	Chc	Chc
Thunder	--	--	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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