Point Forecast: 2 Miles S Washington-Dulles International Airport VA  38.93N 77.45W (Elev. 91 m)	Last Update: 4:29 pm EDT Jul 3, 2025

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

48-Hour Period Starting: 6pm Thu, Jul 3 20257pm Thu, Jul 3 20258pm Thu, Jul 3 20259pm Thu, Jul 3 202510pm Thu, Jul 3 202511pm Thu, Jul 3 202512am Fri, Jul 4 20251am Fri, Jul 4 20252am Fri, Jul 4 20253am Fri, Jul 4 20254am Fri, Jul 4 20255am Fri, Jul 4 20256am Fri, Jul 4 20257am Fri, Jul 4 20258am Fri, Jul 4 20259am Fri, Jul 4 202510am Fri, Jul 4 202511am Fri, Jul 4 202512pm Fri, Jul 4 20251pm Fri, Jul 4 20252pm Fri, Jul 4 20253pm Fri, Jul 4 20254pm Fri, Jul 4 20255pm Fri, Jul 4 20256pm Fri, Jul 4 20257pm Fri, Jul 4 20258pm Fri, Jul 4 20259pm Fri, Jul 4 202510pm Fri, Jul 4 202511pm Fri, Jul 4 202512am Sat, Jul 5 20251am Sat, Jul 5 20252am Sat, Jul 5 20253am Sat, Jul 5 20254am Sat, Jul 5 20255am Sat, Jul 5 20256am Sat, Jul 5 20257am Sat, Jul 5 20258am Sat, Jul 5 20259am Sat, Jul 5 202510am Sat, Jul 5 202511am Sat, Jul 5 202512pm Sat, Jul 5 20251pm Sat, Jul 5 20252pm Sat, Jul 5 20253pm Sat, Jul 5 20254pm Sat, Jul 5 20255pm Sat, Jul 5 20256pm Sat, Jul 5 20257pm Sat, Jul 5 20258pm Sat, Jul 5 20259pm Sat, Jul 5 202510pm Sat, Jul 5 202511pm Sat, Jul 5 202512am Sun, Jul 6 20251am Sun, Jul 6 20252am Sun, Jul 6 20253am Sun, Jul 6 20254am Sun, Jul 6 20255am Sun, Jul 6 20256am Sun, Jul 6 20257am Sun, Jul 6 20258am Sun, Jul 6 20259am Sun, Jul 6 202510am Sun, Jul 6 202511am Sun, Jul 6 202512pm Sun, Jul 6 20251pm Sun, Jul 6 20252pm Sun, Jul 6 20253pm Sun, Jul 6 20254pm Sun, Jul 6 20255pm Sun, Jul 6 20256pm Sun, Jul 6 20257pm Sun, Jul 6 20258pm Sun, Jul 6 20259pm Sun, Jul 6 202510pm Sun, Jul 6 202511pm Sun, Jul 6 202512am Mon, Jul 7 20251am Mon, Jul 7 20252am Mon, Jul 7 20253am Mon, Jul 7 20254am Mon, Jul 7 20255am Mon, Jul 7 20256am Mon, Jul 7 20257am Mon, Jul 7 20258am Mon, Jul 7 20259am Mon, Jul 7 202510am Mon, Jul 7 202511am Mon, Jul 7 202512pm Mon, Jul 7 20251pm Mon, Jul 7 20252pm Mon, Jul 7 20253pm Mon, Jul 7 20254pm Mon, Jul 7 20255pm Mon, Jul 7 20256pm Mon, Jul 7 20257pm Mon, Jul 7 20258pm Mon, Jul 7 20259pm Mon, Jul 7 202510pm Mon, Jul 7 202511pm Mon, Jul 7 202512am Tue, Jul 8 20251am Tue, Jul 8 20252am Tue, Jul 8 20253am Tue, Jul 8 20254am Tue, Jul 8 20255am Tue, Jul 8 2025

Date	07/03						07/04
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 (°C)	31	30	28	26	24	24	23	22	22	21	20	19	19	19	22	24	26	27	28	29	29	29	30	29
Dewpoint (°C)	20	20	21	20	20	19	19	19	18	18	18	17	17	17	18	18	18	18	17	17	17	17	17	17
Heat Index (°C)	33	32	31	26	24	24										24	26	28	29	29	30	30	30	30
Surface Wind (mph)	6	5	6	5	5	5	5	5	6	5	5	5	5	3	3	3	5	6	6	6	6	6	5	5
Wind Dir	NW	NW	W	W	NW	NW	NW	N	NW	NW	NW	NW	NW	NW	NW	N	N	N	N	N	N	N	N	N
Gust
Sky Cover (%)	26	22	12	4	2	2	7	9	8	2	5	9	16	6	3	1	1	4	5	6	7	8	11	11
Precipitation Potential (%)	6	8	3	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	53	55	63	69	76	76	79	81	81	84	87	87	87	87	79	71	62	56	49	48	46	46	45	46
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date							07/05
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 (°C)	29	29	27	25	24	23	22	21	20	19	18	18	19	20	22	24	26	28	29	30	31	31	31	30
Dewpoint (°C)	17	18	18	17	17	18	18	17	17	17	17	17	17	18	18	19	19	19	19	19	19	19	19	19
Heat Index (°C)	29	29	28	25	24											24	26	29	31	31	32	32	32	31
Surface Wind (mph)	3	3	2	2	2	2	2	1	1	1	1	1	1	1	1	1	2	2	3	3	5	5	6	6
Wind Dir	N	NE	NE	E	E	E	SE	S	S	S	E	E	E	SE	SE	SE	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	10	5	5	13	10	7	6	5	4	7	10	13	12	12	11	9	8	6	9	12	15	28	40	53
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1
Relative Humidity (%)	48	51	58	62	66	73	79	81	84	87	90	90	90	87	81	74	64	57	53	51	50	50	50	51
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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