Point Forecast: 2 Miles S Washington-Dulles International Airport VA  38.93N 77.45W (Elev. 91 m)	Last Update: 10:30 pm EDT Jun 30, 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: 12am Tue, Jul 1 20251am Tue, Jul 1 20252am Tue, Jul 1 20253am Tue, Jul 1 20254am Tue, Jul 1 20255am Tue, Jul 1 20256am Tue, Jul 1 20257am Tue, Jul 1 20258am Tue, Jul 1 20259am Tue, Jul 1 202510am Tue, Jul 1 202511am Tue, Jul 1 202512pm Tue, Jul 1 20251pm Tue, Jul 1 20252pm Tue, Jul 1 20253pm Tue, Jul 1 20254pm Tue, Jul 1 20255pm Tue, Jul 1 20256pm Tue, Jul 1 20257pm Tue, Jul 1 20258pm Tue, Jul 1 20259pm Tue, Jul 1 202510pm Tue, Jul 1 202511pm Tue, Jul 1 202512am Wed, Jul 2 20251am Wed, Jul 2 20252am Wed, Jul 2 20253am Wed, Jul 2 20254am Wed, Jul 2 20255am Wed, Jul 2 20256am Wed, Jul 2 20257am Wed, Jul 2 20258am Wed, Jul 2 20259am Wed, Jul 2 202510am Wed, Jul 2 202511am Wed, Jul 2 202512pm Wed, Jul 2 20251pm Wed, Jul 2 20252pm Wed, Jul 2 20253pm Wed, Jul 2 20254pm Wed, Jul 2 20255pm Wed, Jul 2 20256pm Wed, Jul 2 20257pm Wed, Jul 2 20258pm Wed, Jul 2 20259pm Wed, Jul 2 202510pm Wed, Jul 2 202511pm Wed, Jul 2 202512am Thu, Jul 3 20251am Thu, Jul 3 20252am Thu, Jul 3 20253am Thu, Jul 3 20254am Thu, Jul 3 20255am Thu, Jul 3 20256am Thu, Jul 3 20257am Thu, Jul 3 20258am Thu, Jul 3 20259am Thu, Jul 3 202510am Thu, Jul 3 202511am Thu, Jul 3 202512pm Thu, Jul 3 20251pm Thu, Jul 3 20252pm Thu, Jul 3 20253pm Thu, Jul 3 20254pm Thu, Jul 3 20255pm Thu, Jul 3 20256pm 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 2025

Date	07/01
Hour (EDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°C)	26	25	24	24	24	24	24	24	26	27	29	30	31	31	31	29	28	27	27	27	26	24	24	23
Dewpoint (°C)	23	23	23	23	23	23	23	23	24	24	24	24	24	24	24	24	24	24	24	24	24	23	23	23
Heat Index (°C)	26	25	24	24	24	24	24	24	26	31	34	36	37	37	37	34	32	30	29	29	26	24	24
Surface Wind (mph)	6	6	6	6	6	6	6	6	6	6	6	6	7	7	8	8	7	7	6	6	6	5	3	2
Wind Dir	SW	S	S	S	S	S	S	S	SW	SW	SW	SW	SW	SW	SW	NW	NW	W	W	S	SW	SW	SW	SW
Gust
Sky Cover (%)	65	38	44	46	52	53	56	27	30	32	14	43	52	60	77	87	91	95	86	87	80	84	84	83
Precipitation Potential (%)	19	14	11	8	9	8	7	7	9	9	7	22	28	40	65	80	83	67	62	61	55	55	55	55
Relative Humidity (%)	88	90	94	94	97	94	94	97	91	85	77	72	68	68	68	75	82	88	85	85	91	94	94	97
Rain	SChc	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Lkly	Ocnl	Ocnl	Lkly	Lkly	Lkly	Lkly	Lkly	Lkly	Lkly
Thunder	SChc	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Lkly	Lkly	Lkly	Lkly	Lkly	Lkly	Chc	Chc	Chc	Chc
Date	07/02
Hour (EDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°C)	23	23	22	22	22	22	22	22	22	23	24	26	27	28	29	29	29	28	28	27	27	26	24	23
Dewpoint (°C)	23	22	22	22	22	22	22	22	22	22	23	23	23	22	22	22	22	22	22	23	23	23	22	22
Heat Index (°C)											24	26	30	31	32	32	32	31	31	30	29	26	24
Surface Wind (mph)	2	2	2	2	3	3	3	5	5	5	6	6	6	6	6	6	5	5	3	3	2	2	2	2
Wind Dir	SW	SW	SW	SW	W	W	W	W	NW	NW	NW	NW	NW	NW	NW	NW	W	SW	SW	SW	S	SW	SW	SW
Gust
Sky Cover (%)	82	82	81	80	79	78	69	61	52	50	48	46	42	39	35	35	36	36	35	35	23	24	25	26
Precipitation Potential (%)	55	55	23	23	23	23	23	23	15	15	15	15	15	15	19	19	19	19	19	19	6	6	6	6
Relative Humidity (%)	100	97	100	100	100	100	100	100	100	93	90	82	77	70	67	67	67	70	72	77	79	85	87	90
Rain	Lkly	Lkly	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--
Thunder	Chc	Chc	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--

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