Point Forecast: Chantilly VA  38.88N 77.4W (Elev. 358 ft)	Last Update: 1:30 pm EDT Jul 1, 2024

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Weather Elements Fire Weather Aviation Weather Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Mixing Height  x100ftx100m Haines Index Lightning Activity Level 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: 4pm Mon, Jul 1 20245pm Mon, Jul 1 20246pm Mon, Jul 1 20247pm Mon, Jul 1 20248pm Mon, Jul 1 20249pm Mon, Jul 1 202410pm Mon, Jul 1 202411pm Mon, Jul 1 202412am Tue, Jul 2 20241am Tue, Jul 2 20242am Tue, Jul 2 20243am Tue, Jul 2 20244am Tue, Jul 2 20245am Tue, Jul 2 20246am Tue, Jul 2 20247am Tue, Jul 2 20248am Tue, Jul 2 20249am Tue, Jul 2 202410am Tue, Jul 2 202411am Tue, Jul 2 202412pm Tue, Jul 2 20241pm Tue, Jul 2 20242pm Tue, Jul 2 20243pm Tue, Jul 2 20244pm Tue, Jul 2 20245pm Tue, Jul 2 20246pm Tue, Jul 2 20247pm Tue, Jul 2 20248pm Tue, Jul 2 20249pm Tue, Jul 2 202410pm Tue, Jul 2 202411pm Tue, Jul 2 202412am Wed, Jul 3 20241am Wed, Jul 3 20242am Wed, Jul 3 20243am Wed, Jul 3 20244am Wed, Jul 3 20245am Wed, Jul 3 20246am Wed, Jul 3 20247am Wed, Jul 3 20248am Wed, Jul 3 20249am Wed, Jul 3 202410am Wed, Jul 3 202411am Wed, Jul 3 202412pm Wed, Jul 3 20241pm Wed, Jul 3 20242pm Wed, Jul 3 20243pm Wed, Jul 3 20244pm Wed, Jul 3 20245pm Wed, Jul 3 20246pm Wed, Jul 3 20247pm Wed, Jul 3 20248pm Wed, Jul 3 20249pm Wed, Jul 3 202410pm Wed, Jul 3 202411pm Wed, Jul 3 202412am Thu, Jul 4 20241am Thu, Jul 4 20242am Thu, Jul 4 20243am Thu, Jul 4 20244am Thu, Jul 4 20245am Thu, Jul 4 20246am Thu, Jul 4 20247am Thu, Jul 4 20248am Thu, Jul 4 20249am Thu, Jul 4 202410am Thu, Jul 4 202411am Thu, Jul 4 202412pm Thu, Jul 4 20241pm Thu, Jul 4 20242pm Thu, Jul 4 20243pm Thu, Jul 4 20244pm Thu, Jul 4 20245pm Thu, Jul 4 20246pm Thu, Jul 4 20247pm Thu, Jul 4 20248pm Thu, Jul 4 20249pm Thu, Jul 4 202410pm Thu, Jul 4 202411pm Thu, Jul 4 202412am Fri, Jul 5 20241am Fri, Jul 5 20242am Fri, Jul 5 20243am Fri, Jul 5 20244am Fri, Jul 5 20245am Fri, Jul 5 20246am Fri, Jul 5 20247am Fri, Jul 5 20248am Fri, Jul 5 20249am Fri, Jul 5 202410am Fri, Jul 5 202411am Fri, Jul 5 202412pm Fri, Jul 5 20241pm Fri, Jul 5 20242pm Fri, Jul 5 20243pm Fri, Jul 5 20244pm Fri, Jul 5 20245pm Fri, Jul 5 20246pm Fri, Jul 5 20247pm Fri, Jul 5 20248pm Fri, Jul 5 20249pm Fri, Jul 5 202410pm Fri, Jul 5 202411pm Fri, Jul 5 202412am Sat, Jul 6 20241am Sat, Jul 6 20242am Sat, Jul 6 20243am Sat, Jul 6 2024

Date	07/01								07/02
Hour (EDT)	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
Temperature (°F)	79	79	80	78	76	73	70	68	65	64	63	62	61	60	59	61	65	68	74	78	81	82	83	83
Dewpoint (°F)	51	51	51	51	52	52	52	53	53	53	53	53	53	53	54	54	56	56	56	56	55	55	55	55
Heat Index (°F)	79	79	80	78	76															78	81	81	82	82
Surface Wind (mph)	13	11	10	9	7	6	6	5	5	5	5	5	5	3	3	3	3	3	3	5	5	6	6	7
Wind Dir	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	NE	E	E	SE	SE	SE	SE
Gust	20
Sky Cover (%)	30	26	20	14	4	4	0	3	3	7	5	4	6	12	3	14	24	26	28	30	32	39	43	42
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	38	38	36	39	43	48	53	59	65	67	70	72	75	78	83	78	73	65	53	47	41	40	38	38
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date									07/03
Hour (EDT)	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
Temperature (°F)	84	85	83	83	80	77	74	72	71	69	66	64	63	63	64	65	68	72	76	80	83	85	86	87
Dewpoint (°F)	55	55	56	56	56	57	58	59	59	59	59	59	59	59	60	61	62	62	61	60	59	59	59	59
Heat Index (°F)	83	84	82	82	80	77													76	81	83	85	85	86
Surface Wind (mph)	7	8	8	8	8	8	7	7	6	6	6	5	3	3	3	3	5	6	7	7	8	8	9	9
Wind Dir	SE	SE	SE	SE	SE	SE	SE	SE	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	39	37	35	28	27	29	31	34	36	40	42	38	31	27	25	22	20	18	15	13	16	21	23	24
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	37	36	40	40	44	50	57	64	66	70	78	84	87	87	87	87	81	71	60	51	44	41	40	39
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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