Point Forecast: Altoona PA  40.51N 78.4W (Elev. 365 m)	Last Update: 3:16 pm EDT Aug 15, 2026

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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 20ft Wind  ktmphkm/hm/s Vent Rate (x1000 mph-m) Davis Stability Index Atmospheric Dispersion Index Low Visibility Occurrence Risk Index Ceiling Height Visibility Thunder Potential

48-Hour Period Starting: 5pm Sat, Aug 15 20266pm Sat, Aug 15 20267pm Sat, Aug 15 20268pm Sat, Aug 15 20269pm Sat, Aug 15 202610pm Sat, Aug 15 202611pm Sat, Aug 15 202612am Sun, Aug 16 20261am Sun, Aug 16 20262am Sun, Aug 16 20263am Sun, Aug 16 20264am Sun, Aug 16 20265am Sun, Aug 16 20266am Sun, Aug 16 20267am Sun, Aug 16 20268am Sun, Aug 16 20269am Sun, Aug 16 202610am Sun, Aug 16 202611am Sun, Aug 16 202612pm Sun, Aug 16 20261pm Sun, Aug 16 20262pm Sun, Aug 16 20263pm Sun, Aug 16 20264pm Sun, Aug 16 20265pm Sun, Aug 16 20266pm Sun, Aug 16 20267pm Sun, Aug 16 20268pm Sun, Aug 16 20269pm Sun, Aug 16 202610pm Sun, Aug 16 202611pm Sun, Aug 16 202612am Mon, Aug 17 20261am Mon, Aug 17 20262am Mon, Aug 17 20263am Mon, Aug 17 20264am Mon, Aug 17 20265am Mon, Aug 17 20266am Mon, Aug 17 20267am Mon, Aug 17 20268am Mon, Aug 17 20269am Mon, Aug 17 202610am Mon, Aug 17 202611am Mon, Aug 17 202612pm Mon, Aug 17 20261pm Mon, Aug 17 20262pm Mon, Aug 17 20263pm Mon, Aug 17 20264pm Mon, Aug 17 20265pm Mon, Aug 17 20266pm Mon, Aug 17 20267pm Mon, Aug 17 20268pm Mon, Aug 17 20269pm Mon, Aug 17 202610pm Mon, Aug 17 202611pm Mon, Aug 17 202612am Tue, Aug 18 20261am Tue, Aug 18 20262am Tue, Aug 18 20263am Tue, Aug 18 20264am Tue, Aug 18 20265am Tue, Aug 18 20266am Tue, Aug 18 20267am Tue, Aug 18 20268am Tue, Aug 18 20269am Tue, Aug 18 202610am Tue, Aug 18 202611am Tue, Aug 18 202612pm Tue, Aug 18 20261pm Tue, Aug 18 20262pm Tue, Aug 18 20263pm Tue, Aug 18 20264pm Tue, Aug 18 20265pm Tue, Aug 18 20266pm Tue, Aug 18 20267pm Tue, Aug 18 20268pm Tue, Aug 18 20269pm Tue, Aug 18 202610pm Tue, Aug 18 202611pm Tue, Aug 18 202612am Wed, Aug 19 20261am Wed, Aug 19 20262am Wed, Aug 19 20263am Wed, Aug 19 20264am Wed, Aug 19 20265am Wed, Aug 19 20266am Wed, Aug 19 20267am Wed, Aug 19 20268am Wed, Aug 19 20269am Wed, Aug 19 202610am Wed, Aug 19 202611am Wed, Aug 19 202612pm Wed, Aug 19 20261pm Wed, Aug 19 20262pm Wed, Aug 19 20263pm Wed, Aug 19 20264pm Wed, Aug 19 20265pm Wed, Aug 19 20266pm Wed, Aug 19 20267pm Wed, Aug 19 20268pm Wed, Aug 19 20269pm Wed, Aug 19 202610pm Wed, Aug 19 202611pm Wed, Aug 19 202612am Thu, Aug 20 20261am Thu, Aug 20 20262am Thu, Aug 20 20263am Thu, Aug 20 20264am Thu, Aug 20 2026

Date	08/15							08/16
Hour (EDT)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°C)	29	28	27	24	24	23	22	22	21	21	21	21	20	20	20	20	21	21	22	23	23	24	26	26
Dewpoint (°C)	18	18	18	19	18	18	18	18	18	18	18	18	18	18	18	18	19	20	21	21	22	23	23	23
Heat Index (°C)	30	29	28	24	24																	24	26	26
Surface Wind (mph)	3	2	2	1	1	1	1	2	2	2	2	2	2	2	2	3	3	3	3	5	5	5	5	5
Wind Dir	SE	SE	SE	SE	SE	E	E	E	E	E	E	SE	SE	SE	SE	S	S	S	S	S	S	SW	SW	W
Gust
Sky Cover (%)	68	70	71	72	74	77	79	81	83	85	88	90	93	95	98	100	99	99	98	97	97	96	93	90
Precipitation Potential (%)	7	7	4	2	2	2	3	3	3	5	10	24	27	36	55	93	90	87	81	91	72	93	79	66
Relative Humidity (%)	53	55	60	71	71	76	79	79	81	81	84	84	87	87	90	90	90	93	93	90	93	90	85	85
Rain	--	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Lkly	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Lkly	Ocnl	Ocnl	Lkly
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Date								08/17
Hour (EDT)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°C)	26	26	25	24	23	22	22	22	22	22	22	22	22	21	22	22	22	23	24	26	26	27	27	28
Dewpoint (°C)	23	23	23	22	22	22	22	21	21	21	21	21	21	21	21	21	21	22	22	22	22	22	22	21
Heat Index (°C)	26	26	25	24															24	26	26	28	29	30
Surface Wind (mph)	5	3	3	3	3	3	5	5	5	5	5	6	6	6	6	6	6	6	7	8	9	9	9	9
Wind Dir	SW	SW	SW	S	S	S	SW	SW	SW	SW	W	W	W	W	W	W	W	NW	NW	NW	NW	NW	NW	NW
Gust
Sky Cover (%)	88	85	83	81	82	92	84	77	70	63	61	59	57	55	53	51	49	48	46	45	45	57	57	57
Precipitation Potential (%)	72	77	69	59	52	87	76	53	17	14	24	12	16	10	17	23	23	23	23	23	23	35	35	35
Relative Humidity (%)	85	85	88	90	97	100	97	97	93	93	97	97	97	100	97	97	93	90	87	82	79	74	72	67
Rain	Lkly	Ocnl	Lkly	Lkly	Chc	Ocnl	Ocnl	Chc	SChc	--	SChc	--	SChc	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc
Thunder	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc

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