Point Forecast: Swissvale PA  40.43N 79.9W (Elev. 899 ft)	Last Update: 7:07 pm EDT Jul 12, 2025

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Date	07/12				07/13
Hour (EDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°F)	85	82	80	78	76	76	74	73	72	72	71	71	73	76	79	81	84	85	86	87	86	85	84	82
Surface Wind (mph)	5	3	3	3	3	3	3	3	3	3	3	5	5	6	6	7	7	8	8	8	8	7	6	6
Wind Dir	SW	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SW	SW	SW	SW	SW	W	W	W	W
Gust
Relative Humidity (%)	63	73	80	84	87	87	90	92	95	94	95	98	96	90	83	80	73	71	69	67	69	69	72	76
Mixing Height (x100ft)	8	7	7	6	6	7	6	6	6	7	7	8	12	18	25	33	42	51	59	54	46	34	28	20
Ventilation Rate (x1000 mph-ft)	5	5	4	4	5	5	5	5	5	4	5	6	9	14	20	30	50	67	83	70	55	41	28	18
Date					07/14
Hour (EDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°F)	80	77	76	74	73	72	71	71	70	70	70	70	71	74	77	80	81	83	85	85	86	86	84	82
Surface Wind (mph)	3	2	2	2	2	2	2	2	2	2	2	2	2	2	3	3	3	5	5	5	6	6	5	3
Wind Dir	W	SW	W	W	W	W	W	W	W	NW	NW	W	W	W	W	W	W	W	W	W	W	W	W	NW
Gust
Relative Humidity (%)	81	89	92	95	97	98	99	100	100	100	100	100	100	92	84	77	70	64	58	57	55	54	57	61
Mixing Height (x100ft)	9	7	6	6	6	6	6	6	6	6	5	5	7	13	21	30	41	51	59	65	66	61	46	26
Ventilation Rate (x1000 mph-ft)	7	6	5	4	4	4	4	4	3	3	2	2	4	8	13	21	29	41	47	52	53	49	37	18

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