Weather archive in Chicago / O'Hare (airport)

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Date / Local time		T	Po	P	Pa	U	DD	Ff	ff10	ff3	N	WW	W1	W2	Tn	Tx	Cl	Nh	H	Cm	Ch	VV	Td	RRR	tR	E	Tg	E'	sss
2026 March 15, Sunday	18	3.3 38	727.4 28.64 969.79 969.79	745.3 29.34 993.65 993.65	2.2 0.09 2.93 2.93	89	Wind blowing from the north	Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft)	14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft		100%. 10/10. 8 oktas	Rain, not freezing, continuous, moderate at time of observation.			2.2 36	17.2 63			200-300 656-984			4.8 3.0	1.7 35	26.0 1.02	6
	15	16.7 62	725.2 28.55 966.85 966.85	742.8 29.24 990.32 990.32	-2.2 -0.09 -2.93 -2.93	73	Wind blowing from the south	Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft)	15 m/s 54 km/h 34 mph 29 knots 7 Bft		100%. 10/10. 8 oktas								600-1000 1968-3281			16.0 9.9	11.7 53	0.8 0.03	3
	12	14.4 58	727.4 28.64 969.79 969.79	745.1 29.33 993.39 993.39	-2.0 -0.08 -2.67 -2.67	78	Wind blowing from the south	Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft)	13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft		100%. 10/10. 8 oktas				0.6 33	14.4 58			600-1000 1968-3281			16.0 9.9	10.6 51	3.0 0.12	6
	09	11.7 53	729.4 28.72 972.45 972.45	747.3 29.42 996.32 996.32	-3.7 -0.15 -4.93 -4.93	55	Wind blowing from the south	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)	11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft		100%. 10/10. 8 oktas								1500-2000 4921-6562			16.0 9.9	2.8 37
	06	3.3 38	733.1 28.86 977.39 977.39	751.3 29.58 1001.65 1001.65	-4.3 -0.17 -5.73 -5.73	65	Wind blowing from the east	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				0.6 33	3.3 38			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	-2.8 27	Trace of precipitation Trace of precipitation	6
	03	2.8 37	737.4 29.03 983.12 983.12	755.6 29.75 1007.38 1007.38	-3.4 -0.13 -4.53 -4.53	67	Wind blowing from the east-northeast	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	-2.8 27	Trace of precipitation Trace of precipitation	3
	00	2.2 36	740.8 29.17 987.65 987.65	759.2 29.89 1012.18 1012.18	-3.0 -0.12 -4 -4	67	Wind blowing from the east-northeast	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			100%. 10/10. 8 oktas				-2.1 28	2.2 36			2000-2500 6562-8202			16.0 9.9	-3.3 26
March 14, Saturday	21	1.7 35	743.8 29.28 991.65 991.65	762.3 30.01 1016.32 1016.32	-1.8 -0.07 -2.4 -2.4	72	Wind blowing from the east	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)			100%. 10/10. 8 oktas								1500-2000 4921-6562			16.0 9.9	-2.8 27
March 14, Saturday	18	0.6 33	745.6 29.35 994.05 994.05	764.0 30.08 1018.58 1018.58	-1.5 -0.06 -2 -2	89	Wind blowing from the east	Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft)	9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft		100%. 10/10. 8 oktas				-2.1 28	2.8 37			200-300 656-984			16.0 9.9	-1.1 30	0.3 0.01	6