Weather archive in Chicago / O'Hare (airport)

To receive explanations, hover over the appropriate heading

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 August 8, Saturday	16	28.9 84	743.8 29.28 991.65 991.65	761.2 29.97 1014.85 1014.85	-0.8 -0.03 -1.07 -1.07	40	Wind blowing from the west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			50%. 5/10. 4 oktas								1500-2000 4921-6562			16.0 9.9	13.9 57
	13	27.2 81	744.6 29.31 992.72 992.72	762.1 30 1016.05 1016.05	0.0 0 0 0	49	Wind blowing from the north-northwest	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas				21.7 71	27.2 81			1000-1500 3281-4921			16.0 9.9	15.6 60
	10	24.4 76	744.6 29.31 992.72 992.72	761.9 30 1015.78 1015.78	0.8 0.03 1.07 1.07	72	Wind blowing from the north-west	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			50%. 5/10. 4 oktas								600-1000 1968-3281			16.0 9.9	18.9 66
	07	21.7 71	743.8 29.28 991.65 991.65	761.2 29.97 1014.85 1014.85	0.9 0.04 1.2 1.2	73	Wind blowing from the west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			20–30%. 2/10–3/10. 2 oktas				21.7 71	30.6 87			1000-1500 3281-4921			16.0 9.9	16.7 62
	04	22.8 73	742.9 29.25 990.45 990.45	760.4 29.94 1013.78 1013.78	-0.7 -0.03 -0.93 -0.93	71	Wind blowing from the west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			50%. 5/10. 4 oktas								2000-2500 6562-8202			16.0 9.9	17.2 63
	01	25.0 77	743.6 29.28 991.39 991.39	761.0 29.96 1014.58 1014.58	1.3 0.05 1.73 1.73	82	Wind blowing from the west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				20.0 68	28.9 84			2000-2500 6562-8202			16.0 9.9	21.7 71
August 7, Friday	22	26.7 80	742.3 29.22 989.65 989.65	759.7 29.91 1012.85 1012.85	-1.3 -0.05 -1.73 -1.73	69	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								1000-1500 3281-4921			16.0 9.9	20.6 69
	19	28.9 84	743.6 29.28 991.39 991.39	760.9 29.96 1014.45 1014.45	0.0 0 0 0	57	Wind blowing from the west-southwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				20.0 68	30.6 87			1000-1500 3281-4921			16.0 9.9	19.4 67
	16	30.0 86	743.6 29.28 991.39 991.39	761.2 29.97 1014.85 1014.85	-1.5 -0.06 -2 -2	53		Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			50%. 5/10. 4 oktas								1000-1500 3281-4921			16.0 9.9	19.4 67