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 July 27, Monday	07	26.1 79	740.3 29.15 986.99 986.99	757.8 29.83 1010.32 1010.32	0.4 0.02 0.53 0.53	97	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas	Mist.			26.1 79	33.3 92			50-100 164-328			3.2 2.0	25.6 78
	04	26.1 79	739.9 29.13 986.45 986.45	757.1 29.81 1009.38 1009.38	0.0 0 0 0	94	Wind blowing from the south-west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			100%. 10/10. 8 oktas	Mist.							100-200 328-656			6.0 3.7	25.0 77
	01	26.7 80	739.9 29.13 986.45 986.45	757.3 29.81 1009.65 1009.65	-0.4 -0.02 -0.53 -0.53	90	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			20–30%. 2/10–3/10. 2 oktas				22.2 72	31.7 89			2500 or more, or no clouds. 8202 or more, or no clouds.			12.0 7.5	25.0 77
July 26, Sunday	22	28.9 84	740.3 29.15 986.99 986.99	757.8 29.83 1010.32 1010.32	0.2 0.01 0.27 0.27	80	Wind blowing from the south-west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			20–30%. 2/10–3/10. 2 oktas								1000-1500 3281-4921			16.0 9.9	25.0 77
	19	31.7 89	740.1 29.14 986.72 986.72	757.4 29.82 1009.78 1009.78	-0.5 -0.02 -0.67 -0.67	59	Wind blowing from the west-southwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				22.2 72	33.3 92			1000-1500 3281-4921			16.0 9.9	22.8 73
	16	32.8 91	740.6 29.16 987.39 987.39	757.9 29.84 1010.45 1010.45	-1.2 -0.05 -1.6 -1.6	52	Wind blowing from the south-west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			50%. 5/10. 4 oktas								1500-2000 4921-6562			16.0 9.9	21.7 71
	13	31.1 88	741.8 29.2 988.99 988.99	759.1 29.89 1012.05 1012.05	-0.3 -0.01 -0.4 -0.4	54	Wind blowing from the west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				22.8 73	31.1 88			1000-1500 3281-4921			16.0 9.9	20.6 69
	10	27.2 81	742.1 29.22 989.39 989.39	759.5 29.9 1012.58 1012.58	0.0 0 0 0	74		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	22.2 72
	07	22.8 73	742.1 29.22 989.39 989.39	759.4 29.9 1012.45 1012.45	0.0 0 0 0	90	Wind blowing from the south-west	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas	Mist.			22.2 72	26.7 80			200-300 656-984			9.0 5.6	21.1 70