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 August 27, Thursday | 07 | 18.9 66 | 743.3 29.26 990.99 990.99 | 760.9 29.96 1014.45 1014.45 | 0.7 0.03 0.93 0.93 | 84 | Wind blowing from the north-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | no clouds no clouds no clouds | 18.3 65 | 28.9 84 | 16.0 9.9 | 16.1 61 | ||||||||||||||||
04 | 20.0 68 | 742.6 29.24 990.05 990.05 | 760.0 29.92 1013.25 1013.25 | 0.3 0.01 0.4 0.4 | 76 | Wind blowing from the north-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | 16.0 9.9 | 15.6 60 | |||||||||||||||||||
01 | 21.7 71 | 742.3 29.22 989.65 989.65 | 759.7 29.91 1012.85 1012.85 | 0.5 0.02 0.67 0.67 | 71 | Wind blowing from the north-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 21.1 70 | 27.2 81 | 2000-2500 6562-8202 | 16.0 9.9 | 16.1 61 | ||||||||||||||||
| August 26, Wednesday | 22 | 23.3 74 | 741.8 29.2 988.99 988.99 | 759.4 29.9 1012.45 1012.45 | 1.0 0.04 1.33 1.33 | 64 | Wind blowing from the west-northwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 1500-2000 4921-6562 | 16.0 9.9 | 16.1 61 | |||||||||||||||||
19 | 27.2 81 | 740.8 29.17 987.65 987.65 | 758.3 29.85 1010.98 1010.98 | 0.0 0 0 0 | 49 | Wind blowing from the north-west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 50%. 5/10. 4 oktas | 21.1 70 | 28.9 84 | 1500-2000 4921-6562 | 16.0 9.9 | 15.6 60 | ||||||||||||||||
16 | 27.2 81 | 740.8 29.17 987.65 987.65 | 758.4 29.86 1011.12 1011.12 | -0.6 -0.02 -0.8 -0.8 | 51 | Wind blowing from the north-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 1500-2000 4921-6562 | 16.0 9.9 | 16.1 61 | ||||||||||||||||||
13 | 27.8 82 | 741.4 29.19 988.45 988.45 | 758.8 29.87 1011.65 1011.65 | -0.2 -0.01 -0.27 -0.27 | 53 | Wind blowing from the west-northwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 50%. 5/10. 4 oktas | 21.1 70 | 27.8 82 | 1000-1500 3281-4921 | 16.0 9.9 | 17.2 63 | |||||||||||||||
10 | 23.9 75 | 741.6 29.2 988.72 988.72 | 759.0 29.88 1011.92 1011.92 | -0.5 -0.02 -0.67 -0.67 | 74 | Wind blowing from the west | 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 | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | 16.0 9.9 | 18.9 66 | |||||||||||||||||
07 | 21.1 70 | 742.1 29.22 989.39 989.39 | 759.7 29.91 1012.85 1012.85 | -1.0 -0.04 -1.33 -1.33 | 68 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 50%. 5/10. 4 oktas | 21.1 70 | 27.2 81 | 600-1000 1968-3281 | 16.0 9.9 | 15.0 59 | ||||||||||||||||