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 | |
| 2025 September 27, Saturday | 01 | 18.3 65 | 741.4 29.19 988.45 988.45 | 758.8 29.87 1011.65 1011.65 | 0.3 0.01 0.4 0.4 | 90 | Calm, no wind | Calm | no clouds no clouds no clouds | 15.0 59 | 25.6 78 | 16.0 9.9 | 16.7 62 | ||||||||||||||||
| September 26, Friday | 22 | 20.0 68 | 741.1 29.18 988.05 988.05 | 758.7 29.87 1011.52 1011.52 | 0.5 0.02 0.67 0.67 | 63 | Wind blowing from the north | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | 16.0 9.9 | 12.8 55 | |||||||||||||||||
19 | 25.6 78 | 740.6 29.16 987.39 987.39 | 758.2 29.85 1010.85 1010.85 | 0.0 0 0 0 | 45 | Wind blowing from the south | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 20–30%. 2/10–3/10. 2 oktas | 15.0 59 | 28.3 83 | 1500-2000 4921-6562 | 16.0 9.9 | 12.8 55 | ||||||||||||||||
16 | 28.3 83 | 740.6 29.16 987.39 987.39 | 758.1 29.85 1010.72 1010.72 | -1.2 -0.05 -1.6 -1.6 | 36 | Wind blowing from the south-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 1500-2000 4921-6562 | 16.0 9.9 | 11.7 53 | ||||||||||||||||||
13 | 26.7 80 | 741.8 29.2 988.99 988.99 | 759.4 29.9 1012.45 1012.45 | -0.8 -0.03 -1.07 -1.07 | 39 | Wind blowing from the south-west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | no clouds no clouds no clouds | 15.0 59 | 26.7 80 | 16.0 9.9 | 11.7 53 | |||||||||||||||||
10 | 21.1 70 | 742.6 29.24 990.05 990.05 | 760.2 29.93 1013.52 1013.52 | 0.5 0.02 0.67 0.67 | 51 | Wind blowing from the south-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | no clouds no clouds no clouds | 16.0 9.9 | 10.6 51 | |||||||||||||||||||
07 | 15.0 59 | 742.1 29.22 989.39 989.39 | 759.8 29.91 1012.98 1012.98 | 0.5 0.02 0.67 0.67 | 83 | Wind blowing from the west-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | no clouds no clouds no clouds | 15.0 59 | 25.0 77 | 16.0 9.9 | 12.2 54 | |||||||||||||||||
04 | 15.6 60 | 741.6 29.2 988.72 988.72 | 759.1 29.89 1012.05 1012.05 | 0.0 0 0 0 | 86 | Wind blowing from the west-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | no clouds no clouds no clouds | 16.0 9.9 | 13.3 56 | |||||||||||||||||||
01 | 16.1 61 | 741.6 29.2 988.72 988.72 | 759.3 29.89 1012.32 1012.32 | -0.2 -0.01 -0.27 -0.27 | 87 | Wind blowing from the south-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | 14.4 58 | 20.0 68 | 16.0 9.9 | 13.9 57 | |||||||||||||||||