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 29, Saturday | 01 | 20.6 69 | 747.1 29.41 996.05 996.05 | 764.8 30.11 1019.65 1019.65 | 0.3 0.01 0.4 0.4 | 68 | Wind blowing from the south-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 18.9 66 | 26.7 80 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | 14.4 58 | |||||||||||||||
| August 28, Friday | 22 | 22.8 73 | 746.8 29.4 995.65 995.65 | 764.5 30.1 1019.25 1019.25 | 0.5 0.02 0.67 0.67 | 62 | Wind blowing from the west-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | 15.0 59 | |||||||||||||||||
19 | 26.7 80 | 746.3 29.38 994.99 994.99 | 763.8 30.07 1018.32 1018.32 | 0.0 0 0 0 | 49 | 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 | 18.9 66 | 28.3 83 | 1500-2000 4921-6562 | 16.0 9.9 | 15.0 59 | ||||||||||||||||
16 | 27.2 81 | 746.3 29.38 994.99 994.99 | 763.9 30.07 1018.45 1018.45 | -1.0 -0.04 -1.33 -1.33 | 45 | Wind blowing from the south-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 1500-2000 4921-6562 | 16.0 9.9 | 14.4 58 | ||||||||||||||||||
13 | 27.2 81 | 747.3 29.42 996.32 996.32 | 765.0 30.12 1019.92 1019.92 | -0.5 -0.02 -0.67 -0.67 | 44 | Wind blowing from the south-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 oktas | 19.4 67 | 27.2 81 | 1500-2000 4921-6562 | 16.0 9.9 | 13.9 57 | ||||||||||||||||
10 | 23.9 75 | 747.8 29.44 996.98 996.98 | 765.5 30.14 1020.58 1020.58 | 0.5 0.02 0.67 0.67 | 64 | Wind blowing from the south-southeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | 16.0 9.9 | 16.7 62 | ||||||||||||||||||
07 | 19.4 67 | 747.3 29.42 996.32 996.32 | 765.1 30.12 1020.05 1020.05 | 1.0 0.04 1.33 1.33 | 84 | Calm, no wind | Calm | 50%. 5/10. 4 oktas | 18.9 66 | 27.8 82 | 1000-1500 3281-4921 | 16.0 9.9 | 16.7 62 | ||||||||||||||||
04 | 20.6 69 | 746.3 29.38 994.99 994.99 | 763.8 30.07 1018.32 1018.32 | 0.5 0.02 0.67 0.67 | 78 | Calm, no wind | Calm | 70 – 80%. 7/10 – 8/10. 6 oktas | 2000-2500 6562-8202 | 16.0 9.9 | 16.7 62 | ||||||||||||||||||
01 | 21.7 71 | 745.8 29.36 994.32 994.32 | 763.5 30.06 1017.92 1017.92 | 0.7 0.03 0.93 0.93 | 76 | Wind blowing from the east | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 oktas | 18.3 65 | 24.4 76 | 1500-2000 4921-6562 | 16.0 9.9 | 17.2 63 | ||||||||||||||||