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 January 19, Sunday | 15 | -12.2 10 | 749.5 29.51 999.25 999.25 | 768.6 30.26 1024.72 1024.72 | 0.2 0.01 0.27 0.27 | 41 | Wind blowing from the north-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 | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | 16.0 9.9 | -22.8 -9 | ||||||||||||||||
12 | -13.3 8 | 749.3 29.5 998.98 998.98 | 768.5 30.26 1024.58 1024.58 | -0.2 -0.01 -0.27 -0.27 | 45 | Wind blowing from the west-northwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 20–30%. 2/10–3/10. 2 oktas | -15.6 4 | -10.0 14 | 600-1000 1968-3281 | 16.0 9.9 | -22.8 -9 | ||||||||||||||||
09 | -15.0 5 | 749.5 29.51 999.25 999.25 | 768.6 30.26 1024.72 1024.72 | 1.2 0.05 1.6 1.6 | 52 | Wind blowing from the north-northwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 600-1000 1968-3281 | 16.0 9.9 | -22.8 -9 | ||||||||||||||||||
06 | -13.9 7 | 748.3 29.46 997.65 997.65 | 767.2 30.2 1022.85 1022.85 | 0.5 0.02 0.67 0.67 | 52 | Wind blowing from the north-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | -13.9 7 | 4.4 40 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -21.7 -7 | ||||||||||||||||
03 | -12.2 10 | 747.8 29.44 996.98 996.98 | 766.7 30.19 1022.18 1022.18 | 0.0 0 0 0 | 48 | Wind blowing from the north-northwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -21.1 -6 | ||||||||||||||||||
00 | -10.0 14 | 747.8 29.44 996.98 996.98 | 766.6 30.18 1022.05 1022.05 | 1.3 0.05 1.73 1.73 | 42 | Wind blowing from the north-northwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -10.0 14 | 4.4 40 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -20.6 -5 | ||||||||||||||||
| January 18, Saturday | 21 | -6.1 21 | 746.5 29.39 995.25 995.25 | 765.4 30.13 1020.45 1020.45 | 0.9 0.04 1.2 1.2 | 39 | Wind blowing from the north-northwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -17.8 -0 | ||||||||||||||||
18 | -3.9 25 | 745.6 29.35 994.05 994.05 | 764.2 30.09 1018.85 1018.85 | 2.0 0.08 2.67 2.67 | 44 | 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 | -3.9 25 | 0.0 32 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | -14.4 6 | ||||||||||||||||
15 | -1.7 29 | 743.6 29.28 991.39 991.39 | 761.8 29.99 1015.65 1015.65 | 0.7 0.03 0.93 0.93 | 41 | Wind blowing from the north-northwest | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 600-1000 1968-3281 | 16.0 9.9 | -13.3 8 | ||||||||||||||||||