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 February 17, Monday | 00 | -12.8 9 | 747.8 29.44 996.98 996.98 | 766.6 30.18 1022.05 1022.05 | 1.5 0.06 2 2 | 55 | Wind blowing from the west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | no clouds no clouds no clouds | -12.8 9 | -2.8 27 | 16.0 9.9 | -20.0 -4 | ||||||||||||||||
| February 16, Sunday | 21 | -9.4 15 | 746.3 29.38 994.99 994.99 | 765.0 30.12 1019.92 1019.92 | 1.9 0.07 2.53 2.53 | 56 | Wind blowing from the west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | no clouds no clouds no clouds | 16.0 9.9 | -16.7 2 | ||||||||||||||||||
18 | -5.6 22 | 744.4 29.31 992.45 992.45 | 763.0 30.04 1017.25 1017.25 | 2.3 0.09 3.07 3.07 | 57 | Wind blowing from the west-northwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 50%. 5/10. 4 oktas | -5.6 22 | -2.8 27 | 600-1000 1968-3281 | 16.0 9.9 | -12.8 9 | ||||||||||||||||
15 | -3.9 25 | 742.1 29.22 989.39 989.39 | 760.7 29.95 1014.18 1014.18 | 1.8 0.07 2.4 2.4 | 63 | Wind blowing from the west-northwest | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | 600-1000 1968-3281 | 16.0 9.9 | -10.0 14 | |||||||||||||||||
12 | -3.3 26 | 740.3 29.15 986.99 986.99 | 758.9 29.88 1011.78 1011.78 | 1.2 0.05 1.6 1.6 | 71 | Wind blowing from the north-west | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 100%. 10/10. 8 oktas | -3.9 25 | -2.8 27 | 600-1000 1968-3281 | 16.0 9.9 | -7.8 18 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
09 | -3.9 25 | 739.1 29.1 985.39 985.39 | 757.4 29.82 1009.78 1009.78 | 1.7 0.07 2.27 2.27 | 72 | 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 | 70 – 80%. 7/10 – 8/10. 6 oktas | 600-1000 1968-3281 | 16.0 9.9 | -8.3 17 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||
06 | -3.3 26 | 737.4 29.03 983.12 983.12 | 755.8 29.76 1007.65 1007.65 | 0.3 0.01 0.4 0.4 | 81 | Wind blowing from the north-west | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | -3.3 26 | 0.6 33 | 300-600 984-1968 | 9.0 5.6 | -6.1 21 | Trace of precipitation Trace of precipitation | 6 | ||||||||||||
03 | -2.8 27 | 737.1 29.02 982.72 982.72 | 755.5 29.74 1007.25 1007.25 | -0.7 -0.03 -0.93 -0.93 | 78 | Wind blowing from the north-northwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | 300-600 984-1968 | 16.0 9.9 | -6.1 21 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||
00 | -2.8 27 | 737.8 29.05 983.65 983.65 | 756.2 29.77 1008.18 1008.18 | -1.8 -0.07 -2.4 -2.4 | 81 | Wind blowing from the north-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 | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | -3.3 26 | 0.0 32 | 300-600 984-1968 | 14.0 8.7 | -5.6 22 | Trace of precipitation Trace of precipitation | 6 | ||||||||||||