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 January 19, Monday | 00 | -7.8 18 | 739.3 29.11 985.65 985.65 | 757.9 29.84 1010.45 1010.45 | -0.8 -0.03 -1.07 -1.07 | 81 | Wind blowing from the west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | -7.8 18 | 300-600 984-1968 | 4.0 2.5 | -10.6 13 | 0.3 0.01 | 6 | |||||||||||||
| January 18, Sunday | 21 | -8.3 17 | 740.1 29.14 986.72 986.72 | 758.9 29.88 1011.78 1011.78 | -1.0 -0.04 -1.33 -1.33 | 74 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | 1000-1500 3281-4921 | 14.0 8.7 | -12.2 10 | 0.3 0.01 | 3 | ||||||||||||||
18 | -8.9 16 | 741.1 29.18 988.05 988.05 | 759.9 29.92 1013.12 1013.12 | -0.7 -0.03 -0.93 -0.93 | 77 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | -13.3 8 | -8.3 17 | 1000-1500 3281-4921 | 4.8 3.0 | -12.2 10 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
15 | -8.3 17 | 741.8 29.2 988.99 988.99 | 760.6 29.94 1014.05 1014.05 | -1.1 -0.04 -1.47 -1.47 | 56 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | 600-1000 1968-3281 | 16.0 9.9 | -15.6 4 | ||||||||||||||||||
12 | -10.0 14 | 742.9 29.25 990.45 990.45 | 761.8 29.99 1015.65 1015.65 | -2.2 -0.09 -2.93 -2.93 | 58 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 70 – 80%. 7/10 – 8/10. 6 oktas | -14.4 6 | -10.0 14 | 600-1000 1968-3281 | 16.0 9.9 | -16.7 2 | |||||||||||||||
09 | -13.9 7 | 745.1 29.33 993.39 993.39 | 763.9 30.07 1018.45 1018.45 | 0.0 0 0 0 | 63 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | 16.0 9.9 | -19.4 -3 | |||||||||||||||||
06 | -13.3 8 | 745.1 29.33 993.39 993.39 | 764.0 30.08 1018.58 1018.58 | 0.0 0 0 0 | 63 | Wind blowing from the west-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 100%. 10/10. 8 oktas | -13.3 8 | -4.4 24 | 300-600 984-1968 | 16.0 9.9 | -18.9 -2 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||
03 | -11.7 11 | 745.1 29.33 993.39 993.39 | 764.1 30.08 1018.72 1018.72 | -0.2 -0.01 -0.27 -0.27 | 73 | Wind blowing from the west-southwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | 300-600 984-1968 | 16.0 9.9 | -15.6 4 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||
00 | -10.0 14 | 745.3 29.34 993.65 993.65 | 764.3 30.09 1018.98 1018.98 | 0.0 0 0 0 | 73 | Wind blowing from the west-southwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | -11.1 12 | 600-1000 1968-3281 | 11.0 6.8 | -13.9 7 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||