Chicago Weather O'Hare Data January 31 2015

D a t e	Time (cst)	Wind (mph)	Vis. (mi.)	Weather	Sky Cond.	Temperature (ºF)				Relative Humidity	Wind Chill (°F)	Heat Index (°F)	Pressure		Precipitation (in.)
						Air	Dwpt	6 hour					altimeter (in)	sea level (mb)	1 hr	3 hr	6 hr
								Max.

31	23:51	NE 8	0.75	Light Snow Fog/Mist	BKN005 OVC010	30	29	35	30	96%	22	NA	30.14	1021.3	0.03		0.12
31	22:51	E 8	0.75	Light Snow Fog/Mist	OVC005	31	29			92%	24	NA	30.15	1021.8	0.04
31	21:51	E 8	1.25	Light Snow Fog/Mist	SCT006 OVC012	31	29			92%	24	NA	30.15	1021.6	0.03
31	20:51	NE 8	1.50	Light Snow Fog/Mist	OVC011	31	29			92%	24	NA	30.14	1021.5	0.02	0.02
31	19:51	Calm	8.00	Light Snow	OVC017	34	28			79%	NA	NA	30.16	1022.1
31	18:51	Calm	10.00	Overcast	OVC021	34	28			79%	NA	NA	30.16	1022.3
31	17:51	Calm	10.00	Overcast	BKN023 OVC029	35	27	36	34	72%	NA	NA	30.17	1022.4
31	16:51	W 6	10.00	Overcast	FEW024 BKN047 BKN090 OVC200	35	26			70%	30	NA	30.16	1022.2
31	15:51	W 6	10.00	Overcast	FEW065 BKN090 OVC200	36	26			67%	31	NA	30.16	1022.1
31	14:51	W 8	10.00	Overcast	SCT065 BKN080 OVC200	35	25			67%	28	NA	30.16	1022.1
31	13:51	W 9	10.00	Overcast	BKN065 OVC080	34	24			67%	27	NA	30.16	1022.1
31	12:51	W 10	10.00	Overcast	FEW070 BKN085 OVC250	35	23			61%	27	NA	30.16	1022.1
31	11:51	W 13	10.00	Mostly Cloudy	BKN085 BKN250	35	23	35	24	61%	26	NA	30.18	1022.9
31	10:51	W 13	10.00	Mostly Cloudy	SCT085 BKN250	33	21			61%	24	NA	30.20	1023.6
31	09:51	SW 12	10.00	Mostly Cloudy	BKN085	31	20			64%	22	NA	30.21	1024.1
31	08:51	SW 9	10.00	Partly Cloudy	SCT048 SCT200	28	20			72%	19	NA	30.23	1024.5
31	07:51	SW 7	10.00	Mostly Cloudy	SCT045 BKN200	25	19			78%	17	NA	30.23	1024.5
31	06:51	SW 8	10.00	Mostly Cloudy	BKN048	24	18			77%	15	NA	30.23	1024.7
31	05:51	SW 6	10.00	Fair	CLR	24	18	26	19	77%	17	NA	30.24	1025.0
31	04:51	SW 8	10.00	Mostly Cloudy	BKN095	25	18			75%	16	NA	30.24	1025.0
31	03:51	SW 6	10.00	Overcast	OVC095	26	18			71%	19	NA	30.26	1025.6
31	02:51	SW 6	10.00	Overcast	OVC100	24	17			75%	17	NA	30.28	1026.5
31	01:51	SW 5	10.00	Overcast	OVC100	23	16			74%	17	NA	30.30	1027.0
31	00:51	S 6	10.00	Overcast	OVC095	21	14			74%	13	NA	30.31	1027.4

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS

Chicago Weather O'Hare Data January 30 2015

D a t e	Time (cst)	Wind (mph)	Vis. (mi.)	Weather	Sky Cond.	Temperature (ºF)				Relative Humidity	Wind Chill (°F)	Heat Index (°F)	Pressure		Precipitation (in.)
						Air	Dwpt	6 hour					altimeter (in)	sea level (mb)	1 hr	3 hr	6 hr
								Max.

30	23:51	S 7	10.00	A Few Clouds	FEW200	20	13	25	18	74%	11	NA	30.35	1028.6
30	22:51	S 5	10.00	A Few Clouds	FEW250	20	12			71%	13	NA	30.36	1029.0
30	21:51	SW 3	10.00	A Few Clouds	FEW130	21	13			71%	NA	NA	30.37	1029.5
30	20:51	Calm	10.00	A Few Clouds	FEW130	22	13			68%	NA	NA	30.39	1030.1
30	19:51	Calm	10.00	A Few Clouds	FEW130	23	12			63%	NA	NA	30.41	1030.9
30	18:51	W 6	10.00	Partly Cloudy	SCT130	23	11			60%	16	NA	30.41	1030.8
30	17:51	W 7	10.00	Fair	CLR	25	11	30	25	55%	17	NA	30.42	1031.0
30	16:51	W 7	10.00	Fair	CLR	27	9			46%	19	NA	30.42	1031.0
30	15:51	W 3	10.00	A Few Clouds	FEW035 FEW250	28	9			44%	NA	NA	30.43	1031.6
30	14:51	Vrbl 3	10.00	Partly Cloudy	FEW035 FEW170 SCT250	28	8			43%	NA	NA	30.45	1032.0
30	13:51	NW 5	10.00	Mostly Cloudy	FEW035 BKN170 BKN250	28	8			43%	22	NA	30.47	1032.6
30	12:51	W 5	10.00	Mostly Cloudy	FEW035 BKN250	28	8			43%	22	NA	30.48	1033.1
30	11:51	Vrbl 6	10.00	A Few Clouds	FEW034 FEW250	25	8	27	19	48%	18	NA	30.51	1034.0
30	10:51	Vrbl 3	10.00	A Few Clouds	FEW034 FEW160	26	7			44%	NA	NA	30.52	1034.5
30	09:51	N 8	10.00	Mostly Cloudy	FEW036 BKN160	23	7			50%	14	NA	30.52	1034.3
30	08:51	N 9	10.00	A Few Clouds	FEW034 FEW120	22	9			57%	12	NA	30.50	1033.8
30	07:51	NW 10	10.00	A Few Clouds	FEW034	20	8			60%	9	NA	30.51	1033.9
30	06:51	N 9	10.00	A Few Clouds	FEW032	20	8			60%	10	NA	30.49	1033.2
30	05:51	N 13	10.00	A Few Clouds	FEW050	21	9	29	21	59%	8	NA	30.46	1032.4
30	04:51	N 10 G 20	10.00	A Few Clouds	FEW050	22	8			55%	11	NA	30.43	1031.3
30	03:51	N 14	10.00	Fair	CLR	23	9			55%	11	NA	30.41	1030.7
30	02:51	N 15	10.00	Mostly Cloudy	BKN050	25	8			48%	13	NA	30.39	1029.9
30	01:51	N 12	10.00	Overcast	OVC050	26	12			55%	15	NA	30.37	1029.2
30	00:51	N 16	10.00	Overcast	OVC055	28	14			56%	16	NA	30.34	1028.1

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS

Chicago Weather O'Hare Data January 29 2015

D a t e	Time (cst)	Wind (mph)	Vis. (mi.)	Weather	Sky Cond.	Temperature (ºF)				Relative Humidity	Wind Chill (°F)	Heat Index (°F)	Pressure		Precipitation (in.)
						Air	Dwpt	6 hour					altimeter (in)	sea level (mb)	1 hr	3 hr	6 hr
								Max.

29	23:51	N 15	10.00	Overcast	SCT028 BKN037 OVC060	29	22	34	29	75%	18	NA	30.31	1027.2
29	22:51	N 18 G 32	9.00	Light Snow	BKN039 OVC047	31	21			67%	19	NA	30.28	1026.1
29	21:51	NW 14	10.00	Overcast	OVC044	33	21			61%	23	NA	30.24	1024.8
29	20:51	NW 15	10.00	Overcast	OVC047	34	19			54%	24	NA	30.22	1024.0
29	19:51	NW 12	10.00	Overcast	OVC040	34	21			59%	25	NA	30.20	1023.3
29	18:51	NW 15	10.00	Overcast	OVC036	34	23			64%	24	NA	30.18	1022.5
29	17:51	NW 13	9.00	Overcast	OVC030	34	24	34	33	67%	25	NA	30.14	1021.4
29	16:51	NW 17	9.00	Overcast	OVC028	34	25			70%	23	NA	30.09	1019.7
29	15:51	NW 15 G 23	9.00	Overcast	OVC024	34	26			73%	24	NA	30.05	1018.3
29	14:51	NW 13 G 28	10.00	Overcast	OVC022	34	26			73%	25	NA	30.02	1017.1
29	13:51	NW 15	10.00	Overcast	OVC021	33	26			75%	23	NA	29.98	1015.8
29	12:51	NW 16 G 25	10.00	Overcast	OVC022	33	26			75%	23	NA	29.95	1014.7
29	11:51	NW 20 G 25	9.00	Overcast	OVC022	33	26	35	32	75%	21	NA	29.93	1014.3			0.01
29	10:51	NW 22 G 28	8.00	Overcast and Breezy	BKN022 OVC055	34	27			76%	22	NA	29.90	1013.2
29	09:51	NW 23	6.00	Overcast with Haze and Breezy	OVC016	33	27			78%	21	NA	29.86	1011.6	0.01
29	08:51	NW 21 G 26	4.00	Light Snow Fog/Mist and Breezy	BKN016 OVC040	32	29			88%	20	NA	29.81	1010.3
29	07:51	NW 16	10.00	Overcast	OVC019	35	28			76%	25	NA	29.77	1008.7
29	06:51	NW 10	10.00	Overcast	OVC022	35	28			76%	27	NA	29.72	1006.9
29	05:51	NW 6	10.00	Overcast	BKN027 OVC035	33	28	35	31	82%	27	NA	29.70	1006.4
29	04:51	S 5	10.00	Partly Cloudy	FEW090 SCT220	32	26			79%	27	NA	29.68	1005.7
29	03:51	S 7	10.00	Partly Cloudy	SCT090	33	27			78%	27	NA	29.70	1006.3
29	02:51	S 7	10.00	Overcast	OVC100	35	27			72%	29	NA	29.73	1007.2
29	01:51	S 10	10.00	Overcast	OVC095	35	26			70%	27	NA	29.75	1007.9
29	00:51	S 12	10.00	Overcast	OVC085	34	26			73%	25	NA	29.77	1008.8

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS