Temperature
63 F at 10 PM; 66 F at its warmest, 3 PM, and 60 F at its coolest, 2 AM.
- Now
- 63F
- 10 PM
- Highest
- 66F
- 3 PM
- Lowest
- 60F
- 2 AM
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Coming up. Tomorrow is 10 degrees cooler: a high of 57° after 67° today.
Now. Chicago Midway International Airport is 64° and light rain at 11 PM. The dew point is 60°, so the air feels a little humid. Moderate breeze from the west at 16 mph.
Today and tonight. Tonight falls to about 50° by 7 AM, under cloud.
The week. The warmest day ahead is Wednesday, near 71°, and the coolest tomorrow, near 57°. Rain is possible tomorrow (33%). The windiest day is tomorrow, with wind to 23 mph.
The sky now. The Moon is a waxing crescent, 26% lit, and stays below the horizon until dawn. The next full Moon is Sunday, Oct 25. Look for Saturn, bright in the south. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. Cloud is forecast to cover most of the night, so the sky will be hard to see. The day is 11 hours 8 minutes long, 3 minutes shorter than yesterday.
As of 11:00 PM in Chicago Midway International Airport, Illinois.
Air quality
Index 27, good, led by fine particles. Read at 10 PM from its reporting area, Chicago (IL), 5 miles off.
Good each day through Mon Oct 19, led by fine particles. Yesterday measured 36, good.
No smoke near the ground through Sat 7 PM.
Precipitation
0.43 in in the last 24 hours, 0.73 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 8 miles or more through Sat 7 PM, lowest 8 miles Thu 11 PM.
F
Now, today, and the week
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 04L / 22R | 5,507 ft | 150 ft | Asphalt | 44° / 224° | 7 mph head, on 22R | 15 mph from the right |
| 04R / 22L | 6,445 ft | 150 ft | Asphalt and concrete | 43° / 223° | 6 mph head, on 22L | 15 mph from the right |
| 13L / 31R | 6,522 ft | 150 ft | Concrete | 134° / 314° | 15 mph head, on 31R | 7 mph from the left |
| 13R / 31L | 3,859 ft | 60 ft | Concrete | 134° / 314° | 15 mph head, on 31L | 7 mph from the left |
Measured here
Every hour from Chicago (MDW), Chicago Midway International Airport's own instrument, measure by measure, on the field's own clock.
63 F at 10 PM; 66 F at its warmest, 3 PM, and 60 F at its coolest, 2 AM.
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
A dew point of 61 F, the air 92% saturated; the humidity ran from 72% at 12 AM to 99% at 7 PM.
How it is measured: Humidity variables, Field Book FB-WAT-002
15 mph from the west northwest at 10 PM; at its strongest 15 mph, 10 PM, with a gust of 32 mph at 10 PM.
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
29.79 inHg at 10 PM, rising 0.05 inHg over 3 hours; 0.36 inHg lower than a day before.
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Down to 1 mile at 5 PM; 7 miles now.
How it is measured: Fog types, Field Book FB-WAT-020
The lowest cloud base came down to 500 ft at 7 PM; a base was reported in 23 of the hours.
How it is measured: Cloud classification, Field Book FB-SKY-001
0.42 in measured in the gauge, the most, 0.30 in, in the hour to 5 PM.
How it is measured: ASOS, Field Book FB-INS-002
Chicago: every reading, the last 7 days, 30 days and the year, and how well it reports
The 5 instruments nearest Chicago Midway International Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.0 miles away.
measured now3 instruments
ChicagoMDW
At an airfield/0.0 mi away/617 ft/3 ft below here
temp, wind, gust, visibility, precip, pressure
Bedford Park - ISWS Lake Michigan DiversionBPRI2
At a river or reservoir gauge/2.1 mi away/623 ft/3 ft above here
temp, wind, gust, humidity, pressure
US-34 @ Fox River BridgeSS1924
Beside a road/31.9 mi away/-/- ft from here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
Forest View 1.4 SEIL-CK-113
In a volunteer observer's own ground/0.7 mi away/610 ft/10 ft below here
precip, snowfall, snow depth
At a cooperative observer's station/3.6 mi away/617 ft/3 ft below here
snowfall, snow depth, precip, high, low
0in
Snow on the ground
Measured at Chicago Midway AP 3SW (MDWI2), 3.6 miles from here, read 14 Oct, 23:58. measured daily
23 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.