Temperature
57 F at 12 AM; 66 F at its warmest, 2 PM Thursday, and 57 F at its coolest, 12 AM.
- Now
- 57F
- 12 AM
- Highest
- 66F
- 2 PM Thursday
- Lowest
- 57F
- 12 AM
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Now. Lewis University Airport is 57° and light rain at 1 AM. The dew point is 55°, so the air feels a little humid. Moderate breeze from the west-northwest at 14 mph, gusting to 29 mph.
Today and tonight. The warmest of the day has passed; it cools to about 49° by 8 PM. Tonight falls to about 37° by 7 AM, under a mostly clear sky. No rain is expected for the rest of the day.
The week. The warmest day ahead is Thursday, near 73°, and the coolest tomorrow, near 57°. The days ahead look dry.
The sky tonight. The sun sets at 6:10 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:01 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. 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. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 6 minutes long, 2 minutes shorter than yesterday.
As of 1:00 AM in Lewis University Airport, Illinois.
Air quality
Index 20, good, led by fine particles. Read at 12 AM from its reporting area, South and West Suburbs (Chicago) (IL), 14 miles off.
Good each day through Mon Oct 19, led by fine particles. Yesterday measured 48, good.
No smoke near the ground through Sat 7 PM.
Precipitation
0.39 in in the last 24 hours, 0.53 in over the last 3 days, to Fri 12 AM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Fri 11 AM.
F
Now, today, and the week
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 02 / 20 | 6,500 ft | 100 ft | Concrete | 14° / 194° | 1 mph head, on 20 | 13 mph from the right |
| 09 / 27 | 5,500 ft | 75 ft | Asphalt | 90° / 270° | 13 mph head, on 27 | 2 mph from the right |
Measured here
Every hour from Romeoville/Chi (LOT), Lewis University Airport's own instrument, measure by measure, on the field's own clock.
57 F at 12 AM; 66 F at its warmest, 2 PM Thursday, and 57 F at its coolest, 12 AM.
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
A dew point of 56 F, the air 96% saturated; the humidity ran from 82% at 2 AM Thursday to 100% at 5 PM Thursday.
How it is measured: Humidity variables, Field Book FB-WAT-002
16 mph from the west at 12 AM; at its strongest 16 mph, 12 AM, with a gust of 29 mph at 12 AM.
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
29.87 inHg at 12 AM, rising 0.08 inHg over 3 hours; 0.29 inHg lower than a day before.
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Down to 0.3 miles at 4 PM Thursday, under a mile for 1 hour; 10 miles or more now.
How it is measured: Fog types, Field Book FB-WAT-020
The lowest cloud base came down to 200 ft at 4 PM Thursday; a base was reported in 22 of the hours.
How it is measured: Cloud classification, Field Book FB-SKY-001
0.01 in measured in the gauge, the most, 0.01 in, in the hour to 10 PM Thursday.
How it is measured: ASOS, Field Book FB-INS-002
Romeoville/Chi: every reading, the last 7 days, 30 days and the year, and how well it reports
The 5 instruments nearest Lewis University Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.
measured now3 instruments
At an airfield/0.1 mi away/673 ft/6 ft below here
temp, wind, gust, visibility, precip, pressure
Romeoville - Chicago SanitaryROMI2
At a river or reservoir gauge/3.0 mi away/583 ft/96 ft below here
temp, wind, gust, humidity, pressure
US-34 @ Fox River BridgeSS1924
Beside a road/14.4 mi away/-/- ft from here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
Romeoville WFOLOTI2
At a cooperative observer's station/0.6 mi away/659 ft/20 ft below here
snowfall, snow depth, precip, high, low
Romeoville 0.7 SWIL-WL-9
In a volunteer observer's own ground/2.2 mi away/669 ft/10 ft below here
precip, snowfall, snow depth
0in
Snow on the ground
Measured at Romeoville WFO (LOTI2), 0.6 miles from here, read 15 Oct, 18:54. 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.