Alert. A Freeze Watch is in force for Waterloo Regional Airport until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Waterloo Regional Airport is 47° and clear at 12 AM. With the wind it feels like 40°. The dew point is 40°, so the air feels dry and comfortable. Moderate breeze from the west-northwest at 15 mph.
Today and tonight. It warms to about 51° by 3 PM. Tonight falls to about 32° by 7 AM, under a mostly clear sky. A freeze: protect plants and pipes.
The week. The warmest day ahead is Thursday, near 74°, and the coolest tomorrow, near 58°. The days ahead look dry. The first freeze could come tomorrow, a low of 31°.
The sky tonight. The sun sets at 6:26 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:15 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 3 minutes long, 3 minutes shorter than yesterday.
As of 12:00 AM in Waterloo Regional Airport, Iowa.
Air quality
Index 43, good, led by fine particles. Read at 11 PM from its reporting area, Waterloo (IA), 4 miles off.
Good each day through Today, led by ozone. Yesterday measured 31, good.
No smoke near the ground through Sat 7 PM.
Precipitation
1.35 in in the last 24 hours, 1.45 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 7 miles or more through Sat 7 PM, lowest 8 miles Sat 4 AM.
F
Now, today, and the week
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 12 / 30 | 8,399 ft | 150 ft | Asphalt | 128° / 308° | 17 mph head, on 30 | 2 mph from the left |
| 18 / 36 | 6,003 ft | 150 ft | Asphalt | 188° / 8° | 6 mph head, on 36 | 16 mph from the left |
Measured here
Every hour from Waterloo (ALO), Waterloo Regional Airport's own instrument, measure by measure, on the field's own clock.
50 F at 10 PM Thursday; 57 F at its warmest, 4 AM Thursday, and 50 F at its coolest, 6 PM Thursday.
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
A dew point of 45 F, the air 81% saturated; the humidity ran from 81% at 10 PM Thursday to 100% at 10 AM Thursday.
How it is measured: Humidity variables, Field Book FB-WAT-002
17 mph from the northwest at 10 PM Thursday; at its strongest 19 mph, 5 PM Thursday, with a gust of 32 mph at 5 PM Thursday.
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
30.04 inHg at 10 PM Thursday, rising 0.04 inHg over 3 hours; 0.06 inHg lower than a day before.
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Down to 1 miles at 1 PM Thursday; 10 miles or more now.
How it is measured: Fog types, Field Book FB-WAT-020
The lowest cloud base came down to 400 ft at 12 PM Thursday; a base was reported in 22 of the hours.
How it is measured: Cloud classification, Field Book FB-SKY-001
1.39 in measured in the gauge, the most, 0.28 in, in the hour to 9 AM Thursday.
How it is measured: ASOS, Field Book FB-INS-002
Waterloo: every reading, the last 7 days, 30 days and the year, and how well it reports
The 4 instruments nearest Waterloo Regional Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.
measured now2 instruments
WaterlooALO
At an airfield/0.2 mi away/879 ft/6 ft above here
temp, wind, gust, visibility, precip, pressure
Waterloo (US 20)RWLI4
Beside a road/8.4 mi away/883 ft/10 ft above here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
Waterloo AirportALXI4
At an airfield/2.2 mi away/863 ft/10 ft below here
snowfall, snow depth, precip, high, low
Cedar Falls 1.1 EIA-BH-2
In a volunteer observer's own ground/3.1 mi away/922 ft/49 ft above here
precip, snowfall, snow depth
0in
Snow on the ground
Measured at Waterloo Airport (ALXI4), 2.2 miles from here, read 14 Oct, 23:59. measured daily
15 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.