Temperature
45 F at 12 AM; 56 F at its warmest, 11 AM Thursday, and 45 F at its coolest, 12 AM.
- Now
- 45F
- 12 AM
- Highest
- 56F
- 11 AM Thursday
- Lowest
- 45F
- 12 AM
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Alert. A Freeze Watch is in force for Perry Municipal Airport until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Perry Municipal Airport is 45° and mostly clear at 1 AM. With the wind it feels like 39°. The dew point is 42°, so the air feels dry and comfortable. Moderate breeze from the west-northwest at 13 mph.
Today and tonight. It warms to about 50° by 3 PM. Tonight falls to about 31° by 6 AM, under a mostly clear sky. A freeze: protect plants and pipes. No rain is expected for the rest of the day.
The week. The warmest day ahead is Wednesday, near 76°, and the coolest tomorrow, near 59°. The days ahead look dry. The first freeze could come tomorrow, a low of 30°.
The sky tonight. The sun sets at 6:34 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:25 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 5 minutes long, 2 minutes shorter than yesterday.
As of 1:00 AM in Perry Municipal Airport, Iowa.
Air quality
Index 16, good, led by ozone. Read at 12 AM from its reporting area, Des Moines (IA), 33 miles off.
Good each day through Sat Oct 17, led by fine particles. Yesterday measured 20, good.
No smoke near the ground through Sat 7 PM.
Precipitation
0.92 in in the last 24 hours, and none in the 2 days before, 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 Sat 3 AM.
F
Now, today, and the week
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 04 / 22 unlit | 2,321 ft | 240 ft | Grass | 52° / 232° | 7 mph head, on 22 | 12 mph from the right |
| 14 / 32 | 5,500 ft | 100 ft | Concrete | 141° / 321° | 12 mph head, on 32 | 7 mph from the left |
Measured here
Every hour from Perry (PRO), Perry Municipal Airport's own instrument, measure by measure, on the field's own clock.
45 F at 12 AM; 56 F at its warmest, 11 AM Thursday, and 45 F at its coolest, 12 AM.
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
A dew point of 42 F, the air 88% saturated; the humidity ran from 82% at 10 PM Thursday to 100% at 5 AM Thursday.
How it is measured: Humidity variables, Field Book FB-WAT-002
13 mph from the west northwest at 12 AM; at its strongest 21 mph, 9 PM Thursday, with a gust of 35 mph at 8 PM Thursday.
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
30.17 inHg at 12 AM, rising 0.04 inHg over 3 hours; 0.11 inHg higher than a day before.
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Down to 1 mile at 2 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 200 ft at 7 AM Thursday; a base was reported in 22 of the hours.
How it is measured: Cloud classification, Field Book FB-SKY-001
1.08 in measured in the gauge, the most, 0.25 in, in the hour to 11 AM Thursday.
How it is measured: ASOS, Field Book FB-INS-002
Perry: every reading, the last 7 days, 30 days and the year, and how well it reports
The 6 instruments nearest Perry Municipal Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.
measured now4 instruments
PerryPRO
At an airfield/0.3 mi away/1,004 ft/9 ft below here
temp, wind, gust, visibility, precip, pressure
Jefferson (IA 4)RJFI4
Beside a road/19.1 mi away/1,017 ft/4 ft above here
temp, pavement temp, wind, visibility, precip
Ames ScanAMMI4
At a river or reservoir gauge/25.5 mi away/1,073 ft/60 ft above here
temp, wind, gust, humidity, pressure
AmesS2031
At a soil climate station/25.6 mi away/1,073 ft/60 ft above here
temp, humidity, soil temp, soil moisture
measured daily2 instruments
PerryPERI4
At a cooperative observer's station/2.6 mi away/935 ft/78 ft below here
snowfall, snow depth, precip, high, low
Perry 0.4 SSWIA-DL-42
In a volunteer observer's own ground/3.1 mi away/962 ft/51 ft below here
precip, snowfall, snow depth
-
Snow on the ground
15 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.