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Merrill Municipal Airport, Wisconsin

Small airport in Lincoln County, Wisconsin

Air quality

The air at Merrill Municipal Airport

Index 15, good, led by ozone. Read at 10 PM from its reporting area, Central Waters North (WI), 38 miles off.

15Good
  • Fine particles (PM2.5)4Good-
  • Ozone15Good-

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 19, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Merrill Municipal Airport

0.70 in in the last 24 hours, 0.74 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.70in
Last 3 days
0.74in

Visibility

How far you can see at Merrill Municipal Airport, the next 45 hours

Visibility stays 3 miles or more through Sat 7 PM, lowest 4 miles Thu 11 PM.

FriSat

Airfield

Code
RRL
ICAO
KRRL
IATA
RRL
Field elevation
1,318 ft
Serves
Merrill
Kind
Small airport
Scheduled service
No
Its own instrument
RRL
Wind now
From 320° at 3 mph, read 15 Oct, 23:15

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
07 / 255,101 ft75 ftAsphalt68° / 248°1 mph head, on 253 mph from the right
16 / 342,997 ft75 ftAsphalt157° / 337°3 mph head, on 341 mph from the left
072516342,000 ftN320° 3 mph
Runways from their surveyed ends, north up, lengths and positions to scale; the rose in the corner is the wind now.

Measured here

What the airfield's own instrument measured, the last 24 hours

Every hour from Merrill (RRL), Merrill Municipal Airport's own instrument, measure by measure, on the field's own clock.

Temperature

47 F at 10 PM; 50 F at its warmest, 2 AM, and 47 F at its coolest, 10 PM.

Now
47F
10 PM
Highest
50F
2 AM
Lowest
47F
10 PM
Temperature and Dew point at Merrill, temperature from 47.2 to 50.3, the latest 47.2; dew point from 41.2 to 48.2, the latest 46.7, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF4042.54547.55052.5Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMTEMPERATUREDEW POINT

How it is measured: Stevenson screen and siting, Field Book FB-INS-009

Humidity and dew point

A dew point of 47 F, the air 98% saturated; the humidity ran from 75% at 12 AM to 99% at 3 PM.

Dew point now
47F
10 PM
Humidity now
98%
Humidity, range
75 to 99%
Relative humidity at Merrill, relative humidity from 75 to 99, the latest 98, in per cent.RELATIVE HUMIDITY%708090100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

How it is measured: Humidity variables, Field Book FB-WAT-002

Wind

3 mph from the northwest at 10 PM; at its strongest 7 mph, 5 AM, and no gust reported.

Now
3mph
from the northwest
Strongest
7mph
5 AM
Highest gust
-
none reported
Wind at Merrill, wind from 0 to 7, the latest 3, in miles an hour.WINDmph02468Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM
Wind direction at Merrill, wind direction from 70 to 320, the latest 310, in degrees.WIND DIRECTION°090180270360Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

How it is measured: Coriolis as geometry, Field Book FB-ENG-008

Pressure

29.83 inHg at 10 PM, falling 0.02 inHg over 3 hours; 0.37 inHg lower than a day before.

Now
29.83inHg
10 PM
3 hours
-0.02inHg
falling
24 hours
-0.37inHg
Pressure, altimeter at Merrill, pressure, altimeter from 29.83 to 30.20, the latest 29.83, in inches of mercury.PRESSURE, ALTIMETERinHg29.8029.9030.0030.1030.20Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

How it is measured: Hydrostatic balance, Field Book FB-ENG-003

Visibility

Down to 4 miles at 4 PM; 7 miles now.

Now
7mi
Lowest
4mi
4 PM
Hours under a mile
0
Visibility at Merrill, visibility from 4.0 to 10.0, the latest 7.0, in miles.VISIBILITYmi02.557.510Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMLIFRIFRMVFRVFR

How it is measured: Fog types, Field Book FB-WAT-020

Cloud base

The lowest cloud base came down to 500 ft at 6 PM; a base was reported in 23 of the hours.

Lowest base now
-
Lowest in 24 hours
500ft
6 PM
Hours with a base reported
23
Lowest cloud base at Merrill, lowest cloud base from 500 to 3,300, the latest 700, in feet.LOWEST CLOUD BASEft01,0002,0003,0004,000Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMLIFRIFRMVFRVFR

How it is measured: Cloud classification, Field Book FB-SKY-001

Precipitation

0.79 in measured in the gauge, the most, 0.12 in, in the hour to 4 PM.

Last 24 hours
0.79in
Wettest hour
0.12in
4 PM
Hours with some
11
Precipitation at Merrill, precipitation from 0.00 to 0.12, the latest 0.05, in inches.PRECIPITATIONin0.000.050.100.15Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

How it is measured: ASOS, Field Book FB-INS-002

Merrill: every reading, the last 7 days, 30 days and the year, and how well it reports

What is measuring near here

The 5 instruments nearest Merrill Municipal 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

MerrillRRL

At an airfield/0.0 mi away/1,316 ft/2 ft below here

temp, wind, gust, visibility, precip, pressure

I-39 NB at CTH N - WausauWUSW3

Beside a road/20.1 mi away/1,198 ft/120 ft below here

temp, pavement temp, wind, visibility, precip

Antigo 2NEAGOW3

At a river or reservoir gauge/29.3 mi away/1,506 ft/188 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Merrill 1.3 ENEWI-LN-12

In a volunteer observer's own ground/1.8 mi away/1,300 ft/18 ft below here

precip, snowfall, snow depth

MerrillRRLW3

At a cooperative observer's station/2.9 mi away/1,243 ft/75 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Wisconsin

19 places, each with its own forecast and its own instruments.

Near Merrill Municipal Airport

The nearest places, each with its own forecast and the instruments nearest it.

Near Merrill Municipal Airport