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Mackinac Island Airport, Michigan

Small airport in Michigan

Air quality

The air at Mackinac Island Airport

Index 16, good, led by ozone. Read at 11 PM from its reporting area, Eastern Upper Peninsula (MI), 58 miles off.

16Good
  • Fine particles (PM2.5)7Good-
  • Ozone16Good-

The days ahead

Good each day through Fri Oct 16, led by ozone. Yesterday measured 18, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Mackinac Island Airport

0.35 in in the last 24 hours, 0.68 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.35in
Last 3 days
0.68in

Visibility

How far you can see at Mackinac Island Airport, the next 46 hours

Mist or haze: visibility falls to 3 miles Fri 1 AM.

FriSat

Airfield

Code
MCD
ICAO
KMCD
IATA
MCD
Field elevation
739 ft
Serves
Mackinac Island
Kind
Small airport
Scheduled service
No
Its own instrument
MCD
Wind now
From 90° at 17 mph, read 15 Oct, 23:15

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
08 / 263,501 ft75 ftAsphalt75° / 255°16 mph head, on 084 mph from the right
08261,000 ftN90° 17 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 Mackinac Island (MCD), Mackinac Island Airport's own instrument, measure by measure, on the field's own clock.

Temperature

46 F at 11 PM; 50 F at its warmest, 10 AM, and 44 F at its coolest, 1 AM.

Now
46F
11 PM
Highest
50F
10 AM
Lowest
44F
1 AM
Temperature and Dew point at Mackinac Island, temperature from 44.0 to 50.0, the latest 46.4; dew point from 39.2 to 46.4, the latest 46.4, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF35404550Oct 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 46 F, the air 100% saturated; the humidity ran from 70% at 10 AM to 100% at 11 PM.

Dew point now
46F
11 PM
Humidity now
100%
Humidity, range
70 to 100%
Relative humidity at Mackinac Island, relative humidity from 70 to 100, the latest 100, in per cent.RELATIVE HUMIDITY%60708090100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Wind

17 mph from the east at 11 PM; at its strongest 17 mph, 11 PM, with a gust of 28 mph at 3 PM.

Now
17mph
from the east
Strongest
17mph
11 PM
Highest gust
28mph
3 PM
Wind and Gust at Mackinac Island, wind from 5 to 17, the latest 17; gust from 16 to 28, the latest 24, in miles an hour.WIND AND GUSTmph0102030Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMWINDGUST
Wind direction at Mackinac Island, wind direction from 10 to 130, the latest 90, 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

29.78 inHg at 11 PM, falling 0.12 inHg over 3 hours; 0.48 inHg lower than a day before.

Now
29.78inHg
11 PM
3 hours
-0.12inHg
falling
24 hours
-0.48inHg
Pressure, altimeter at Mackinac Island, pressure, altimeter from 29.78 to 30.28, the latest 29.78, in inches of mercury.PRESSURE, ALTIMETERinHg29.6029.8030.0030.2030.40Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Visibility

Down to 3 miles at 9 PM; 8 miles now.

Now
8mi
Lowest
3mi
9 PM
Hours under a mile
0
Visibility at Mackinac Island, visibility from 3.0 to 10.0, the latest 8.0, 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 300 ft at 9 PM; a base was reported in 24 of the hours.

Lowest base now
300ft
Lowest in 24 hours
300ft
9 PM
Hours with a base reported
24
Lowest cloud base at Mackinac Island, lowest cloud base from 300 to 4,100, the latest 300, in feet.LOWEST CLOUD BASEft01,0002,0003,0004,0005,000Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMLIFRIFRMVFRVFR

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

Precipitation

0.25 in measured in the gauge, the most, 0.08 in, in the hour to 10 PM.

Last 24 hours
0.25in
Wettest hour
0.08in
10 PM
Hours with some
5
Precipitation at Mackinac Island, precipitation from 0.00 to 0.08, the latest 0.00, in inches.PRECIPITATIONin0.000.030.050.070.10Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Mackinac Island: 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 Mackinac Island 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

Mackinac IslandMCD

At an airfield/0.0 mi away/741 ft/2 ft above here

temp, wind, gust, visibility, precip, pressure

St. IgnaceMC012

Beside a road/5.6 mi away/603 ft/136 ft below here

temp, pavement temp, wind, visibility, precip

Rudyard RAWSRYDM4

A remote fire weather station/26.7 mi away/692 ft/47 ft below here

temp, wind, gust, humidity, pressure

measured daily2 instruments

St. Ignace 0.6 WSWMI-MC-5

In a volunteer observer's own ground/4.7 mi away/701 ft/38 ft below here

precip, snowfall, snow depth

CheboyganCHBM4

At a cooperative observer's station/16.7 mi away/577 ft/162 ft below here

snowfall, snow depth, precip, high, low

0in

Snow on the ground

Measured at Cheboygan (CHBM4), 16.7 miles from here, read 8 Oct, 08:00. measured daily

Elsewhere in Michigan

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

Near Mackinac Island Airport

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

Near Mackinac Island Airport