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Keystone Heights Airport, Florida

Small airport in Florida

Air quality

The air at Keystone Heights Airport

Index 8, good, led by coarse particles. Read at 11 PM from its reporting area, Putnam County (FL), 24 miles off.

8Good
  • Coarse particles (PM10)8Good-

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 19, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Keystone Heights Airport

None in the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Keystone Heights Airport, the next 45 hours

Visibility stays 7 miles or more through Sat 8 PM, lowest 8 miles Fri 5 AM.

FriSat

Airfield

Code
42J
ICAO
-
IATA
-
Field elevation
196 ft
Serves
Keystone Heights
Kind
Small airport
Scheduled service
No
Its own instrument
42J
Wind now
From 100° at 5 mph, read 15 Oct, 23:55

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
05 / 235,044 ft100 ftAsphalt45° / 225°3 mph head, on 054 mph from the right
11 / 294,899 ft75 ftAsphalt105° / 285°5 mph head, on 11None
052311292,000 ftN100° 5 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 Keystone Heights (42J), Keystone Heights Airport's own instrument, measure by measure, on the field's own clock.

Temperature

72 F at 12 AM; 90 F at its warmest, 3 PM Thursday, and 66 F at its coolest, 7 AM Thursday.

Now
72F
12 AM
Highest
90F
3 PM Thursday
Lowest
66F
7 AM Thursday
Temperature and Dew point at Keystone Heights, temperature from 66.2 to 89.6, the latest 71.6; dew point from 64.4 to 73.4, the latest 69.8, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF607080903 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16TEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 70 F, the air 94% saturated; the humidity ran from 43% at 3 PM Thursday to 100% at 1 AM Thursday.

Dew point now
70F
12 AM
Humidity now
94%
Humidity, range
43 to 100%
Relative humidity at Keystone Heights, relative humidity from 43 to 100, the latest 94, in per cent.RELATIVE HUMIDITY%4060801003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Wind

Calm at 12 AM; at its strongest 8 mph, 7 PM Thursday, with a gust of 14 mph at 3 PM Thursday.

Now
0mph
calm
Strongest
8mph
7 PM Thursday
Highest gust
14mph
3 PM Thursday
Wind and Gust at Keystone Heights, wind from 0 to 8, the latest 0; gust from 12 to 14, the latest 14, in miles an hour.WIND AND GUSTmph0510153 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16WINDGUST
Wind direction at Keystone Heights, wind direction from 50 to 190, the latest 100, in degrees.WIND DIRECTION°0901802703603 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Pressure

30.08 inHg at 12 AM, steady over 3 hours; 0.01 inHg lower than a day before.

Now
30.08inHg
12 AM
3 hours
-0.01inHg
steady
24 hours
-0.01inHg
Pressure, altimeter at Keystone Heights, pressure, altimeter from 30.05 to 30.14, the latest 30.08, in inches of mercury.PRESSURE, ALTIMETERinHg30.0530.0730.1030.1330.153 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Visibility

Down to 0.3 miles at 4 AM Thursday, under a mile for 1 hour; 10 miles or more now.

Now
10+mi
Lowest
0.3mi
4 AM Thursday
Hours under a mile
1
Visibility at Keystone Heights, visibility from 0.3 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.5103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16LIFRIFRMVFRVFR

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

Cloud base

The lowest cloud base came down to 0 ft at 4 AM Thursday; a base was reported in 11 of the hours.

Lowest base now
5,000ft
Lowest in 24 hours
0ft
4 AM Thursday
Hours with a base reported
11
Lowest cloud base at Keystone Heights, lowest cloud base from 0 to 6,000, the latest 5,000, in feet.LOWEST CLOUD BASEft02,0004,0006,0003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16MVFRVFR

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

Precipitation

None measured in the gauge in the last 24 hours.

Last 24 hours
0.00in
Wettest hour
-
Hours with some
0

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

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

What is measuring near here

The 4 instruments nearest Keystone Heights 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 now2 instruments

Keystone Heights42J

At an airfield/0.0 mi away/197 ft/1 ft above here

temp, wind, gust, visibility, precip, pressure

Olustee RAWSOLSF1

A remote fire weather station/35.9 mi away/128 ft/68 ft below here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Keystone Heights 1.2 NEFL-CY-45

In a volunteer observer's own ground/4.0 mi away/149 ft/47 ft below here

precip, snowfall, snow depth

Glen St Mary 1WGSMF1

At a cooperative observer's station/30.6 mi away/92 ft/104 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Florida

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

Near Keystone Heights Airport

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

Near Keystone Heights Airport