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Luis Munoz Marin International Airport, Puerto Rico

Large airport in Carolina Municipio, Puerto Rico

Air quality

The air at Luis Munoz Marin International Airport

Index 26, good, led by fine particles. Read at 10 PM from its reporting area, Catano (PR), 9 miles off.

26Good
  • Fine particles (PM2.5)26Good9.3 mi

The days ahead

Yesterday measured 46, good.

Airfield

Code
SJU
ICAO
TJSJ
IATA
SJU
Field elevation
9 ft
Serves
San Juan
Kind
Large airport
Scheduled service
Yes
Its own instrument
TJSJ
Wind now
From 120° at 3 mph, read 15 Oct, 23:56

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
08 / 2610,002 ft200 ftAsphalt67° / 247°2 mph head, on 082 mph from the right
10 / 288,016 ft150 ftConcrete90° / 270°3 mph head, on 101 mph from the right
082610282,500 ftN120° 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 San Juan (TJSJ), Luis Munoz Marin International Airport's own instrument, measure by measure, on the field's own clock.

Temperature

83 F at 11 PM Thursday; 89 F at its warmest, 11 AM Thursday, and 79 F at its coolest, 6 AM Thursday.

Now
83F
11 PM Thursday
Highest
89F
11 AM Thursday
Lowest
79F
6 AM Thursday
Temperature and Dew point at San Juan, temperature from 79.0 to 89.0, the latest 83.0; dew point from 75.0 to 77.0, the latest 76.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF758085903 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 76 F, the air 80% saturated; the humidity ran from 64% at 11 AM Thursday to 91% at 4 AM Thursday.

Dew point now
76F
11 PM Thursday
Humidity now
80%
Humidity, range
64 to 91%
Relative humidity at San Juan, relative humidity from 64 to 91, the latest 80, in per cent.RELATIVE HUMIDITY%607080901003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Wind

5 mph from the east southeast at 11 PM Thursday; at its strongest 16 mph, 2 PM Thursday, with a gust of 24 mph at 9 AM Thursday.

Now
5mph
from the east southeast
Strongest
16mph
2 PM Thursday
Highest gust
24mph
9 AM Thursday
Wind and Gust at San Juan, wind from 0 to 16, the latest 5; gust from 16 to 24, the latest 22, in miles an hour.WIND AND GUSTmph01020303 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16WINDGUST
Wind direction at San Juan, wind direction from 40 to 190, the latest 120, 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

29.97 inHg at 11 PM Thursday, steady over 3 hours; the same as a day before.

Now
29.97inHg
11 PM Thursday
3 hours
-0.01inHg
steady
24 hours
+0.00inHg
Pressure, altimeter at San Juan, pressure, altimeter from 29.92 to 30.02, the latest 29.97, in inches of mercury.PRESSURE, ALTIMETERinHg29.9029.9329.9529.9830.0030.023 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Visibility

10 miles or more every hour.

Now
10+mi
Lowest
10+mi
Hours under a mile
0
Visibility at San Juan, visibility from 10.0 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 2,000 ft at 6 AM Thursday; a base was reported in 23 of the hours.

Lowest base now
-
Lowest in 24 hours
2,000ft
6 AM Thursday
Hours with a base reported
23
Lowest cloud base at San Juan, lowest cloud base from 2,000 to 4,200, the latest 3,000, in feet.LOWEST CLOUD BASEft2,0003,0004,0005,0003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16MVFRVFR

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

Precipitation

0.09 in measured in the gauge, the most, 0.06 in, in the hour to 8 AM Thursday.

Last 24 hours
0.09in
Wettest hour
0.06in
8 AM Thursday
Hours with some
6
Precipitation at San Juan, precipitation from 0.00 to 0.06, the latest 0.00, in inches.PRECIPITATIONin0.000.030.050.070.103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

San Juan: 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 Luis Munoz Marin International Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.8 miles away.

measured now3 instruments

San JuanTJSJ

At an airfield/0.8 mi away/9 ft/level with here

temp, wind, gust, visibility, precip, pressure

Juncos 1SE - RAWSJCOP4

A remote fire weather station/15.9 mi away/295 ft/286 ft above here

temp, wind, gust, humidity, pressure

CorozalS2188

At a soil climate station/25.1 mi away/852 ft/843 ft above here

temp, humidity, soil temp, soil moisture

measured daily2 instruments

Carolina 1.7 NNWPR-CL-8

In a volunteer observer's own ground/0.9 mi away/16 ft/7 ft above here

precip, snowfall, snow depth

Levittown - Toa BajaLTBP4

At a cooperative observer's station/10.9 mi away/6 ft/3 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Near Luis Munoz Marin International Airport

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

Near Luis Munoz Marin International Airport