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Fernando Luis Ribas Dominicci Airport, Puerto Rico

Medium airport in San Juan Municipio, Puerto Rico

Air quality

The air at Fernando Luis Ribas Dominicci Airport

Index 26, good, led by fine particles. Read at 10 PM from its reporting area, Catano (PR), 3 miles off.

26Good
  • Fine particles (PM2.5)26Good3.5 mi

The days ahead

Yesterday measured 46, good.

Airfield

Code
SIG
ICAO
TJIG
IATA
SIG
Field elevation
10 ft
Serves
San Juan
Kind
Medium airport
Scheduled service
Yes
Its own instrument
TJIG
Wind now
-

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
09 / 275,317 ft100 ftAsphalt83° / 263°--
09272,000 ftN
Runways from their surveyed ends, north up, lengths and positions to scale.

Measured here

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

Every hour from San Juan (TJIG), Fernando Luis Ribas Dominicci Airport's own instrument, measure by measure, on the field's own clock.

Temperature

84 F at 6 PM Thursday; 88 F at its warmest, 10 AM Thursday, and 81 F at its coolest, 6 AM Thursday.

Now
84F
6 PM Thursday
Highest
88F
10 AM Thursday
Lowest
81F
6 AM Thursday
Temperature and Dew point at San Juan, temperature from 80.6 to 87.8, the latest 84.2; dew point from 75.2 to 77.0, the latest 75.2, 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 75 F, the air 75% saturated; the humidity ran from 66% at 1 PM Thursday to 84% at 6 AM Thursday.

Dew point now
75F
6 PM Thursday
Humidity now
75%
Humidity, range
66 to 84%
Relative humidity at San Juan, relative humidity from 66 to 84, the latest 75, in per cent.RELATIVE HUMIDITY%65707580853 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Wind

12 mph from the east at 6 PM Thursday; at its strongest 15 mph, 1 PM Thursday, with a gust of 16 mph at 6 AM Thursday.

Now
12mph
from the east
Strongest
15mph
1 PM Thursday
Highest gust
16mph
6 AM Thursday
Wind at San Juan, wind from 3 to 15, the latest 12, in miles an hour.WINDmph0510153 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Wind direction at San Juan, wind direction from 80 to 150, 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

29.94 inHg at 6 PM Thursday, rising 0.03 inHg over 3 hours; 0.04 inHg lower than a day before.

Now
29.94inHg
6 PM Thursday
3 hours
+0.03inHg
rising
24 hours
-0.04inHg
Pressure, altimeter at San Juan, pressure, altimeter from 29.91 to 30.02, the latest 29.94, in inches of mercury.PRESSURE, ALTIMETERinHg29.9029.9530.0030.053 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 3,000 ft at 6 AM Thursday; a base was reported in 13 of the hours.

Lowest base now
-
Lowest in 24 hours
3,000ft
6 AM Thursday
Hours with a base reported
13
Lowest cloud base at San Juan, lowest cloud base from 3,000 to 3,500, the latest 3,500, in feet.LOWEST CLOUD BASEft3,0003,2003,4003,6003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16VFR

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

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 Fernando Luis Ribas Dominicci 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

San JuanTJIG

At an airfield/0.0 mi away/9 ft/1 ft below here

temp, wind, gust, visibility, precip, pressure

CorozalS2188

At a soil climate station/19.8 mi away/852 ft/842 ft above here

temp, humidity, soil temp, soil moisture

Juncos 1SE - RAWSJCOP4

A remote fire weather station/20.0 mi away/295 ft/285 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

San Juan 5.1 NWPR-SJ-20

In a volunteer observer's own ground/1.1 mi away/82 ft/72 ft above here

precip, snowfall, snow depth

Levittown - Toa BajaLTBP4

At a cooperative observer's station/4.8 mi away/6 ft/4 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Near Fernando Luis Ribas Dominicci Airport

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

Near Fernando Luis Ribas Dominicci Airport