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Mineta San Jose International Airport, California

Large airport in Santa Clara County, California

Air quality

The air at Mineta San Jose International Airport

Index 55, moderate, led by fine particles. Read at 9 AM from its reporting area, San Jose (CA), 3 miles off.

55Moderate
  • Fine particles (PM2.5)55Moderate4.7 mi
  • Ozone23Good24 ppb9.6 mi
  • Nitrogen dioxide29Good31.7 ppb4.7 mi
  • Carbon monoxide-1.3 ppm4.7 mi

The days ahead

Highest 54, moderate, today, led by ozone. Yesterday measured 58, moderate.

Smoke, the next 45 hours

Little smoke near the ground through Sun 5 AM: the index from smoke stays at 11 or under.

FriSatSun

Precipitation

What has fallen at Mineta San Jose International Airport

None in the last 3 days, to Fri 8 AM. 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 Mineta San Jose International Airport, the next 45 hours

Visibility stays 10 miles or more through Sun 5 AM.

FriSatSun

Airfield

Code
SJC
ICAO
KSJC
IATA
SJC
Field elevation
62 ft
Serves
San Jose
Kind
Large airport
Scheduled service
Yes
Its own instrument
SJC
Wind now
From 130° at 6 mph, read 16 Oct, 08:53

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
12L / 30R11,000 ft150 ftConcrete139° / 319°6 mph head, on 12L1 mph from the left
12R / 30L11,000 ft150 ftConcrete139° / 319°6 mph head, on 12R1 mph from the left
12L30R12R30L2,500 ftN130° 6 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 Jose INTL A (SJC), Mineta San Jose International Airport's own instrument, measure by measure, on the field's own clock.

Temperature

63 F at 8 AM; 85 F at its warmest, 3 PM Thursday, and 57 F at its coolest, 5 AM.

Now
63F
8 AM
Highest
85F
3 PM Thursday
Lowest
57F
5 AM
Temperature and Dew point at San Jose INTL A, temperature from 57.0 to 85.0, the latest 63.0; dew point from 36.0 to 50.0, the latest 41.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF2040608010012 PM3 PM6 PM9 PMOct 163 AM6 AM9 AMFREEZINGTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 41 F, the air 44% saturated; the humidity ran from 18% at 3 PM Thursday to 55% at 4 AM.

Dew point now
41F
8 AM
Humidity now
44%
Humidity, range
18 to 55%
Relative humidity at San Jose INTL A, relative humidity from 18 to 55, the latest 44, in per cent.RELATIVE HUMIDITY%10203040506012 PM3 PM6 PM9 PMOct 163 AM6 AM9 AM

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

Wind

5 mph from the south southeast at 9 AM; at its strongest 9 mph, 5 PM Thursday, and no gust reported.

Now
5mph
from the south southeast
Strongest
9mph
5 PM Thursday
Highest gust
-
none reported
Wind at San Jose INTL A, wind from 0 to 9, the latest 5, in miles an hour.WINDmph02.557.51012 PM3 PM6 PM9 PMOct 163 AM6 AM9 AM
Wind direction at San Jose INTL A, wind direction from 10 to 360, the latest 150, in degrees.WIND DIRECTION°09018027036012 PM3 PM6 PM9 PMOct 163 AM6 AM9 AM

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

Pressure

30.09 inHg at 9 AM, steady over 3 hours; 0.05 inHg lower than a day before.

Now
30.09inHg
9 AM
3 hours
+0.01inHg
steady
24 hours
-0.05inHg
Pressure, altimeter at San Jose INTL A, pressure, altimeter from 30.03 to 30.14, the latest 30.09, in inches of mercury.PRESSURE, ALTIMETERinHg30.0030.0530.1030.1512 PM3 PM6 PM9 PMOct 163 AM6 AM9 AM

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 Jose INTL A, visibility from 10.0 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.51012 PM3 PM6 PM9 PMOct 163 AM6 AM9 AMLIFRIFRMVFRVFR

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

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 Jose INTL A: 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 Mineta San Jose International Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now3 instruments

San Jose INTL ASJC

At an airfield/0.3 mi away/56 ft/6 ft below here

temp, wind, gust, visibility, precip, pressure

San Jose RAWSRJSC1

A remote fire weather station/7.2 mi away/863 ft/801 ft above here

temp, wind, gust, humidity, pressure

I-580 - I-205CF133

Beside a road/32.7 mi away/301 ft/239 ft above here

temp, pavement temp, wind, visibility, precip

measured daily2 instruments

Santa Clara 1.6 NECA-SC-77

In a volunteer observer's own ground/1.9 mi away/22 ft/40 ft below here

precip, snowfall, snow depth

FremontFETC1

At a cooperative observer's station/13.3 mi away/39 ft/23 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in California

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

Near Mineta San Jose International Airport

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

Near Mineta San Jose International Airport