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Calaveras Co Maury Rasmussen Field, California

Small airport in Calaveras County, California

Air quality

The air at Calaveras Co Maury Rasmussen Field

Index 40, good, led by ozone. Read at 10 PM from its reporting area, Calaveras County (CA), 4 miles off.

40Good
  • Fine particles (PM2.5)16Good3.9 mi
  • Ozone40Good40 ppb3.9 mi
  • Coarse particles (PM10)28Good3.9 mi

The days ahead

Yesterday measured 42, good.

Smoke, the next 43 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Calaveras Co Maury Rasmussen Field

None in the last 3 days, to Thu 10 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 Calaveras Co Maury Rasmussen Field, the next 43 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat

Airfield

Code
CPU
ICAO
KCPU
IATA
-
Field elevation
1,325 ft
Serves
San Andreas
Kind
Small airport
Scheduled service
No
Its own instrument
CPU
Wind now
Calm, read 15 Oct, 22:55

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
13 / 313,602 ft60 ftAsphalt146° / 326°CalmCalm
13311,000 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 Andreas (CPU), Calaveras Co Maury Rasmussen Field's own instrument, measure by measure, on the field's own clock.

Temperature

67 F at 8 PM; 82 F at its warmest, 3 PM, and 50 F at its coolest, 6 AM.

Now
67F
8 PM
Highest
82F
3 PM
Lowest
50F
6 AM
Temperature and Dew point at San Andreas, temperature from 50.0 to 82.2, the latest 66.8; dew point from 30.0 to 32.7, the latest 32.3, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF20406080100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMFREEZINGTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 32 F, the air 28% saturated; the humidity ran from 15% at 3 PM to 47% at 6 AM.

Dew point now
32F
8 PM
Humidity now
28%
Humidity, range
15 to 47%
Relative humidity at San Andreas, relative humidity from 15 to 47, the latest 28, in per cent.RELATIVE HUMIDITY%1020304050Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Wind

2 mph from the south at 8 PM; at its strongest 8 mph, 5 PM, and no gust reported.

Now
2mph
from the south
Strongest
8mph
5 PM
Highest gust
-
none reported
Wind at San Andreas, wind from 0 to 8, the latest 2, in miles an hour.WINDmph02.557.510Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM
Wind direction at San Andreas, wind direction from 10 to 360, the latest 170, 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

30.11 inHg at 8 PM, steady over 3 hours; 0.05 inHg lower than a day before.

Now
30.11inHg
8 PM
3 hours
+0.01inHg
steady
24 hours
-0.05inHg
Pressure, altimeter at San Andreas, pressure, altimeter from 30.10 to 30.20, the latest 30.11, in inches of mercury.PRESSURE, ALTIMETERinHg30.1030.1330.1530.1830.20Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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 Andreas, visibility from 10.0 to 10.0, the latest 10.0, in miles.VISIBILITYmi02.557.510Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMLIFRIFRMVFRVFR

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

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 Andreas: 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 Calaveras Co Maury Rasmussen Field, 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 AndreasCPU

At an airfield/0.0 mi away/1,329 ft/4 ft above here

temp, wind, gust, visibility, precip, pressure

New Hogan Weather StationNHWC1

At a river or reservoir gauge/9.2 mi away/581 ft/744 ft below here

temp, wind, gust, humidity, pressure

measured daily2 instruments

San Andreas 1.1 ENECA-CV-3

In a volunteer observer's own ground/3.6 mi away/1,317 ft/8 ft below here

precip, snowfall, snow depth

San AndreasADSC1

At a cooperative observer's station/4.1 mi away/1,030 ft/295 ft below here

snowfall, snow depth, precip, high, low

0in

Snow on the ground

Measured at San Andreas (ADSC1), 4.1 miles from here, read 15 Oct, 07:00. measured daily

Elsewhere in California

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

Near Calaveras Co Maury Rasmussen Field

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

Near Calaveras Co Maury Rasmussen Field