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Robertson Field, Connecticut

Small airport in Hartford County, Connecticut

Air quality

The air at Robertson Field

Index 29, good, led by fine particles. Read at 1 AM from its reporting area, Waterbury (CT), 13 miles off.

29Good
  • Fine particles (PM2.5)29Good10.9 mi
  • Ozone-6 ppb13.6 mi
  • Coarse particles (PM10)12Good10.9 mi
  • Nitrogen dioxide13Good14.6 ppb10.9 mi
  • Sulfur dioxide0Good0 ppb24.9 mi
  • Carbon monoxide-0.3 ppm10.9 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 15, good.

Smoke, the next 43 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Robertson Field

None in the last 3 days, to Fri 1 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 Robertson Field, the next 43 hours

Visibility stays 3 miles or more through Sat 8 PM, lowest 3 miles Fri 9 AM.

FriSat

Airfield

Code
4B8
ICAO
-
IATA
-
Field elevation
200 ft
Serves
Plainville
Kind
Small airport
Scheduled service
No
Its own instrument
4B8
Wind now
Calm, read 16 Oct, 00:55

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
02 / 203,666 ft75 ftAsphalt19° / 199°CalmCalm
02201,000 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 Plainville (4B8), Robertson Field's own instrument, measure by measure, on the field's own clock.

Temperature

48 F at 12 AM; 64 F at its warmest, 4 PM Thursday, and 47 F at its coolest, 10 PM Thursday.

Now
48F
12 AM
Highest
64F
4 PM Thursday
Lowest
47F
10 PM Thursday
Temperature and Dew point at Plainville, temperature from 46.9 to 64.0, the latest 47.5; dew point from 32.4 to 48.2, the latest 46.1, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF30405060703 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16FREEZINGTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 46 F, the air 95% saturated; the humidity ran from 31% at 2 PM Thursday to 96% at 11 PM Thursday.

Dew point now
46F
12 AM
Humidity now
95%
Humidity, range
31 to 96%
Relative humidity at Plainville, relative humidity from 31 to 96, the latest 95, in per cent.RELATIVE HUMIDITY%204060801003 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 12 mph, 10 AM Thursday, with a gust of 18 mph at 9 AM Thursday.

Now
0mph
calm
Strongest
12mph
10 AM Thursday
Highest gust
18mph
9 AM Thursday
Wind at Plainville, wind from 0 to 12, the latest 0, in miles an hour.WINDmph0510153 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Wind direction at Plainville, wind direction from 10 to 360, the latest 310, 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

30.12 inHg at 12 AM, falling 0.05 inHg over 3 hours; 0.05 inHg higher than a day before.

Now
30.12inHg
12 AM
3 hours
-0.05inHg
falling
24 hours
+0.05inHg
Pressure, altimeter at Plainville, pressure, altimeter from 30.07 to 30.23, the latest 30.12, in inches of mercury.PRESSURE, ALTIMETERinHg30.0530.1030.1530.2030.253 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 Plainville, 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 2,900 ft at 5 AM Thursday; a base was reported in 9 of the hours.

Lowest base now
-
Lowest in 24 hours
2,900ft
5 AM Thursday
Hours with a base reported
9
Lowest cloud base at Plainville, lowest cloud base from 2,900 to 26,000, the latest 12,000, in feet.LOWEST CLOUD BASEft010,00020,00030,0003 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

Plainville: 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 Robertson Field, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now3 instruments

Plainville4B8

At an airfield/0.1 mi away/200 ft/level with here

temp, wind, gust, visibility, precip, pressure

Thomaston Rsvr DamTMSC3

At a dam/10.2 mi away/423 ft/223 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Farmington 4.9 WSWCT-HR-41

In a volunteer observer's own ground/0.8 mi away/258 ft/58 ft above here

precip, snowfall, snow depth

New Britian - Shuttle MeadowNWBC3

At a cooperative observer's station/3.7 mi away/364 ft/164 ft above here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Connecticut

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

Near Robertson Field

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

Near Robertson Field