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Gary/Chicago International Airport, Indiana

Medium airport in Lake County, Indiana

Air quality

The air at Gary/Chicago International Airport

Index 38, good, led by fine particles. Read at 11 PM from its reporting area, Hammond-Gary (IN), 4 miles off.

38Good
  • Fine particles (PM2.5)38Good4.7 mi
  • Ozone13Good11 ppb4.5 mi
  • Coarse particles (PM10)16Good5.5 mi
  • Nitrogen dioxide3Good3.3 ppb5.5 mi
  • Sulfur dioxide0Good0.5 ppb4.5 mi

The days ahead

Good each day through Fri Oct 16, led by ozone. Yesterday measured 40, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Gary/Chicago International Airport

0.13 in in the last 24 hours, 0.19 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.13in
Last 3 days
0.19in

Visibility

How far you can see at Gary/Chicago International Airport, the next 45 hours

Visibility stays 7 miles or more through Sat 7 PM, lowest 7 miles Fri 12 PM.

FriSat

Airfield

Code
GYY
ICAO
KGYY
IATA
GYY
Field elevation
591 ft
Serves
Gary
Kind
Medium airport
Scheduled service
Yes
Its own instrument
GYY
Wind now
From 250° at 13 mph, read 15 Oct, 22:50

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
02 / 203,604 ft100 ftAsphalt21° / 201°9 mph head, on 2010 mph from the right
12 / 308,859 ft150 ftAsphalt124° / 304°8 mph head, on 3011 mph from the left
022012302,000 ftN250° 13 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 Gary Regional (GYY), Gary/Chicago International Airport's own instrument, measure by measure, on the field's own clock.

Temperature

68 F at 10 PM; 70 F at its warmest, 8 PM, and 59 F at its coolest, 6 AM.

Now
68F
10 PM
Highest
70F
8 PM
Lowest
59F
6 AM
Temperature and Dew point at Gary Regional, temperature from 59.0 to 69.8, the latest 68.0; dew point from 55.4 to 69.8, the latest 68.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF55606570Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 68 F, the air 100% saturated; the humidity ran from 77% at 11 AM to 100% at 12 AM.

Dew point now
68F
10 PM
Humidity now
100%
Humidity, range
77 to 100%
Relative humidity at Gary Regional, relative humidity from 77 to 100, the latest 100, in per cent.RELATIVE HUMIDITY%708090100Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Wind

13 mph from the west southwest at 10 PM; at its strongest 14 mph, 8 PM, with a gust of 23 mph at 8 PM.

Now
13mph
from the west southwest
Strongest
14mph
8 PM
Highest gust
23mph
8 PM
Wind and Gust at Gary Regional, wind from 3 to 14, the latest 13; gust from 16 to 23, the latest 22, in miles an hour.WIND AND GUSTmph0510152025Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMWINDGUST
Wind direction at Gary Regional, wind direction from 80 to 300, the latest 250, 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

29.76 inHg at 10 PM, rising 0.02 inHg over 3 hours; 0.38 inHg lower than a day before.

Now
29.76inHg
10 PM
3 hours
+0.02inHg
rising
24 hours
-0.38inHg
Pressure, altimeter at Gary Regional, pressure, altimeter from 29.74 to 30.16, the latest 29.76, in inches of mercury.PRESSURE, ALTIMETERinHg29.6029.8030.0030.20Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PM

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

Visibility

Down to 2 miles at 7 PM; 10 miles or more now.

Now
10+mi
Lowest
2mi
7 PM
Hours under a mile
0
Visibility at Gary Regional, visibility from 2.0 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

Cloud base

The lowest cloud base came down to 600 ft at 7 PM; a base was reported in 23 of the hours.

Lowest base now
-
Lowest in 24 hours
600ft
7 PM
Hours with a base reported
23
Lowest cloud base at Gary Regional, lowest cloud base from 600 to 10,000, the latest 1,400, in feet.LOWEST CLOUD BASEft02,5005,0007,50010,000Oct 153 AM6 AM9 AM12 PM3 PM6 PM9 PMMVFRVFR

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

Gary Regional: every reading, the last 7 days, 30 days and the year, and how well it reports

What is measuring near here

The 4 instruments nearest Gary/Chicago International Airport, 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 now2 instruments

Gary RegionalGYY

At an airfield/0.1 mi away/591 ft/level with here

temp, wind, gust, visibility, precip, pressure

measured daily2 instruments

Gary 2.6 WSWIN-LK-97

In a volunteer observer's own ground/2.3 mi away/604 ft/13 ft above here

precip, snowfall, snow depth

Crown Point 1NCRPI3

At a cooperative observer's station/12.7 mi away/699 ft/108 ft above here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Indiana

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

Near Gary/Chicago International Airport

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

Near Gary/Chicago International Airport