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Atlas (Beta)

Days with Heavy Fog

North AmericaPhysical Environment

Average annual number of days in North America with heavy fog, where fog has made driving conditions dangerous

A map illustrates the distribution of days with heavy fog across North America using a color-coded scheme.

Areas with 80 days or more of heavy fog are shaded in dark blue, prominently seen in some parts of northern Canada and the western coast of the United States. Regions with 60 days of heavy fog are shaded in purple, visible in some areas of northern Alaska and northeastern Canada, including regions of Victoria Islands, Parry Islands, and Naujaat. Areas experiencing 40 days of heavy fog are shaded in pink, found in parts of extreme eastern Canada, including Ellesmere, the Canadian Arctic Archipelago, Nunavut, and some coastal regions of the northern United States. Regions with 20 days of heavy fog are shaded in orange, noticeable in parts of the western and northeastern United States, and most of the eastern coast, as well as in northern Canada. Areas with 10 days of heavy fog are shaded in yellow, observed in many parts of the United States and Canada including South Dakota, North Dakota, Iowa, Illinois, Kentucky, Tennessee, Dallas, Montana, New York, Calgary, Newfoundland and Labrador, Manitoba, Yellowknife, Northern Territories, Yukon, Fairbanks, Alaska, Nome, Whitehorse, Juneau, New Mexico.

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Days with Heavy Fog						Income Inequality			Doppler Radar Sites (U.S.)
80 and over	60–79	40–59	20–39	10–19	Under 10	Class	Rank	GINI index percentage	ABERDEEN	ALBANY	ALBUQUERQUE	ALTUS AFB	AMARILLO	ANDREWS AFB	ATLANTA	AUSTIN SAN ANTONIO	BALTIMORE WASHINGTON	BEALE AFB	BETHEL FAA	BILLINGS	BINGHAMTON	BIRMINGHAM	BISMARCK	BOISE	BOSTON	BROWNSVILLE	BUFFALO	BURLINGTON	CANNON AFB	CEDAR CITY	CHARLESTON	CHARLOTTE	CHEYENNE	CHICAGO MIDWAY	CHICAGO OHARE	CHICAGO	CINCINNATI	CLEVELAND	COLUMBIA	COLUMBUS AFB	COLUMBUS	CORPUS CHRISTI	COVINGTON	DALLAS FT WORTH	DALLAS LOVE FIELD	DALLAS	DAVENPORT	DAYTON	DENVER FRONT RANGE AP	DENVER	DES MOINES	DETROIT	DODGE CITY	DOVER AFB	DULUTH	DYESS AFB	EDWARDS	EGLIN AFB	EL PASO	ELKO	EUREKA	EVANSVILLE	FAIRBANKS	FLAGSTAFF	FORT CAMPBELL	FORT DRUM	FORT HOOD	FORT POLK	FORT RUCKER	FORT SMITH	FORT WAYNE	FT LAUDERDALE	GAYLORD	GLASGOW	GOODLAND	GRAND FORKS	GRAND JUNCTION	GRAND RAPIDS	GREAT FALLS	GREEN BAY	GREER	HASTINGS	HOLLOMAN AFB	HOULTON	HOUSTON HOBBY	HOUSTON INTERNATIONAL	HOUSTON	HUNTSVILLE	INDIANAPOLIS	JACKSON BRANDON	JACKSON	JACKSONVILLE	KAMUELA	KANSAS CITY	KING SALMON	KNOXVILLE	LA CROSSE	LAKE CHARLES	LANGLEY HILL NW WASHINGTON	LAS VEGAS	LAUGHLIN AFB	LINCOLN	LITTLE ROCK	LOS ANGELES	LOUISVILLE	LUBBOCK	MARQUETTE	MAXWELL AFB	MEDFORD	MELBOURNE	MEMPHIS	MIAMI	MIDLAND ODESSA	MILWAUKEE	MINNEAPOLIS	MINOT AFB	MISSOULA	MOBILE	MOLOKAI	MOODY AFB	MOREHEAD CITY	NASHVILLE	NEW ORLEANS	NEW YORK CITY	NEWARK	NOME	NORFOLK RICH	NORMAN NSSL	NORMAN WFO	NORTH PLATTE	OKLAHOMA CITY	OMAHA	ORLANDO INTERNATIONAL	PADUCAH	PENDLETON	PHILADELPHIA	PHOENIX	PITTSBURGH	POCATELLO	PORTLAND	PUEBLO	RALEIGH DURHAM	RALEIGH	RAPID CITY	RENO	RIVERTON	ROANOKE	ROBINS AFB	ROC FAA REDUNDANT RDA 1	SACRAMENTO	SALT LAKE CITY	SAN ANGELO	SAN DIEGO	SAN FRANCISCO	SAN JOAQUIN VALLEY	SANTA ANA MOUNTAINS	SEATTLE	SHREVEPORT	SIOUX FALLS	SOUTH SHORE	SPOKANE	SPRINGFIELD	ST LOUIS	STATE COLLEGE	STERLING	TALLAHASSEE	TAMPA	TOPEKA	TUCSON	TULSA	VANCE AFB	VANDENBERG AFB	WASHINGTON DULLES	WASHINGTON NATIONAL	WEST PALM BEACH	WICHITA	WILMINGTON	YUMA












3.14%	5.14%	5.38%	18.2%	41.6%	24.4%				1	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1	2	1	1	1	1	1	2	1	1	1	1	2	1	1	1	1	1	1	2	1	2	2	1	1	1	1	1	1	2	2	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1	1	1	2	1	1	1	1	1	2	1	1

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