Canada

Mexico

United States

North America

A map highlights the North American Free Trade Agreement Members such as Canada, U S, and Mexico in green.

Member states of the North American Free Trade Agreement, an organization founded in 1994 to create a trade bloc in North America with Canada, Mexico, and the United States

Countries

World

NAFTA Now

North American Free Trade Agreement (NAFTA) Members

Alaska

Arizona

Utah

Yukon

Northwest Territories

District of Columbia

Florida

Idaho

New Hampshire

Rhode Island

Vermont

Washington

Wyoming

Nunavut

Montana

Maine

North Dakota

Kentucky

Nova Scotia

Virginia

Delaware

Prince Edward Island

Saskatchewan

Mississippi

West Virginia

Nebraska

Texas

Missouri

Louisiana

North Carolina

Oregon

New Brunswick

Alabama

New Mexico

Kansas

Wisconsin

British Columbia

Newfoundland and Labrador

New Jersey

South Carolina

Michigan

Alberta

Connecticut

Pennsylvania

Colorado

Nevada

Massachusetts

Georgia

New York

Maryland

Québec

Manitoba

Oklahoma

Tennessee

Ontario

California

Arkansas

South Dakota

Ohio

Indiana

Minnesota

Iowa

Illinois

None

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

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

Days with Heavy Fog

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.

North American Free Trade Agreement (NAFTA) Members	Days with Heavy Fog
Value	80 and over	60–79	40–59	20–39	10–19	Under 10

	3.14%	5.14%	5.38%	18.2%	41.6%	24.4%