North American Sites


Phoenix, Arizona

Along with southern Florida, Arizona has long been considered a benchmark for outdoor exposure testing possessing high levels of solar radiation and elevated temperatures, two crucial factors in weathering processes. Unlike southern Florida, however, Arizona has low relative humidity (approximately 40%) which can have a distinct effect on materials durability.Atlas Weathering Services Group's Arizona desert site, DSET Laboratories, is located approximately 50km (30mi) north of metropolitan Phoenix in an unpolluted environment. Since 1948, DSET has offered desert exposure testing suitable for materials used in a wide range of industries, including automotive, construction and consumer products.

Latitude: 33º 54' North
Longitude: 112º 08' West
Elevation: 610 meters
Average Temp: 22 °C
Avg. Relative Humidity: 37 %
Total Rain: 255 mm
Total Radiant Exposure: 8,004 MJ/m²

Prescott, Arizona

With an elevation of 1531m (5016 ft) this unpolluted, high altitude environment accumulates annual total radiant energy of 7000 MJ/m2. Average yearly rainfall of 1090mm (43in), cold winter temperatures, and high levels of total UV radiation make this a good site for testing materials commonly used in alpine environments.

Latitude: 34º 39' North
Longitude: 112º 26' West
Elevation: 1531 meters
Average Temp: 12 °C
Avg. Relative Humidity: 65 %
Total Rain: 1093 mm
Total Radiant Exposure: 7,000 MJ/m²

Miami, Florida

For over 75 years, the Miami region of southern Florida has been a benchmark for outdoor testing of materials durability. High levels of ultraviolet radiation, humidity and temperature combine to provide a subtropical environment widely specified for outdoor exposure testing of paints, coatings, textiles and plastics used in various industries worldwide.

Latitude: 25º 52' North
Longitude: 80º 27' West
Elevation: 3 meters
Average Temp: 23 °C
Avg. Relative Humidity: 78 %
Total Rain: 1685 mm
Total Radiant Exposure: 6,588 MJ/m²

Keys, Florida

The Florida Keys exposure site provides a highly corrosive environment for testing. Specimens will be affected by the salt water mist from the continuous ocean breezes.

Latitude: 24º 33' North
Longitude: 81º 45' West
Elevation: 1 meter
Average Temp: 25 °C
Avg. Relative Humidity: 73 %
Total Rain: 989 mm
Total Radiant Exposure: N/A

Jacksonville, Florida

The Jacksonville exposure facility, located on Blount Island in the Port of Jacksonville, provides a unique combination of conditions yielding an "acid etch environment" for the exposure of coatings. The combination of several coal and oil fired electrical power plants, the salt atmosphere of the seaport, and the heat and humidity of Florida makes this an ideal location for environmental etch resistance tests, as specified by automotive manufacturers.

Latitude: 30º 29' North
Longitude: 81º 42' West
Elevation: 8 meters
Average Temp: 20 °C
Avg. Relative Humidity: 76 %
Total Rain: 1303 mm
Total Radiant Exposure: 5,800 MJ/m²

Chicago, Illinois

The Chicago, Illinois site is an example of a northern, temperate climate characterized by warm summers and cold winters with multiple freezes. It is also an example of a light industrial region and can be useful in many materials testing applications.

Latitude: 41º 47' North
Longitude: 87º 45' West
Elevation: 190 meters
Average Temp: 10 °C
Avg. Relative Humidity: 69 %
Total Rain: 856 mm
Total Radiant Exposure: 5,100 MJ/m²

Alberta, Michigan

The Michigan exposure site is categorized as a northern cold climate. The site has numerous winter freeze days and freeze/thaw cycles in Spring and Fall, as well as temperate summers.

Latitude: 46º 65' North
Longitude: 88º 48' West
Elevation: 399 meters
Average Temp: 6.1º C
Avg. Relative Humidity: 64%
Total Rain: 847 mm
Total Radiant Exposure: N/A

Medina, Ohio

The weathering site in Medina represents a Northern Temperate environment.

Latitude: 41° 07' North
Longitude: 81° 54' West
Elevation: 336 meters
Average Temp: 10 °C
Avg. Relative Humidity: 72 %
Total Rain: 844 mm
Total Radiant Exposure: 5,100 MJ/m²
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