North & South America

• Aruba (Netherlands)
  As of posting this, they link to a radar site in Venezuela. Radar is also available from Curaçao (Netherlands).

• Bahamas
  Their radar has not been available for many years. As of posting this, their site was also not available.

• Barbados
  150km, 250km and 400km range loops are available.
  
  Barbados also has an excellent Caribbean Radar Composites page. Be sure to check the imagery there if the Barbados radar has any issues:
  
  Entire Caribbean | Eastern Caribbean and part of South America | Eastern Caribbean | Northwest Caribbean

• Belize
  50km, 250km and 400km range loops are available.

• Bermuda (U.K.)
  100km, 250km and approximately 430km range loops are available. Additional imagery is also available, but for the additional options, including the approximately 430km range loop, you will need Java.

• Brazil
  There are two main sites that contain most of the radar images.
  
  Satellite and Environmental Systems Division - 240km to 250km range loops are available.
  
  Radar site from Brazil's military - 400km range loops are available.
  
  You can also view some additional radars for other parts of Brazil below:
  
  Teixeira Soares and Cascavel, Paraná Mosaic - 475km ranges
  Quixeramobim, Ceará - 400km

• Canada
  250km range loops are available.

• Cayman Islands (U.K.)
  50km, 250km and 400km range loops are available.

• Colombia
  Colombia's radar might be available here (registration required), though as of posting the site does not load. You can visit Colombia's Institute of Hydrology, Meteorology and Environmental Studies (IDEAM) here. They sometimes post radar imagery on Twitter. They seem to have at least a 300km range radar on the island of San Andrés east of Nicaragua.

• Cuba (Mirror)
  Approximately 450km range loops are available.

• Curaçao (Netherlands)
  150km and 450km range loops are available.

• Dominican Republic
  No longer available as of posting this.

• El Salvador
  Various 120km radar loops are available.

• Grenada
  This page links to Barbados' radar site.

• Guadeloupe (France)
  A closeup image centered on Guadeloupe is also available on this page.

• Guantanamo Bay
  Only the 124nm short range loop is available. It is sometimes out of date.

• Guyana
  When available, 150km, 250km and 400km range loops are available. As of posting this, imagery was not available.

• Honduras
  250km and 500km range loops are available.

• Jamaica
  240km and 480km range loops are available at times. Make sure the time is current if imagery is available as this site often has imagery that is outdated or unavailable. The link to the page also changes at times.

• Martinique (France)
  400km range loops are available from Martinique and Guadeloupe.
  
  Antilles - Radar view of most of the Lesser Antilles in the eastern Caribbean Sea.
  
  Caribbean Radar Mosaic - Lesser Antilles as well as other radar sites, when available, including the Cayman Islands, Trinidad and Tobago, Guyana and French Guiana.

• Mexico
  300km range loops are available for most locations, with some locations with a lower range, such as 240km. The availability of some of their radar sites sometimes changes.

• Nicaragua
  450km range loop is available.

• Panama
  Panama Canal - An approximately 120km range loop is available.
  
  Panama Meteorological Service - As of posting this, they display the Panama Canal radar site.

• Puerto Rico (U.S.)
  When available, 124nm and 248nm range loops are available. On September 20th, 2017, Hurricane Maria seriously damaged the radar and as of posting this it is not available.
  
  Weather Underground Long Range | NOAA Long Range

• Trinidad and Tobago
  150km, 250km and 400km range loops are available. The first two ranges have other radar products available too.

• Venezuela
  400km range loops are available. Some radar sites cover Aruba, Bonaire and Curaçao.

Other Areas

• Belgium
  240km to 300km range loops are available.

• Canary Islands (Spain)
  The maximum radar range might be 300km, but a 240km range loop is available. Radar can be viewed at Spain's meteorological service.

• Denmark
  240km range loops are available.

• Estonia
  250km range loops are available.
  
  Composite images of Nordic countries: Norway | Sweden | Finland

• Finland
  250km range loops are available.
  
  Composite images of Nordic countries: Norway | Sweden | Finland

• France
  256km range loops are available.

• Germany
  180km range loops are available.

• Iceland
  The maximum radar range is 480km, though a lesser range composite loop of the two radars is available, likely out to up to 240km.

• Ireland
  250km range loops are available. Radar data can also be viewed at the United Kingdom's Met Office.

• Latvia
  250km range loop is available. Click the image on the page to view a loop.

• Lithuania
  250km range loops are available.

• Netherlands
  The full radar range of the two radars is 320km, though a lesser range composite loop is available.

• Norway
  240km range loops are available.
  
  Composite images of Nordic countries: Norway | Sweden | Finland

• Poland
  250km range loops are available.

• Portugal
  300km range loops are available.

• Spain
  240km range loops are available.

• Sweden
  240km range loops are available.
  
  Composite images of Nordic countries: Norway | Sweden | Finland

• United Kingdom
  255km range loops are available.