UV Radiation

UV radiation burden points from 0 to 100. The raw value combines population-weighted long-term UV index exposure, estimated high-UV days and peak exposure modifiers for altitude, ozone, latitude, cloudiness and snow or desert reflectance. Lower raw values mean lower long-term skin and eye exposure risk; the score equals 100 minus the raw value. WHO Global Solar UV Index thresholds define the health interpretation, TEMIS provides the UV-index climatology anchor, and NASA POWER, NASA Ozone Watch, GHSL and WorldPop are used for plausibility and population weighting.
1 Greenland5 UV exposure points 5 UV exposure points 95
2 Faroe Islands8 UV exposure points 8 UV exposure points 92
3 Iceland9 UV exposure points 9 UV exposure points 91
4 Canada10 UV exposure points 10 UV exposure points 90
4 Denmark10 UV exposure points 10 UV exposure points 90
4 Estonia10 UV exposure points 10 UV exposure points 90
4 Finland10 UV exposure points 10 UV exposure points 90
4 Ireland10 UV exposure points 10 UV exposure points 90
4 Latvia10 UV exposure points 10 UV exposure points 90
4 Lithuania10 UV exposure points 10 UV exposure points 90
4 Netherlands10 UV exposure points 10 UV exposure points 90
4 Norway10 UV exposure points 10 UV exposure points 90
4 Russia10 UV exposure points 10 UV exposure points 90
4 Sweden10 UV exposure points 10 UV exposure points 90
4 United Kingdom10 UV exposure points 10 UV exposure points 90
16 Belarus20 UV exposure points 20 UV exposure points 80
16 Belgium20 UV exposure points 20 UV exposure points 80
16 Czech Republic20 UV exposure points 20 UV exposure points 80
16 Germany20 UV exposure points 20 UV exposure points 80
16 Kazakhstan20 UV exposure points 20 UV exposure points 80
16 Korea Republic20 UV exposure points 20 UV exposure points 80
16 Luxembourg20 UV exposure points 20 UV exposure points 80
16 Mongolia20 UV exposure points 20 UV exposure points 80
16 Poland20 UV exposure points 20 UV exposure points 80
16 Saint Pierre and Miquelon20 UV exposure points 20 UV exposure points 80
16 Slovakia20 UV exposure points 20 UV exposure points 80
16 Slovenia20 UV exposure points 20 UV exposure points 80
16 Switzerland20 UV exposure points 20 UV exposure points 80
16 Ukraine20 UV exposure points 20 UV exposure points 80
30 Albania33 UV exposure points 33 UV exposure points 67
30 Andorra33 UV exposure points 33 UV exposure points 67
30 Austria33 UV exposure points 33 UV exposure points 67
30 Bosnia and Herzegovina33 UV exposure points 33 UV exposure points 67
30 Bulgaria33 UV exposure points 33 UV exposure points 67
30 Croatia33 UV exposure points 33 UV exposure points 67
30 France33 UV exposure points 33 UV exposure points 67
30 Hungary33 UV exposure points 33 UV exposure points 67
30 Italy33 UV exposure points 33 UV exposure points 67
30 Japan33 UV exposure points 33 UV exposure points 67
30 Korea DPR33 UV exposure points 33 UV exposure points 67
30 Kosovo33 UV exposure points 33 UV exposure points 67
30 Liechtenstein33 UV exposure points 33 UV exposure points 67
30 Moldova33 UV exposure points 33 UV exposure points 67
30 Montenegro33 UV exposure points 33 UV exposure points 67
30 North Macedonia33 UV exposure points 33 UV exposure points 67
30 Romania33 UV exposure points 33 UV exposure points 67
30 San Marino33 UV exposure points 33 UV exposure points 67
30 Serbia33 UV exposure points 33 UV exposure points 67
30 United States33 UV exposure points 33 UV exposure points 67
50 Armenia38 UV exposure points 38 UV exposure points 62
50 Georgia38 UV exposure points 38 UV exposure points 62
52 Kyrgyzstan43 UV exposure points 43 UV exposure points 57
53 Tajikistan44 UV exposure points 44 UV exposure points 56
54 China46 UV exposure points 46 UV exposure points 54
54 Gibraltar46 UV exposure points 46 UV exposure points 54
54 Greece46 UV exposure points 46 UV exposure points 54
54 Monaco46 UV exposure points 46 UV exposure points 54
54 Portugal46 UV exposure points 46 UV exposure points 54
54 Spain46 UV exposure points 46 UV exposure points 54
54 Turkey46 UV exposure points 46 UV exposure points 54
61 New Zealand47 UV exposure points 47 UV exposure points 53
62 Azerbaijan48 UV exposure points 48 UV exposure points 52
62 Uruguay48 UV exposure points 48 UV exposure points 52
64 Argentina49 UV exposure points 49 UV exposure points 51
65 Chile51 UV exposure points 51 UV exposure points 49
66 Bangladesh60 UV exposure points 60 UV exposure points 40
66 Bhutan60 UV exposure points 60 UV exposure points 40
66 Chinese Taipei60 UV exposure points 60 UV exposure points 40
66 Hong Kong60 UV exposure points 60 UV exposure points 40
66 India60 UV exposure points 60 UV exposure points 40
66 Lebanon60 UV exposure points 60 UV exposure points 40
66 Morocco60 UV exposure points 60 UV exposure points 40
66 Paraguay60 UV exposure points 60 UV exposure points 40
66 South Africa60 UV exposure points 60 UV exposure points 40
66 Swaziland60 UV exposure points 60 UV exposure points 40
66 Syria60 UV exposure points 60 UV exposure points 40
66 Tunisia60 UV exposure points 60 UV exposure points 40
66 Turkmenistan60 UV exposure points 60 UV exposure points 40
66 Uzbekistan60 UV exposure points 60 UV exposure points 40
66 Zimbabwe60 UV exposure points 60 UV exposure points 40
81 Cyprus61 UV exposure points 61 UV exposure points 39
81 Israel61 UV exposure points 61 UV exposure points 39
81 Jordan61 UV exposure points 61 UV exposure points 39
81 Malta61 UV exposure points 61 UV exposure points 39
81 Nepal61 UV exposure points 61 UV exposure points 39
81 Palestine61 UV exposure points 61 UV exposure points 39
87 Botswana62 UV exposure points 62 UV exposure points 38
87 Namibia62 UV exposure points 62 UV exposure points 38
89 Iran63 UV exposure points 63 UV exposure points 37
90 Pakistan64 UV exposure points 64 UV exposure points 36
91 Afghanistan65 UV exposure points 65 UV exposure points 35
92 Bolivia70 UV exposure points 70 UV exposure points 30
92 Congo70 UV exposure points 70 UV exposure points 30
92 Gabon70 UV exposure points 70 UV exposure points 30
95 Congo DR71 UV exposure points 71 UV exposure points 29
95 Equatorial Guinea71 UV exposure points 71 UV exposure points 29
95 French Guiana71 UV exposure points 71 UV exposure points 29
95 Guyana71 UV exposure points 71 UV exposure points 29
95 Indonesia71 UV exposure points 71 UV exposure points 29
95 Malaysia71 UV exposure points 71 UV exposure points 29
95 Singapore71 UV exposure points 71 UV exposure points 29
95 Suriname71 UV exposure points 71 UV exposure points 29
103 Benin74 UV exposure points 74 UV exposure points 26
103 Bermuda74 UV exposure points 74 UV exposure points 26
103 Brazil74 UV exposure points 74 UV exposure points 26
103 Burkina Faso74 UV exposure points 74 UV exposure points 26
103 Cambodia74 UV exposure points 74 UV exposure points 26
103 Cameroon74 UV exposure points 74 UV exposure points 26
103 Central African Republic74 UV exposure points 74 UV exposure points 26
103 Eritrea74 UV exposure points 74 UV exposure points 26
103 Gambia74 UV exposure points 74 UV exposure points 26
103 Ghana74 UV exposure points 74 UV exposure points 26
103 Guinea74 UV exposure points 74 UV exposure points 26
103 Guinea-Bissau74 UV exposure points 74 UV exposure points 26
103 Ivory Coast74 UV exposure points 74 UV exposure points 26
103 Laos74 UV exposure points 74 UV exposure points 26
103 Liberia74 UV exposure points 74 UV exposure points 26
103 Macau74 UV exposure points 74 UV exposure points 26
103 Madagascar74 UV exposure points 74 UV exposure points 26
103 Malawi74 UV exposure points 74 UV exposure points 26
103 Mozambique74 UV exposure points 74 UV exposure points 26
103 Myanmar74 UV exposure points 74 UV exposure points 26
103 New Caledonia74 UV exposure points 74 UV exposure points 26
103 Nigeria74 UV exposure points 74 UV exposure points 26
103 Philippines74 UV exposure points 74 UV exposure points 26
103 SĂ£o TomĂ© and PrĂ­ncipe74 UV exposure points 74 UV exposure points 26
103 Senegal74 UV exposure points 74 UV exposure points 26
103 Sierra Leone74 UV exposure points 74 UV exposure points 26
103 Somalia74 UV exposure points 74 UV exposure points 26
103 South Sudan74 UV exposure points 74 UV exposure points 26
103 Thailand74 UV exposure points 74 UV exposure points 26
103 Togo74 UV exposure points 74 UV exposure points 26
103 Venezuela74 UV exposure points 74 UV exposure points 26
103 Vietnam74 UV exposure points 74 UV exposure points 26
103 Zambia74 UV exposure points 74 UV exposure points 26
136 Algeria75 UV exposure points 75 UV exposure points 25
136 Bahrain75 UV exposure points 75 UV exposure points 25
136 Chad75 UV exposure points 75 UV exposure points 25
136 Egypt75 UV exposure points 75 UV exposure points 25
136 Iraq75 UV exposure points 75 UV exposure points 25
136 Kuwait75 UV exposure points 75 UV exposure points 25
136 Libya75 UV exposure points 75 UV exposure points 25
136 Mali75 UV exposure points 75 UV exposure points 25
136 Mauritania75 UV exposure points 75 UV exposure points 25
136 Niger75 UV exposure points 75 UV exposure points 25
136 Oman75 UV exposure points 75 UV exposure points 25
136 Qatar75 UV exposure points 75 UV exposure points 25
136 Saudi Arabia75 UV exposure points 75 UV exposure points 25
136 Sudan75 UV exposure points 75 UV exposure points 25
136 Western Sahara75 UV exposure points 75 UV exposure points 25
136 Yemen75 UV exposure points 75 UV exposure points 25
152 Lesotho76 UV exposure points 76 UV exposure points 24
153 Tanzania77 UV exposure points 77 UV exposure points 23
154 Colombia78 UV exposure points 78 UV exposure points 22
154 Mexico78 UV exposure points 78 UV exposure points 22
154 Uganda78 UV exposure points 78 UV exposure points 22
157 Burundi79 UV exposure points 79 UV exposure points 21
157 Peru79 UV exposure points 79 UV exposure points 21
157 Rwanda79 UV exposure points 79 UV exposure points 21
160 Brunei83 UV exposure points 83 UV exposure points 17
161 Fiji85 UV exposure points 85 UV exposure points 15
161 Kenya85 UV exposure points 85 UV exposure points 15
161 Micronesia85 UV exposure points 85 UV exposure points 15
161 Palau85 UV exposure points 85 UV exposure points 15
161 Papua New Guinea85 UV exposure points 85 UV exposure points 15
161 Samoa85 UV exposure points 85 UV exposure points 15
161 Solomon Islands85 UV exposure points 85 UV exposure points 15
161 Vanuatu85 UV exposure points 85 UV exposure points 15
169 American Samoa86 UV exposure points 86 UV exposure points 14
169 Angola86 UV exposure points 86 UV exposure points 14
169 Anguilla86 UV exposure points 86 UV exposure points 14
169 Antigua and Barbuda86 UV exposure points 86 UV exposure points 14
169 Aruba86 UV exposure points 86 UV exposure points 14
169 Bahamas86 UV exposure points 86 UV exposure points 14
169 Barbados86 UV exposure points 86 UV exposure points 14
169 Belize86 UV exposure points 86 UV exposure points 14
169 British Virgin Islands86 UV exposure points 86 UV exposure points 14
169 Cape Verde86 UV exposure points 86 UV exposure points 14
169 Cayman Islands86 UV exposure points 86 UV exposure points 14
169 Comoros86 UV exposure points 86 UV exposure points 14
169 Cook Islands86 UV exposure points 86 UV exposure points 14
169 Cuba86 UV exposure points 86 UV exposure points 14
169 Curacao86 UV exposure points 86 UV exposure points 14
169 Dominica86 UV exposure points 86 UV exposure points 14
169 Dominican Republic86 UV exposure points 86 UV exposure points 14
169 Grenada86 UV exposure points 86 UV exposure points 14
169 Guadeloupe86 UV exposure points 86 UV exposure points 14
169 Guam86 UV exposure points 86 UV exposure points 14
169 Haiti86 UV exposure points 86 UV exposure points 14
169 Honduras86 UV exposure points 86 UV exposure points 14
169 Jamaica86 UV exposure points 86 UV exposure points 14
169 Kiribati86 UV exposure points 86 UV exposure points 14
169 Maldives86 UV exposure points 86 UV exposure points 14
169 Marshall Islands86 UV exposure points 86 UV exposure points 14
169 Martinique86 UV exposure points 86 UV exposure points 14
169 Mauritius86 UV exposure points 86 UV exposure points 14
169 Mayotte86 UV exposure points 86 UV exposure points 14
169 Montserrat86 UV exposure points 86 UV exposure points 14
169 Nauru86 UV exposure points 86 UV exposure points 14
169 Nicaragua86 UV exposure points 86 UV exposure points 14
169 Niue86 UV exposure points 86 UV exposure points 14
169 Northern Mariana Islands86 UV exposure points 86 UV exposure points 14
169 Panama86 UV exposure points 86 UV exposure points 14
169 Puerto Rico86 UV exposure points 86 UV exposure points 14
169 RĂ©union86 UV exposure points 86 UV exposure points 14
169 Saint Kitts and Nevis86 UV exposure points 86 UV exposure points 14
169 Saint Lucia86 UV exposure points 86 UV exposure points 14
169 Saint Vincent and the Grenadines86 UV exposure points 86 UV exposure points 14
169 Saint-Martin86 UV exposure points 86 UV exposure points 14
169 Seychelles86 UV exposure points 86 UV exposure points 14
169 Sint Maarten86 UV exposure points 86 UV exposure points 14
169 Sri Lanka86 UV exposure points 86 UV exposure points 14
169 Tahiti86 UV exposure points 86 UV exposure points 14
169 Timor-Leste86 UV exposure points 86 UV exposure points 14
169 Tonga86 UV exposure points 86 UV exposure points 14
169 Trinidad and Tobago86 UV exposure points 86 UV exposure points 14
169 Turks and Caicos Islands86 UV exposure points 86 UV exposure points 14
169 Tuvalu86 UV exposure points 86 UV exposure points 14
169 U.S. Virgin Islands86 UV exposure points 86 UV exposure points 14
169 Wallis and Futuna86 UV exposure points 86 UV exposure points 14
169 Zanzibar86 UV exposure points 86 UV exposure points 14
222 Djibouti87 UV exposure points 87 UV exposure points 13
222 Ethiopia87 UV exposure points 87 UV exposure points 13
222 United Arab Emirates87 UV exposure points 87 UV exposure points 13
225 Costa Rica88 UV exposure points 88 UV exposure points 12
225 El Salvador88 UV exposure points 88 UV exposure points 12
227 Ecuador90 UV exposure points 90 UV exposure points 10
227 Guatemala90 UV exposure points 90 UV exposure points 10
229 Australia95 UV exposure points 95 UV exposure points 5

Last rating: June 15th, 2026

How the Raw Value Is Calculated

The raw value is a UV radiation burden index from 0 to 100 exposure points. 0 means very low long-term UV exposure, while 100 means very high exposure. Lower values are better; the score equals 100 minus the raw value.

Nomadino does not use a single weather value for a specific day. The raw value describes a long-term country profile for erythemally effective UV radiation in the places where people actually live.

The weighting is: 70% population-weighted long-term daily maximum UV index, 20% estimated population-days with very high UV exposure at UV index 8 or above, and 10% peak exposure plus plausibility factors.

WHO thresholds provide the health frame: UV index 0 to 2 is low, protection becomes relevant from 3, exposure is very high from 8 and extreme from 11. These thresholds are translated into exposure points so countries with many very high UV days are penalised clearly.

TEMIS provides the main UV-index anchor. GHSL and WorldPop population grids help avoid over-weighting large uninhabited areas. NASA POWER, NASA Ozone Watch and regional climate plausibility checks are used for cloudiness, ozone context, solar elevation and radiation environment.

Altitude, tropical location, southern ozone and radiation conditions, snow or desert reflectance and small-island or territory context can raise the raw value. Persistent cloudiness, humid tropical settings and high northern latitudes can reduce it.

The fact that the leading countries are mostly at high northern latitudes is therefore expected: the sun is lower in the sky, long winters strongly reduce annual UV exposure, and the Southern Hemisphere has fewer inhabited countries at comparable high latitudes. This only says something about UV exposure, not about climate comfort, warmth, sunshine hours or vitamin-D conditions.

This indicator measures health-relevant UV exposure. It is not a weather forecast, a sunshine-hours rating, a temperature rating or medical advice on vitamin D or individual sun protection.