Live UV forecast for 1 cities
American Samoa stretches from -14.2781° to -14.2781° latitude (Southern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 9.8 in Pago Pago (peak in February), while in Pago Pago the yearly maximum is only ≈ 9.8. As in the whole Southern hemisphere, the sun is strongest from November to February — opposite to Europe and North America.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tropical | 1 | 9.7 | 9.8 | 9.5 | 8.8 | 8.1 | 7.5 | 7.7 | 8.5 | 9.2 | 9.7 | 9.8 | 9.7 | 9.8 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Pago Pago as a reference: the UV index reaches 6+ in January, February, March, April, May, June, July, August, September, October, November and December. In the sunniest zones (see table) SPF 30–50+ is needed almost year-round; in the mildest — only in late spring and summer.
The calculated clear-sky maximum is ≈ 9.8 — in Pago Pago around February. Values above this occur only near the equator and in high mountains.
Pago Pago (peak ≈ 9.8), followed by
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and
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. The mildest sun is in Pago Pago (max ≈ 9.8).
In Pago Pago and similar latitudes the UV reaches 6+ in January, February, March, April, May, June, July, August, September, October, November and December: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 9.8. UV 11+ occurs only near the equator, in deserts and high mountains.