Sun and glare index / Tucson
Sun and glare in Tucson right now
UV 1.6 · Low UV: air 70°F, feels like 70°F, least sun 17:00–19:00.
- Low UV: sunglasses right now are for glare, not UV
UV is MET Norway's clear-sky value with the hour's cloud taken out; the label is the WHO category. From 3 up, UV-rated sunglasses earn their place; glare (low sun, water, snow) is a separate question that polarized lenses answer.
Next 24 hours
| Time | Air | UV index |
|---|---|---|
| 11:00 PM | 70°F | 1.6 |
| 2:00 AM | 64°F | 0 |
| 5:00 AM | 58°F | 0 |
| 8:00 AM | 55°F | 0 |
| 11:00 AM | 52°F | 0 |
| 2:00 PM | 52°F | 0 |
| 5:00 PM | 61°F | 1.6 |
| 8:00 PM | 74°F | 5 |
Weather data: MET Norway · updated 11:11 PM · refreshes every 15 minutes
Sun and glare in Tucson
In Tucson, UV reaches the high and very high categories from spring through fall and the sun is strong enough at midday that a hat and sunglasses are the normal uniform. Driving west in the late afternoon is the daily glare problem; polarized lenses cut it.
How the index works
MET Norway gives a clear-sky UV index for each hour; cloud takes up to 70% of it away, so the number here is for the sky you have. The WHO categories: low 0–2, moderate 3–5, high 6–7, very high 8–10, extreme 11+. Eyes take UV damage at any category over time (cataract and pterygium are the documented ones), so a UV400 lens matters more than how dark it is. Glare is reflected light and peaks with a low sun, water and snow; that is the polarized question, not the UV one.