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Anaheim, CA UV Index Today

Modelled for · GMT-7

Right now

9.4 Very High

EPA suggests avoiding the sun between 10am and 4pm where you can.

Today's peak is 9.9 (Very High) at about 1pm local time.

Hour by hour today

Local time, midnight to midnight. Bar colour is the EPA UV band, never restyled.

Anaheim today, in numbers

Latitude
33.8°N — 95 of 121 from the north
Today's peak
9.9 (Very High) — 9 of 121 nationally
Peak arrives
1pm local (GMT-7)
At or above 6
5 hours, 11am to 4pm
At or above 3
7 hours, 10am to 5pm

The window from 11am to 4pm is the practical answer for Anaheim today. Nationally today the spread runs 10.9 in Tucson (32°N) to 1.5 in Anchorage (61°N). Why latitude and the clock decide this →

Nearest metros we model

UV changes with latitude, not with a city boundary, so a neighbour a hundred miles north reads differently for a reason.

Irvine, CA 12 mi · 33.7°N peak 9.6 Long Beach, CA 17 mi · 33.8°N peak 9.6 Los Angeles, CA 24 mi · 34.0°N peak 9.6

Where Anaheim sits on the scale

9.4 is Very High. EPA suggests avoiding the sun between 10am and 4pm where you can. Today Anaheim also reaches Very High at its peak .

The scale is open-ended: 11 is where the named bands stop, not the maximum. All five bands, with the EPA guidance for each →

Modelled, not measured

The UV figures for Anaheim are computed by the Copernicus atmosphere model, not read off an instrument here — unlike the AQI on our air-quality pages, which comes from a regulatory monitor. Cloud is where a UV model is weakest. What that means in practice →

Questions about UV in Anaheim

What is the UV index in Anaheim today?

9.4 right now (Very High), peaking at 9.9 around 1pm local time. UV stays at 6 or above for 5 hours, from about 11am to 4pm. This is a modelled value, not a ground measurement.

When is UV strongest in Anaheim today?

Around 1pm local time (GMT-7), not at noon — solar noon drifts across a timezone and daylight saving moves it later on the clock.

Is this measured or modelled?

Modelled. The figures come from the Copernicus atmosphere model via Open-Meteo, unlike the AQI on our air-quality pages, which is read from an EPA regulatory monitor. Cloud cover is where a UV model is weakest.

Anaheim air qualityThe AQI, from a regulatory monitor rather than a model UV across the USWhere Anaheim sits against every metro we track

Updated