BreatheCheck LIVE Get alerts

Fort Worth, TX UV Index Today

Modelled for · GMT-5

What is the UV index in Fort Worth right now?

2.2 Low

EPA describes low UV as needing no protection for most people.

Today's peak is 8.7 (Very High) at about 1pm local time.

When is UV strongest in Fort Worth today?

UV in Fort Worth peaks at 8.7 (Very High) around 1pm local time (GMT-5). It stays at 6 or above — the high band — for 4 hours, roughly 12pm to 4pm. UV is 3 or above for 7 hours.

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

Fort Worth today, in numbers

Latitude
32.7°N — 104 of 121 from the north
Today's peak
8.7 (Very High) — 13 of 121 nationally
Peak arrives
1pm local (GMT-5)
At or above 6
4 hours, 12pm to 4pm
At or above 3
7 hours, 10am to 5pm

The window from 12pm to 4pm is the practical answer for Fort Worth today. Nationally today the spread runs 11.4 in Hilo (20°N) to 1.3 in Fargo (47°N). Why latitude and the clock decide this →

The low end of the state's elevation ramp

Fort Worth stands at 541 feet. Head west and the ground does not stop climbing: 1,729 feet at Abilene, 3,202 at Lubbock, higher again beyond that. The city’s own 165 meters buy it nothing measurable in the index. What they mark is which end of the Texas ultraviolet gradient this is, and it is the bottom end. Two Texas cities can run different numbers under an identical sun, and the reason is the depth of air the light crossed, not the weather in it.

The city sits on a second boundary as well, between humid eastern Texas and the drier country beyond, and that one matters far less than it looks like it should. Water vapor absorbs very little in the ultraviolet band. A muggy Fort Worth afternoon and a dry West Texas one at the same sun angle under the same clear sky deliver close to the same reading, even though only one of them is unpleasant to stand in. Humidity is a usable cue for heat here and no cue at all for ultraviolet.

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.

Dallas, TX 30 mi · 32.8°N peak 8.6 Austin, TX 172 mi · 30.3°N peak 8.7 Oklahoma City, OK 190 mi · 35.5°N peak 8.2

What does Fort Worth’s UV index mean today?

2.2 is Low. EPA describes low UV as needing no protection for most people. Today Fort Worth also reaches Very High at its peak — a different band from the one it is in right now, which is why the hour matters as much as the day.

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 Fort Worth 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 Fort Worth

What is the UV index in Fort Worth today?

2.2 right now (Low), peaking at 8.7 around 1pm local time. UV stays at 6 or above for 4 hours, from about 12pm to 4pm. This is a modelled value, not a ground measurement.

When is UV strongest in Fort Worth today?

Around 1pm local time (GMT-5), 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.

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

Updated