All work

Arc’teryx Conditions

2026mountain weather app

Arc’teryx Conditions — a terrain model of a peak by a mountain lake

The day, shown as the mountain.

A weather app for one climb, in Arc’teryx’s own technical language: layers with defined roles, base, midlayer and hardshell. The terrain is rendered live and relit by the sun’s computed position for the date as you drag through the hours.

Arc’teryx Conditions — today at 07:40, clear and calm
Today at 07:40, clear and calm
Arc’teryx Conditions — today at 13:00, cloud building over the summit
Today at 13:00, cloud building over the summit

From the trailhead to the summit.

Hours shows the sky over the summit from 05:00 to 21:00 as one strip, with the wind beneath. Route shades the part of the climb below freezing, and Layers turns temperature by altitude into what to wear where.

Arc’teryx Conditions — hours: the sky over the summit
Hours: the sky over the summit
Arc’teryx Conditions — the route, with the part below freezing shaded
The route, with the part below freezing shaded
Arc’teryx Conditions — what to wear where
What to wear where
Arc’teryx Conditions — alpha SV, the shell for the worst of it
Alpha SV, the shell for the worst of it

The navigation is the trail.

Five stops on a trail, with a peak marker on the current one. Belleza and Hanken Grotesk. The terrain comes from a procedural WebGL shader.

Not affiliated with or endorsed by Arc’teryx. The terrain is procedural, not a real mountain; the forecast is a sample; the kit rule is illustrative, not Arc’teryx advice. Sources: the REI listing for the Alpha SV; “Layering Clothes Like a Pro” on arcteryx.com.

Dmytro Dintsen
Senior product designer

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