# SurfaceCast: Surface Temp — How hot does asphalt get?

> How hot does asphalt get? (iPhone/iPad app by Netflowers Inc..)

- Source: https://appshunter.io/ios/app/surfacecast-surface-temp/id6794655713 (this page in markdown: same URL + `.md`)
- Developer: [Netflowers Inc.](https://appshunter.io/developer/1672067319)
- Category: Weather, Education
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: Korean, Greek, Dutch, Danish, German (Germany), Russian, Romanian, Malay, Vietnamese, Norwegian Bokmål and 23 more
- Released: 2026-08-05
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/surfacecast-surface-temp/id6794655713/reviews.md

## What is SurfaceCast?

Air temperature tells you almost nothing about how hot the ground actually
is. On a sunny summer afternoon, dark asphalt can run far hotter than the
air, while grass a step away stays close to it. SurfaceCast lets you see
that difference as a curve, hour by hour, before you go outside.

Pick a place and a date, then add the surfaces you care about — asphalt,
concrete, grass, bare soil, sand, a wooden deck, brick, a painted metal
roof, a white or dark wall. Up to five at once, drawn on the same chart so
you can compare them directly.

WALLS AND SLOPES, NOT JUST THE GROUND
Every surface has a compass direction and a tilt. Point a wall east and it
warms through the morning; point it west and it peaks late in the day. Set
a slope anywhere from flat ground to a vertical wall and watch the curve
move. Four one-tap presets cover north, east, south and west walls.

SHADE THAT BEHAVES LIKE REAL SHADE
Mark the hours when a surface falls into shadow — say, shaded from 11:00.
Sunlight drops immediately, but the temperature does not: heavy materials
keep releasing stored heat and cool down gradually, exactly as they do
outdoors. That lag is the whole point, and SurfaceCast models it.

WHAT YOU GET
• 24-hour estimated surface temperature for up to five scenarios
• Live hourly weather for your location, or any place you search
• Air temperature drawn alongside, so the gap is obvious
• Sunrise, solar noon and sunset markers, plus shaded bands on the chart
• Tap any hour for a side-by-side table: temperature, difference from air,
  sunlight on that surface, shade level and confidence
• Peak temperature and the time it happens, for every scenario
• Save scenario sets — "the back garden", "the dog walk route" — and reload
  them later with a new date
• Celsius or Fahrenheit, and it works from a cached forecast when offline

HOW IT WORKS
SurfaceCast computes the sun's position for your place and time, works out
how much sunlight lands on a surface at that angle and direction, then runs
a heat balance in short internal steps: sunlight absorbed, heat lost to the
wind, heat radiated to the sky, heat exchanged with the ground below and
cooling from evaporation on damp surfaces. Each material carries its own
absorptivity, emissivity and thermal mass, so heavy and light surfaces
behave differently — as they should.

These are physics-based estimates for observation, learning and curiosity.
Real surfaces vary with thickness, construction, moisture, nearby
reflections, local wind and the exact shape of the shadow. SurfaceCast is
not a safety instrument and does not judge whether a surface is safe to
touch or walk on — if that matters, measure it with an infrared thermometer.


## Version history (last 1 release)

### 1.0 — 2026-08-05

No release notes.

## More apps by Netflowers Inc.

- [Number Ringer](https://appshunter.io/ios/app/number-ringer/id1672067316)
- [Virtual Anchor: Anchor Watch](https://appshunter.io/ios/app/virtual-anchor-anchor-watch/id6747093987)
- [Bear Repellent: Scare Bears](https://appshunter.io/ios/app/bear-repellent-scare-bears/id6754971932)
- [潮時刻](https://appshunter.io/ios/app/id6755632982)
- [Up&Down Timer: Countdown](https://appshunter.io/ios/app/up-and-down-timer-countdown/id6755684623)
- [Countdown: Tally Counter](https://appshunter.io/ios/app/countdown-tally-counter/id6755714620)

All apps by Netflowers Inc.: https://appshunter.io/developer/1672067319

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*