1. Home
  2. ☀️ Weather
  3. Thermo Diem
Thermo Diem

Thermo Diem

by Basic Function

3 ratings
19 reviews
🔧 Utilities
☀️ Weather
Free

Details

  • Released
  • Updated

Features

Developer

Basic Function
✨Promote your app ✨
Thermo Diem video #1 for iPhone
Thermo Diem screenshot #2 for iPhone
Thermo Diem screenshot #3 for iPhone
Thermo Diem screenshot #4 for iPhone
Thermo Diem screenshot #5 for iPhone
Thermo Diem screenshot #6 for iPhone
Thermo Diem screenshot #7 for iPhone
Thermo Diem screenshot #8 for iPhone
Thermo Diem screenshot #9 for iPhone
Thermo Diem screenshot #10 for iPhone
Thermo Diem screenshot #11 for iPhone
iphone
ipad
⭐19
Reviews↘︎
📝1+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦~ in 3 weeks
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This app compares current "feels like" temperatures to the previous day, offering a relative sense of warmth or coolness. It provides seven simple daily comparisons to help you understand how the weather feels.

✓Compares today's 'feels like' temperature to yesterday
✓Provides 7 relative temperature descriptions
✓Considers humidity, wind, dew points, and temperature
✓Designed for Apple Watch
✓Uses Forecast.io data
Show original description

What's New in Thermo Diem

3.5

October 5, 2026

What's New in Version 3.5: • Home Screen Quick Actions: Long-press (Haptic Touch) the app icon to jump to Tomorrow's Forecast, Nationwide Movers, or activate your Commute Live Activity. • Reliable Widget Scheduling: Improved background refresh cadence for Lock Screen and Home Screen widgets. • Tomorrow Outlook Polish: Smoother transitions and refined typography when previewing tomorrow's temperature shift. • Performance & Stability: Memory optimizations and background task reliability enhancements. • MacOS version • What's New in Version 3.4: • Commute Live Activity & Dynamic Island drive tracking. • Smart automatic background refresh scheduled before morning waking hours. • Deeper solar radiation and wind gust biometeorology modeling. • What's New in Version 3.3: • Multilingual support (Spanish, French, German). • Editorial headline grammar refinements ("About the same as yesterday"). • Streamlined city and US state abbreviation labels. • What's New in Version 3.2: • Nationwide Movers: Real-time leaderboard tracking the largest 24-hour temperature swings across the country. • Quick City Switcher to view any mover's climate delta. • Enhanced Apple Watch Ultra and Series contrast. • What's New in Version 3.1: • Interactive 24-hour horizon scrubber to compare future hours with yesterday. • Peak comparison toggle: "Same Time" vs. "Yesterday's High". • Dynamic high-contrast palettes for extreme shifts. • What's New in Version 3.0: • Complete ground-up redesign with bold Anton typography. • NOAA-grade biometeorological apparent temperature engine. • Native standalone Apple Watch app with gauge needles. • Modern Lock Screen and Home Screen widgets.

More

User reviews

Most RecentHighest RatedLowest Rated

Widget not current

After I click on widget, only then it updates to the current weather. This defeats the purpose of being able to glance at the widget and have current information.
JambalayafjjdchJambalayafjjdch

Julia

I love this app I really recommend it for people who are on the go because it is easy to see it right away and compare today and the next days temps guys get it!!!!!😭🙏
JjhhhyyuisnisJjhhhyyuisnis

3.2 is a Game Changer

Works on all of your devices
MickeyDeLoMickeyDeLo

apparently 90 is cooler than 78

For a while this app would always say “today is warmer” I kind of forgot about it until a couple days ago. The high was 78. The next day was in the mid 90s, yet the app kept saying “today is cooler”
Lindsbear19Lindsbear19

Always warmer

All this app ever tells me is that today will feel warmer than yesterday. Every day.
lydiajandlydiajand
See 14 more reviews

Developer apps

Hungry Lizards
Hungry Lizards

by Mickey DeLorenzo

🎮 Games
Free
See developer apps

FAQ

What does Thermo Diem compare?

Thermo Diem compares today's 'feels like' temperature to how it felt 24 hours ago. It takes into account factors like relative humidity, wind, dew points, and temperature to provide a relative sense of warmth or coolness.

How does Thermo Diem describe the temperature changes?

Thermo Diem provides seven simple outputs: Much Warmer, Warmer, Slightly Warmer, Similar, Slightly Cooler, Cooler, and Much Cooler. This offers a quick, relative understanding of the day's weather feel.

What data source does Thermo Diem use?

Thermo Diem utilizes data provided by Forecast.io, which is described as a highly accurate weather reporting service.

Is Thermo Diem available on other devices besides Apple Watch?

The description specifically highlights that Thermo Diem is designed for the Apple Watch, suggesting it is optimized for or primarily available on that platform.

What is the formula used by Thermo Diem?

Thermo Diem uses the formula AT = -2.7 + 1.04*T + 2.0*e -0.65*v, where AT and T are in degrees Celsius, e is vapor pressure in kPa, and v is 10m wind speed in m/sec.

How often is Thermo Diem updated?

The latest version, 2.1, was released on June 4, 2015. This indicates that updates may not be very frequent, with the last update being several years ago.

What is the user rating for Thermo Diem?

Thermo Diem has a rating of 1.5 stars based on 6 ratings. This suggests a generally negative user sentiment based on the limited feedback available.

Does Thermo Diem have ads?

The provided data does not specify whether Thermo Diem contains advertisements. However, it is a free application, which sometimes correlates with ad support.