WetBulbCast
Weather
Free
WetBulbCast shows forecasts of wet-bulb temperature to check whether your swamp cooler will work well for you.
Is it a good day for your swamp cooler?
Your evaporative (swamp) cooler cannot cool the air it blows into your house to below the wet bulb temperature — and how well they work depends almost entirely on one number: the wet-bulb temperature. When it's low, your cooler can drop indoor temperatures dramatically and cheaply. When it's high, running it barely helps.
What you get
:
• Wet-bulb temperature — the single most important number for swamp cooler effectiveness, shown for every hour of the next 10 days
• Dew point — a direct measure of how much moisture is already in the air
• Feels-like temperature — so you know what it's actually like outside, not just what the thermometer says
• 10-day hourly forecast — plan your cooler schedule days ahead and whether you may need AC instead
• UV index, wind speed, precipitation probability, and cloud cover — the full picture in one compact table
• Interactive chart — visualize temperature, wet-bulb, and dew point trends at a glance
• Multiple saved locations — check your home, office, or any place you care about
Powered by Apple Weather
WetBulbCast uses Apple's WeatherKit for accurate, hyperlocal forecasts updated throughout the day.
Ratings & Reviews
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The developer, Rob Boer, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rob Boer
- Size
- 11.6 MB
- Category
- Weather
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Rob Boer, GNU GPL v3