---
title: "WetBulbCast - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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 "
---

# WetBulbCast — United States
> Forecasts with wet bulb temp.

![WetBulbCast App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/c4/1c/49/c41c49e3-35af-fda7-80b1-155a8f804a9e/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Rob Boer](https://apptail.io/developer/rob-boer-eiOwhc)
**Category:** Weather
**Rating:** 5.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** robotex.weather-wetbulb
**Store:** Apple App Store
**Country:** United States
**Version:** 1.2 (released 2026-09-08)
**Original Release:** 2026-05-06
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6761316594)
**AppTail Page:** [https://apptail.io/app/wetbulbcast-tUHz/united-states](https://apptail.io/app/wetbulbcast-tUHz/united-states)

## WetBulbCast Description
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.

## WetBulbCast Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/93/23/18/9323187f-9f3b-333f-aaaa-121e0df837af/iPhone17ProMax-1-24hour.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/cc/56/9a/cc569a4e-a95a-8d14-e466-742a6a5bafac/iPhone17ProMax-2-10day.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fa/e2/a4/fae2a455-513f-e820-429d-f2cdac8e65e9/iPhone17ProMax-4-settings.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/3f/8e/35/3f8e35d4-708e-f0dd-2875-ce24f8f99a7c/iPhone17ProMax-6-places.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b5/25/cc/b525cc1f-3431-9d2a-2d81-27e9ede7e1b0/iPhone17ProMax-5-info.png/1320x2868.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f9/67/22/f96722ab-b110-cc0f-1456-b301140d2e1e/iPhone17ProMax-3-table.png/1320x2868.png)

## WetBulbCast Rating Breakdown in United States
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## WetBulbCast Reviews in United States

### ***** "Accurate, and excellent"
This app calculates wetbulb correctly, has excellent by the hour forecasts, zero ads, and it’s fast and it’s free! The interface is a little clunky, but that’s more than a fair trade for the display of so much useful information.

I had the “Heat Safety” app previously, which absolutely blew the wetbulb calculation. Heat Safety is not recommended. 

Big thanks to the creator for making this available for free.
-- KMasonS, 2026-07-01

[View all WetBulbCast reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)




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## WetBulbCast Available In
- [United States](https://apptail.io/app/wetbulbcast-tUHz/united-states)
- [Armenia](https://apptail.io/app/wetbulbcast-tUHz/armenia)
- [Canada](https://apptail.io/app/wetbulbcast-tUHz/canada)
- [United Kingdom](https://apptail.io/app/wetbulbcast-tUHz/united-kingdom)
- [India](https://apptail.io/app/wetbulbcast-tUHz/india)

---

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