More than hardware, the meticulously designed Tempest Weather System leverages our patented Nearcast Technology, a combination of curated weather data sets, machine learning, and state-of-the-art modeling capabilities. The result is a more accurate local forecast that only gets better over time. A revolutionary design with no moving parts, nearly zero maintenance, instant online data, and a rich API powering a growing list of third-party applications. Save time and money with smart home integrations, and protect your family and property with instant alerts to warn of rain, lightning, wind, and much more. Install the Tempest home weather system in less than five minutes, and it will do the rest!

Outdoor temp, humidity, dew point, feels like temp.
Wind speed, wind direction, average & gusts
Lightning activity (strikes and distance up to 25 miles)
Rain onset, intensity, duration, and accumulation
Wind chill, wet bulb temp, DeltaT, Air Density
UV index, brightness, solar radiation
Auto-calibration with Continuous Learning technology
Long-range wireless connectivity (1000ft)
Free iOS and Android apps & personal weather page
Works with Alexa, IFTTT, and more
Direct Rachio integration (code available via Tempest support)

A Better Forecast For Your Location
Our patented Nearcast Technology uses machine learning to compare your live station data against trusted data sources to ensure your station never drifts out of calibration. AI and data science techniques are used to improve the forecast for your exact location. No more guessing!
A Weather Station So Advanced, It's Simple
A revolutionary design with no moving parts, nearly zero maintenance, instant online data, a free personal webpage, and a rich API powering a growing list of third-party applications. Fully solar-powered, install the Tempest home weather system in less than five minutes.
Turn Your Smart Home Into a Genius
Use your weather data to save on heating and cooling, optimize your smart sprinkler controller, alert your family to approaching storms, and more. Tempest is compatible with Rachio, IFTTT, Siri, Alexa, Homey, and many more.
Tempest's Commitment to You
We stand behind our products and the technology that powers them. Each Tempest comes with a 60-day return policy, and if you aren't blown away by the better forecast in the first 2 months, simply return it. Enjoy stress-free shopping with a company committed to customer happiness.

Here are just some of the ways to use weather observation and forecast data from the Tempest System with your smart home:
Adjust your irrigation schedule based on the rain that's fallen... or the rain that's forecast to fall
Turn on attic exhaust fans if the temperature is high
Turn on ceiling fans if the temperature is high
Turn on whole house attic fan & turn off the AC if the outside temperature is cooler than inside
Turn on outside accent lighting when light level falls below a set limit
Turn on an engine block heater on work days when the outside temperature is close to freezing
Adjust heating/cooling levels based on the temperature and humidity forecast
Adjust indoor lighting levels based on outdoor sunlight levels
Adjust awning and shade positions based on ambient light, solar radiation, wind, etc
In addition to direct integration with your smart home systems, there's also a growing list of devices and software that let you do all sorts of things with the data from your Tempest System. Tempest exposes a collection of self-service APIs and documentation that make it easy for developers to build apps and integrations that access data on behalf of a Tempest station owner. With both remote access (via REST & Web Socket) and local access (via Bluetooth Low Energy, UDP Broadcast).
Tempest Specs Air Temperature -40°F to 140° F
Relative Humidity 0-100%
Atmospheric Pressure Up to 1100 mbar
Lightning Activity Detects lightning 0 to 25 miles away
Wireless Up to 1000 ft
Wind Speed 0 to 100 mph
Wind Direction 0 to 359°
Ambient Light 1 to 128 kLUX
UV Index 0 to 14 Index
Solar Irradiance 0 to 1900 W/m2
Rain Onset First Drops
Rain Duration Daily total
Rain Accumulation Daily total
Mount Adjustable pole mount or screw mount
Power Solar powered