Best HomeKit Humidity Sensors iMore 2020

Maintaining a perfect balance of humidity in the home is a tricky ordeal. Humidifiers and de-humidifiers are available to help, but not truly knowing your home's climate may lead to high or low levels of moisture. Thankfully, HomeKit and Siri-enabled sensors are here to assist you in the battle, so here's our guide to help you decide which is the right one for your needs.

Motion without a hub: Onvis SMS1 Smart Motion Sensor

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The Onvis SMS1 Smart Motion Sensor packs in humidity, temperature, and motion-sensing all in one awesome little package. The SMS1 uses two AAA batteries, and connects to HomeKit via Bluetooth 5, skipping the need for an additional hub. This direct-to-HomeKit approach means you can monitor your home's humidity in a matter of minutes, and it can even work without a home network, which makes it perfect for travel.

$26 at Amazon

Affordable alternative: Aqara Smart Home Temperature Sensor

Despite being named after its temperature sensing ability, the Aqara Smart Home Temperature Sensor also keeps tabs on humidity. This sensor uses a Zigbee radio for connectivity to the Aqara Smart Home Hub, which not only helps with speed and reliability but also allows it to come in at an affordable price. These sensors are also incredibly tiny, keeping them neatly out of sight.

$19 at Amazon

One of five: iHome 5-in-1 Smart Monitor

As its name suggests, the iHome 5-in-1 Smart Monitor includes five smart home capabilities, including humidity. iHome's monitor also includes temperature, motion, light, and sound sensors, which can tie into HomeKit automations and scenes or with the iHome Connect app. Unlike other sensors, this one isn't portable, but it does have a handy display, which shows you the status of your home 24/7.

$30 at Amazon

Go outdoors: Eve Degree

The Eve Degree is the only HomeKit sensor around that can report humidity and temperature both indoors and out. This beautiful sensor has an IPX3 weather-resistant rating, allowing it to act as your own personal weather station when it is outdoors, giving you a more accurate picture of the temperature around you. For the indoors, the Eve Degree includes a non-obtrusive LCD display.

$62 at Amazon

Eggscellent air: Kaiterra Laser Egg + CO2

In addition to temperature and humidity sensors, the Kaiterra Laser Egg + CO2 includes carbon dioxide and air quality monitoring, providing actionable information to help you correct issues as they arise. This sensor is also completely portable, with a built-in rechargeable battery that allows you to move freely from room to room, all while keeping tabs on your surroundings.

$200 at Amazon

For the nursery: Arlo Baby

While Arlo's Baby camera is meant for the nursery, its incredible feature set makes it perfect for just about anywhere. The Arlo Baby features humidity, temperature, and air quality sensors, as well as a built-in nightlight and rechargeable battery, making it highly capable for its price. Oh yeah, it also includes a 1080p video camera that connects to HomeKit which enables notifications and two-way audio.

$137 at Amazon

Climate control

Adding a HomeKit humidity sensor is one of the best ways to start the journey toward a better home environment. These sensors enable you to summon the current conditions through the Home app, or through Siri, at any time of the day. Best of all, these sensors can work together with other HomeKit accessories, such as smart plugs, to automatically turn on a humidifier when things start to dry out, through the power of automation.

If you want to keep an eye on humidity, but don't want to add any additional hubs, then take a look at the Onvis SMS1 Smart Motion Sensor. The SMS1 connects directly to your iOS devices and HomeKit through Bluetooth, making it ready to go right out of the box.

Looking for a sensor that incorporates air quality monitoring in addition to humidity? Then check out the Kaiterra Laser Egg + CO2. This handy sensor measures fine particulates in the air, as well as carbon dioxide levels, giving you all the tools to get your home's climate under control.

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