The hottest new apocalypse preparation choice for 2019 is not a bunker or a gun or a lifeboat. And it’s not moving to New Zealand. It’s a small gadget that measures the air pollution around you.

As climate change reports become increasingly dire, and as wildfires tear across the American West, and as trust in the federal government’s air quality oversight fades, thousands of people around the country are taking air measurements into their own hands.

Installed on a porch, a console table or hooked to a backpack, these small, sleek and increasingly inexpensive devices measure hyper-local air quality. They are marketed to the discerning and alarmed consumer. Some have begun to self-identify as “breathers.”

Read more: Do You Know What You’re Breathing?