air-quality
(4)
Perry Weather
Perry Weather is a Dallas-based weather safety and operations platform that pairs on-site weather stations with software to help organizations monitor lightning, heat stress (WBGT), and air quality, automate their safety policies, and keep a compliance-ready record. Founded in 2013 by meteorologist Colin Perry, it serves thousands of schools, cities, golf courses, athletic programs, and industrial firms - including work with the PGA of America - and has delivered tens of millions of real-time safety alerts.
Emisense Technologies
Emisense Technologies is a Ladera Ranch, California sensor company that builds PMTrac, an electrostatic particulate matter (ePM) sensor for measuring soot and ultrafine particles directly in the exhaust stream. Founded in 2009 by serial automotive-electronics entrepreneur Patrick Thompson, the company sells a low-cost, durable, in-situ alternative to lab-grade emissions instruments - aimed at automotive on-board diagnostics, generators, and industrial combustion. In 2025 it signed a global Tier-1 automotive supplier to industrialize the sensor, with serial production targeted for 2028.
Project Canary
Project Canary is a Denver-based climate-tech public-benefit corporation that turns methane and emissions data into operational intelligence for energy companies. It pairs high-fidelity continuous monitoring hardware (the EPA-approved Canary X sensor) with a cloud platform (SENSE) and independent well-level ESG ratings (TrustWell), helping oil & gas producers and natural gas utilities detect leaks, cut emissions, meet regulations, and prove the climate attributes of their gas.
Windmill
Windmill is a New York-based modern air care brand that redesigned the window air conditioner - and the unglamorous category around it - into sleek, app-connected, energy-efficient products. Founded by brothers Mike and Danny Mayer with third-generation AC expert Ryan Figlia, the company has expanded from a single quiet window unit into a full suite of air care: ACs, medical-grade HEPA air purifiers, fans, and subscription central air filters. With over 100,000 ACs sold and shelf space in Home Depot, Best Buy, and Lowe's, Windmill is betting that clean, comfortable air should look good and feel effortless.