Crowdsourced air monitoring data showing alarming numbers

Purple Air, a crowdsourcing-based air monitoring system, is consistently showing numbers more alarming than the federal government's. We break down how it works

SAN FRANCISCO (KGO) -- As crowdsourcing-based air quality continues to plague the Bay Area, a Utah-based company is suddenly thrust into the spotlight.

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Purple Air is a crowdsourcing-based air monitoring system-- with numbers that have been consistently more alarming than the federal government's.

There are about 600 of the sensors in the Bay Area monitoring the air quality.

Check current Bay Area air quality levels here.

Watch the video above for a closer look at Bay Area air quality conditions.

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