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TRAX Air Quality Observation Project (Blue Line)

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  • Principal Investigators: Daniel Mendoza, Logan Mitchell, John Horel, John Lin (UU)
  • Study Period: 1 July 2019 – 30 June 2020
  • Funded by legislative appropriation: $44,000
  • DAQ Contact: Chris Pennell (cpennell@utah.gov)

Four years ago, the TRAX air quality project deployed instruments to measure fine particulate matter (PM2.5) on two of the Utah Transit Authority light rail lines. These measurements represent the first time public transit has been used to monitor pollution in North America, and these measurements have been instrumental in understanding the spatial distribution of ozone and PM2.5 within the Salt Lake Valley.

This year, the TRAX study seeks to expand their measurement network to include the Blue line, which will augment their real-time data website and expand the coverage of TRAX within the Salt Lake Valley. Additional data quality controls will also be added this year. The data will continue to be available in near real-time at the TRAX website.

TRAX air quality instruments are now on the Red Line, Green Line, and Blue Line, offering extended coverage of the Salt Lake Valley and more real-time data.

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