Kickstart environmental monitoring project

From NPR podcast recorded 2013.
Not Your Grandpa's RV: This Roving Lab Tracks Air Pollution
Atmospheric scientist Ira Leifer installed special air sensors on a camper, then drove from Florida to California, measuring methane levels all along the way. More than 6,000 readings later, he found some noticeable spikes, especially around petrochemical
Kickstart a self-containted device that would only require power and wifi.  The box would have monitoring equipment inside.

Cost?
How delicate are the instruments?  Will end user damage the calibration?
If the cost is too high or instruments too delicate for home use, put a solar cell on the unit, add batteries, and sell to pipelines and drillers and state regulatory monitoring groups.  The pipelines would save money from fixing leaking gas.

    Measure:
methane and possibly other gases
temperature
humidity