CORONAVIRUS UPDATE: The library is closed effective Tuesday, March 24th. Continuing services will include: access to online materials; reference, class or research consultations; and assistance with securing expanded online access to curriculum-based and/or research materials. For more information see the Georgetown Libraries COVID-19 Updates and Resources page.
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These monitors measure dangerous particulate matter (PM2.5) as well as temperature and humidity, and transmit the data to the cloud in real time for storage and analysis. They are very low cost (~$75) and can be deployed in many locations to improve the understanding of how air quality varies over time and compares with various locations.