The map on the right shows concentrations of PM₂.₅ throughout a typical autumn day in Providence. Utilizing data from 23 monitors in 20 different neighborhoods, our team created a graphic of average PM₂.₅ concentrations across our network by hour. PM₂.₅ concentrations were typically higher at night through the early morning, reaching a peak at around 7:30 a.m. The pattern likely reflects locally-emitted and transported pollution as well as the influence of temperature and wind. Concentrations are typically lowest in the afternoon due to higher winds, which disperse pollutants, whereas the air is more stagnant at night.

Please be patient with this feature! Allow map 1 minute to load; however, it doesn’t always work. While you wait, check out another data visual below: a typical day of particulate matter (PM₂.₅) in Providence.

Below is an interactive map of Breathe Providence monitoring locations. Toggle between network-calibrated carbon dioxide (CO₂) and reference-calibrated carbon monoxide (CO) measurements throughout Providence. CO₂ concentrations have not been calibrated to a reference monitor; use this map to explore how sites differ in a relative sense, but the values here will not be accurate in an absolute sense. Some sensors (such as Child & Family on Eddy St.) have not yet had CO₂ calibrated and will appear to show extreme values.

Click on a monitoring location to explore measurements from the last day, week, month, and year. Daily concentrations may not be available (some sensors do not upload data in real-time), but please explore data from previous time periods. Don’t forget to see our Student Research Archive for descriptions of past student projects and links to our published work!