iRhcp182 t1_jchgrcl wrote on March 16, 2023 at 9:22 PM

Reply to comment by I-seddit in Open-source tool from MIT’s Senseable City Lab lets people check air quality, cheaply. by chrisdh79

Around $450

iRhcp182 t1_jchgj8j wrote on March 16, 2023 at 9:20 PM

Reply to comment by GeoAtreides in Open-source tool from MIT’s Senseable City Lab lets people check air quality, cheaply. by chrisdh79

They are using the alphasense optical particle counter

iRhcp182 t1_jchf5ki wrote on March 16, 2023 at 9:11 PM

Reply to comment by UnderGrownGreenRoad in Open-source tool from MIT’s Senseable City Lab lets people check air quality, cheaply. by chrisdh79

What you see in your weather app is very different from what the city scanner shows. How air quality is usually measured is by using 5-6 fixed research grade sensors. The measurements from these stations are used plus some meteorological variables (wind speed+direction, relative humidity, temperature) to model air quality over a larger area. The city scanners however show that air quality can differ a factor 10 on a micro scale. Meaning that these models can wildly over or under estimate air quality at specific locations. These scanners are thus used to create a higher resolution air quality map.