funstuff.app
named after the FUNSTUFF folder on early 90's PC machines. you know the one.
DustyTrails
real-time air quality for Salt Lake City
DustyTrails is a real-time air quality map for Salt Lake City and the Wasatch Front. Mobile sensors show PM2.5, PM10 (dust), ozone, and NO₂ readings and more. This way ou see smoke and dust storms immediately as they happen, hours before the traditional fixed monitors update. It's like having a network of mini weather stations all around the city. Except they tell you when it's safe to breathe the air.
This is a personal project. I live in Salt Lake City and I breathe this air. It's not a startup. It's not a product. This is just something I wanted to exist.
powered by PurpleAir
Data Sources & Disclosures
Mobile & Fixed Sensors: Data courtesy of the Utah Division of Air Quality and the EPA AirNow program. Data are provided by federal, state, local, and tribal air quality agencies. This project is independent and not endorsed by the Utah DAQ, the University of Utah, or the EPA.
AirNow observational data are not fully verified or validated and are considered preliminary. Data are disseminated as received without alteration. Not for regulatory, medical, or emergency response use. Official regulatory data must be obtained from EPA's Air Quality System (AQS).
© 2026 funstuff.wtf. All rights reserved. This software is provided "as-is" without warranty of any kind. Air quality data is not quality-assured and is subject to change. This application has no university affiliation.
Terminal View
the same data, rendered for a CRT
Same sensor readings, tabulated. Updates live. This is what it looks like if your monitor is 80 columns wide and you think GUIs were a mistake.
Why Salt Lake City?
inversions, mountains, and mobile sensors
Salt Lake City has a unique air quality situation. The valley is surrounded by mountains on three sides (the Wasatch Range, the Oquirrhs, the Traverse Range) which trap inversions — cold air sinking into the valley and sitting there, accumulating pollution. Winter inversions are the worst. Some days the air quality in the valley is among the worst in the country while the mountains above are pristine.
The state of Utah and the University of Utah have invested in mobile sensor platforms — buses and trains that measure air quality as they move through the valley. This is unusual. Most cities only have fixed monitoring stations. The mobile sensors give a much more granular picture of what's happening block by block, hour by hour.
If your city has similar mobile air quality sensor programs and you'd like to see your data on a map like this, get in touch. I'd be interested in hearing about it.
Other funstuff
DustyTrails is the only thing here right now. More projects may show up eventually. Or not. It's a personal domain.