CanAirIO is a citizen science project to measure air quality (Particle Material PM2.5) using low cost sensors, cell phones (mobile measurement) or your wifi (static measurements) with low-cost technology and open source code. We are looking to build a citizen network, an air quality map that will allow us to know what we are breathing and how we can improve life quality. With the data collected we could independently validate official air quality numbers, because what can be measured can be improved. With our app and a CanAirIO device you can track air quality in your area and in other areas: https://play.google.com/store/apps/details?id=hpsaturn.pollutionreporter&hl=es You can also build your own CanAirIO device and generate your own air quality reports. You can share widely your reports and those from other users. You can visit our webpage with the fixed measurementes thath are public and open data: http://influxdb.canair.io:8000/d/xRQpZACWk/static-stations?orgId=1&refresh=10s We have held four workshops so far. In a few hours you can build and start running your CanAirIO device. You don’t need previous training in programming or electronics, just to be willing to learn. You can also do it at home, following our Wiki tutorial: https://github.com/kike-canaries/esp32-hpma115s0/wiki/Official-Guide-(EN) You don’t need to be an engineer to get involved. If you can draw, write or if you and your company or group of friends want to live in a healthy city, you can get involved. Together we can promote actions to improve air quality. https://canair.io/