Good quality air is important. After all, everyone breathes. But dig a little deeper into the subject and most of what you find is what we don't know. Is air pollution produced by local traffic? Does it waft in on the breeze? Are there times when I really shouldn't go out for a run?In this talk I'll describe how you can build your own connected air quality sensor and get data from it. I'll touch on embedded devices the MQTT protocol, LoRa networking, Azure IoT Hub and Azure Functions, along with our Connected Humber effort to spread sensors over Humberside. And I'll even mention spider eggs and show off my "Air Quality Top Hat".