Air quality is a big deal. Not just for people with health issues surrounding their breathing, but to perfectly healthy people as well! If they want to stay healthy, they might choose to avoid polluted air as much as possible. Inhaling a great deal of smog and other toxins is just not a great way to live. The BreezoMeter is the online map that tells you how bad the air really is.
Lots of weather maps will tell you what the pollen is doing, which is great information for those of us that SUFFER with allergies. This map tells you what sort of toxic air waste is floating around out there and how bad it REALLY is.
You can swap between different emissions to get an idea of what the pollution is like in your surrounding area as well as an overall indicator of how the air quality is doing out there. You can use this tool for figuring out where the cleanest places in your local area are for an outdoor outing. Or to just decide if your biking to work or not that day. BreezoMeter is free to use.