Air Quality Index

Source: Texas Commission on Environmental Quality, Center for Houston’s Future, Houston Clean Air Network (Ozone viewer)

This indicator provides a measure of community health and well-being, as well as environmental health. The indicator identifies the percentage of days for which air quality was monitored and found to be unhealthy, either for sensitive groups, such as people with asthma, or the community as a whole. An air quality index indicator summarizes levels of ground-level ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide in one measure.

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