Public Exposure Map

Exposure measurements by region

Regions are coloured where this exposure has been measured in enough distinct participants to protect privacy. Regions without enough data simply do not appear — absence on this map does not mean an exposure is absent there.

Measurement type

All catalogued exposures

Back to all exposures

Regions are coloured by their measured particulate air quality (EPA AQI band). Click a region for the per-particle-size breakdown, the numeric range it falls under, and how it compares to each health reference.

Exposure category

Filter the regional top 10 by category. Open a region to see its individual exposures.

This map is a research surface, not a diagnostic or safety tool. Colour reflects relative measured levels (or absolute EPA Air Quality Index bands for air quality), never a verdict for any individual or address.