AMBIENT AIR MONITORING

The AQP operates and maintains three ambient air pollution monitoring sites - Sacaton, Casa Blanca, and St. Johns.  All three sites have meteorological stations (e.g., wind speed, temperature, humidity, etc.) and monitor for particulate matter less than or equal to 10 microns (PM10).  The Sacaton and St. Johns sites also monitor for ground level ozone from May through October.