DoE operates and monitors rainfall (precipitation) gauges in the Anacostia River and Western Branch Watersheds which fall in the north and central County. The nearest County operated gauge to Ft. Washington is at Water Street in Upper Marlboro. Private entities like Weather Underground and Weather Bug collect rainfall data in the Ft. Washington area.
EPA establishes national ambient air quality standards (NAAQS) for six common air pollutants - carbon monoxide, lead, ground-level ozone, particulate matter, nitrogen dioxide, and sulfur dioxide. (Awaiting MWCOG confirmation of the status of (non)attainment status for Washington metropolitan region).