Rest

Data time: 10/1/2026 11:00 AM ET

Monitoring Site

Location
Address:	Frederick Co. Public School Maintenance Dept.
Latitude:	39.28101
Longitude:	-78.08157
Region:	Valley

Air Quality Information
Pollutant	Concentration	Units of Measure
Ozone	46	PPB
PM10	26	UG/M3
PM2.5	7.7	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
11:00	43	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
11:00	24	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
11:00	43	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
10:00	34	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
10:00	24	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
10:00	45	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
09:00	16	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
09:00	23	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
09:00	47	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
08:00	8	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
08:00	24	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
08:00	47	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
07:00	2	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
07:00	25	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
07:00	47	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
06:00	18	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
06:00	25	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.