Big Meadows

Data time: 5/18/2026 5:00 PM ET

Monitoring Site

Location
Address:	Big Meadows, Shenandoah National Park
Latitude:	38.5228
Longitude:	-78.43487
Region:	Northern

Air Quality Information
Pollutant	Concentration	Units of Measure
Ozone	57	PPB
PM10	20	UG/M3
PM2.5	11.8	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
17:00	58	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
17:00	19	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
17:00	56	Moderate	PM2.5	PM 2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
16:00	61	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
16:00	18	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
16:00	56	Moderate	PM2.5	PM 2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
15:00	61	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
15:00	18	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
15:00	56	Moderate	PM2.5	PM 2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
14:00	58	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
14:00	17	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
14:00	55	Moderate	PM2.5	PM 2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
13:00	58	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
13:00	17	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
13:00	55	Moderate	PM2.5	PM 2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
12:00	58	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
12:00	16	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.