Big Meadows

Data time: 2/20/2026 9:00 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	54	PPB
PM10	4	UG/M3
PM2.5	1.4	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
21:00	50	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
21:00	4	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
21:00	8	Good	PM2.5	PM 2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
20:00	48	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
20:00	4	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
20:00	7	Good	PM2.5	PM 2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
19:00	46	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
19:00	4	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
19:00	7	Good	PM2.5	PM 2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
18:00	44	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
18:00	4	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
18:00	9	Good	PM2.5	PM 2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
17:00	44	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
17:00	3	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
17:00	12	Good	PM2.5	PM 2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
16:00	49	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
16:00	3	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.