Rockingham Co.

Data time: 4/29/2026 4:00 PM ET

Location
Address:	Harrisonburg VDOT
Latitude:	38.47753
Longitude:	-78.80952
Region:	Valley

Air Quality Information
Pollutant	Concentration	Units of Measure
SO2	0	PPB
NO2	2	PPB
Ozone	21	PPB
PM10	12	UG/M3
PM2.5	3.6	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
16:00	0	Good	SO2	SO2
16:00	2	Good	NO2	NO2	None	None
16:00	19	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
16:00	11	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
16:00	20	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
15:00	0	Good	SO2	SO2
15:00	2	Good	NO2	NO2	None	None
15:00	19	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
15:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
15:00	26	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
14:00	0	Good	SO2	SO2
14:00	2	Good	NO2	NO2	None	None
14:00	19	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
14:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
14:00	28	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
13:00	0	Good	SO2	SO2
13:00	2	Good	NO2	NO2	None	None
13:00	20	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
13:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
13:00	34	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
12:00	0	Good	SO2	SO2
12:00	2	Good	NO2	NO2	None	None
12:00	19	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
12:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
12:00	44	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
11:00	0	Good	SO2	SO2
11:00	4	Good	NO2	NO2	None	None
11:00	19	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
11:00	13	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.