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Rockingham Co.

Data time: 4/12/2026 9:00 AM 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	1	PPB
Ozone	50	PPB
PM10	13	UG/M3
PM2.5	6.3	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
09:00	0	Good	SO2	SO2
09:00	1	Good	NO2	NO2	None	None
09:00	46	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
09:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
09:00	35	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
08:00	0	Good	SO2	SO2
08:00	3	Good	NO2	NO2	None	None
08:00	34	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
08:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
08:00	31	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
07:00	0	Good	SO2	SO2
07:00	8	Good	NO2	NO2	None	None
07:00	14	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
07:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
07:00	28	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
06:00	0	Good	SO2	SO2
06:00	10	Good	NO2	NO2	None	None
06:00	6	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
06:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
06:00	26	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
05:00	0	Good	SO2	SO2
05:00	8	Good	NO2	NO2	None	None
05:00	5	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
05:00	13	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
05:00	25	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
04:00	0	Good	SO2	SO2
04:00	10	Good	NO2	NO2	None	None
04:00	19	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
04:00	14	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.