Rockingham Co.

Data time: 4/30/2026 5:00 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	17	PPB
Ozone	3	PPB
PM10	10	UG/M3
PM2.5	4.7	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
05:00	0	Good	SO2	SO2
05:00	16	Good	NO2	NO2	None	None
05:00	3	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
05:00	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
05:00	26	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	8	Good	NO2	NO2	None	None
04:00	9	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
04:00	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
04:00	24	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
03:00	0	Good	SO2	SO2
03:00	8	Good	NO2	NO2	None	None
03:00	12	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
03:00	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
03:00	25	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
02:00	0	Good	SO2	SO2
02:00	11	Good	NO2	NO2	None	None
02:00	7	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
02:00	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
02:00	26	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
01:00	0	Good	SO2	SO2
01:00	15	Good	NO2	NO2	None	None
01:00	0	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
01:00	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
01:00	24	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
00:00	0	Good	SO2	SO2
00:00	15	Good	NO2	NO2	None	None
00:00	6	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
00:00	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.