Rockingham Co.

Data time: 12/21/2025 7:00 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	4	PPB
Ozone	27	PPB
PM10	8	UG/M3
PM2.5	4.4	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
07:00	0	Good	SO2	SO2
07:00	4	Good	NO2	NO2	None	None
07:00	25	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
07:00	7	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
07:00	24	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	23	Good	NO2	NO2	None	None
06:00	10	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
06:00	7	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
06:00	33	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	12	Good	NO2	NO2	None	None
05:00	12	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
05:00	7	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
05:00	27	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	14	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
04:00	7	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
04:00	26	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
03:00	12	Good	NO2	NO2	None	None
03:00	14	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
03:00	7	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
03:00	26	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	8	Good	NO2	NO2	None	None
02:00	22	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
02:00	7	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.