Rockingham Co.

Data time: 9/16/2025 3:00 AM ET

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

Air Quality Information
Pollutant	Concentration	Units of Measure
NO2	24	PPB
Ozone	11	PPB
PM10	24	UG/M3
PM2.5	10.2	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
03:00	23	Good	NO2	NO2	None	None
03:00	10	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
03:00	22	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
03:00	53	Moderate	PM2.5	PM2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
02:00	0	Good	SO2	SO2
02:00	19	Good	NO2	NO2	None	None
02:00	12	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
02:00	22	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
02:00	54	Moderate	PM2.5	PM2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
01:00	0	Good	SO2	SO2
01:00	0	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
01:00	22	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
01:00	55	Moderate	PM2.5	PM2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
00:00	0	Good	SO2	SO2
00:00	33	Good	NO2	NO2	None	None
00:00	0	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
00:00	21	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
00:00	52	Moderate	PM2.5	PM2.5	Respiratory symptoms possible in unusually sensitive individuals, possible aggravation of heart or lung disease in people with cardiopulmonary disease and older adults.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
23:00	0	Good	SO2	SO2
23:00	28	Good	NO2	NO2	None	None
23:00	21	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
22:00	0	Good	SO2	SO2
22:00	12	Good	NO2	NO2	None	None
22:00	7	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.