Rockingham Co.

Data time: 7/18/2025 6:00 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	4	PPB
Ozone	23	PPB
PM10	16	UG/M3
PM2.5	5.8	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
18:00	0	Good	SO2	SO2
18:00	4	Good	NO2	NO2	None	None
18:00	21	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
18:00	15	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
18:00	32	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
17:00	0	Good	SO2	SO2
17:00	6	Good	NO2	NO2	None	None
17:00	27	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
17:00	15	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
17:00	32	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
16:00	0	Good	SO2	SO2
16:00	5	Good	NO2	NO2	None	None
16:00	29	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
16:00	15	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
16:00	32	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	3	Good	NO2	NO2	None	None
15:00	30	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
15:00	15	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
15:00	31	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	1	Good	NO2	NO2	None	None
14:00	35	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
14:00	15	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
14:00	29	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	1	Good	NO2	NO2	None	None
13:00	27	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
13:00	16	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.