Franconia Park

Data time: 7/31/2026 9:00 PM ET

Location
Address:	Lee District Park
Latitude:	38.77335
Longitude:	-77.10468
Region:	Northern

Air Quality Information
Pollutant	Concentration	Units of Measure
SO2	0	PPB
Ozone	45	PPB
PM10	11	UG/M3
PM2.5	6.7	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
21:00	0	Good	SO2	SO2
21:00	42	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
21:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
21:00	37	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
20:00	0	Good	SO2	SO2
20:00	45	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
20:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
20:00	41	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
19:00	0	Good	SO2	SO2
19:00	48	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
19:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
19:00	44	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
18:00	0	Good	SO2	SO2
18:00	50	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
18:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
18:00	43	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	50	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
17:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
17:00	41	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	45	Good	Ozone	Ozone	None	Children and people with asthma are the groups most at risk.
16:00	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.