Franconia Park

Data time: 7/17/2026 8:00 PM ET

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

Air Quality Information
Pollutant	Concentration	Units of Measure
SO2	1	PPB
Ozone	58	PPB
PM10	201	UG/M3
PM2.5	86.1	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
20:00	1	Good	SO2	SO2
20:00	61	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
20:00	124	Unhealthy for Sensitive Groups	PM10	PM10	Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults.	People with respiratory disease are the group most at risk.
20:00	172	Unhealthy	PM2.5	PM2.5	Increased aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults; increased respiratory effects in general population.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
19:00	1	Good	SO2	SO2
19:00	84	Moderate	Ozone	Ozone	Unusually sensitive individuals may experience respiratory symptoms.	Children and people with asthma are the groups most at risk.
19:00	122	Unhealthy for Sensitive Groups	PM10	PM10	Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults.	People with respiratory disease are the group most at risk.
19:00	172	Unhealthy	PM2.5	PM2.5	Increased aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults; increased respiratory effects in general population.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
18:00	1	Good	SO2	SO2
18:00	112	Unhealthy for Sensitive Groups	Ozone	Ozone	Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with respiratory disease, such as asthma.	Children and people with asthma are the groups most at risk.
18:00	120	Unhealthy for Sensitive Groups	PM10	PM10	Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults.	People with respiratory disease are the group most at risk.
18:00	178	Unhealthy	PM2.5	PM2.5	Increased aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults; increased respiratory effects in general population.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
17:00	1	Good	SO2	SO2
17:00	150	Unhealthy for Sensitive Groups	Ozone	Ozone	Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with respiratory disease, such as asthma.	Children and people with asthma are the groups most at risk.
17:00	119	Unhealthy for Sensitive Groups	PM10	PM10	Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults.	People with respiratory disease are the group most at risk.
17:00	191	Unhealthy	PM2.5	PM2.5	Increased aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults; increased respiratory effects in general population.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
16:00	1	Good	SO2	SO2
16:00	161	Unhealthy	Ozone	Ozone	Greater likelihood of respiratory symptoms and breathing difficulty in active children and adults and people with respiratory disease, such as asthma; possible respiratory effects in general population.	Children and people with asthma are the groups most at risk.
16:00	116	Unhealthy for Sensitive Groups	PM10	PM10	Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults.	People with respiratory disease are the group most at risk.
16:00	197	Unhealthy	PM2.5	PM2.5	Increased aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults; increased respiratory effects in general population.	People with respiratory or heart disease, the elderly and children are the groups most at risk.
15:00	1	Good	SO2	SO2
15:00	101	Unhealthy for Sensitive Groups	Ozone	Ozone	Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with respiratory disease, such as asthma.	Children and people with asthma are the groups most at risk.
15:00	113	Unhealthy for Sensitive Groups	PM10	PM10	Increasing likelihood of respiratory symptoms in sensitive individuals, aggravation of heart or lung disease and premature mortality in people with cardiopulmonary disease and older adults.	People with respiratory disease are the group most at risk.