Bryan Park

Data time: 12/29/2025 9:00 PM ET

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
21:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
21:00	2	Good	NO2	NO2	None	None
21:00	9	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
20:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
20:00	2	Good	NO2	NO2	None	None
20:00	8	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
19:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
19:00	3	Good	NO2	NO2	None	None
19:00	8	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
18:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
18:00	3	Good	NO2	NO2	None	None
18:00	8	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
17:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
17:00	2	Good	NO2	NO2	None	None
17:00	7	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
16:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
16:00	2	Good	NO2	NO2	None	None