NOAA

Data time: 7/3/2025 4:00 AM ET

Monitoring Site

Location
Address:	NOAA Storage Facility
City:	Norfolk
Latitude:	36.85555
Longitude:	-76.30135
Region:	Tidewater

Air Quality Information
Pollutant	Concentration	Units of Measure
SO2	0	PPB
CO	0.1	PPM
NO2	7	PPB
PM10	13	UG/M3
PM2.5	3.9	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
04:00	0	Good	SO2	SO2
04:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
04:00	7	Good	NO2	NO2	None	None
04:00	12	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
04:00	22	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
03:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
03:00	2	Good	NO2	NO2	None	None
03:00	13	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
03:00	21	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
02:00	0	Good	SO2	SO2
02:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
02:00	1	Good	NO2	NO2	None	None
02:00	13	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
02:00	21	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
01:00	0	Good	SO2	SO2
01:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
01:00	14	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
01:00	21	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
00:00	0	Good	SO2	SO2
00:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
00:00	1	Good	NO2	NO2	None	None
00:00	14	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
00:00	20	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
23:00	0	Good	SO2	SO2
23:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
23:00	3	Good	NO2	NO2	None	None