NOAA

Data time: 4/11/2025 5:00 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	10	PPB
PM10	11	UG/M3
PM2.5	5.9	UG/M3

Historical Data Concentration

Hour	AQI	Class	Program	Responsible Pollutant	Activity Caution	Risk Groups
05:00	0	Good	SO2	SO2
05:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
05:00	9	Good	NO2	NO2	None	None
05:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
05:00	33	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
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	9	Good	NO2	NO2	None	None
04:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
04:00	27	Good	PM2.5	PM2.5	None	People with respiratory or heart disease, the elderly and children are the groups most at risk.
03:00	0	Good	SO2	SO2
03:00	1	Good	CO	CO	None	People with heart disease are the group most at risk.
03:00	6	Good	NO2	NO2	None	None
03:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
03:00	26	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	3	Good	NO2	NO2	None	None
02:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
02:00	24	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	2	Good	NO2	NO2	None	None
01:00	10	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.
01:00	24	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	9	Good	PM10	PM10	None	People with respiratory disease are the group most at risk.