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Current Hourly Averages

Near Real-Time Air Quality Report for selected stations around Virginia.

Processed on Friday, August 17, 2018 15:11:06 EDT. Contents are updated once an hour.

Monitoring Site Temperature
°F
Humidity
% RH
Pressure
mbar
Solar Radiation
ly/min
Carbon Monoxide
(CO)
ppm
Sulfur Dioxide
(SO2)
ppb
Nitrogen Dioxide
(NO2)
ppb
Ozone
(O3)
ppb
Particulate Matter
(PM-2.5 Accept)
µg/m³ LC
Southwest Region
      Rural Retreat               48  
Valley Region
      Albemarle High School               43  
      Frederick Co. Public School Maint. Dept.               41 17.5
      Harrisonburg VDOT           -0.0 2.1 38  
      Natural Bridge Station               40  
Blue Ridge Region
      Herman L. Horn Elementary School         0.4 -0.4 1.8 40 16.7
Piedmont Region
      Beach Road VDOT               41  
      Bryan Park         0.4   6.6    
      Charles City County           -0.1 4.4 44  
      Hanover               55  
      MSIC (MathScience Innovation Center) 92.7   1011.0   0.3 0.2   46 15.5
Tidewater Region
      NASA Langley Research Center         0.3 1.1 2.3 45  
      NOAA Storage Facility         0.4 0.0 1.7    
      Tidewater Community College               38  
      VA Tech Agricultural Research Center               38  
Northern Region
      Ashburn - Broad Run High School             1.7 52  
      Aurora Hills Visitor Center         0.4   2.2 54  
      Fredericksburg Geomagnetic Observatory               38  
      Lee District Park - Fairfax County           0.4   45 14.6
      Long Park - Haymarket             1.5 49  
      Shenandoah National Park - Big Meadows               39 22.2
      Springfield Near Road Site         0.6   16.7    
      Sumerduck - C. Phelps Wildlife Mgmt Area               36  
      Widewater Elem. School - Widewater               38  
Monitoring Site Temperature
°F
Humidity
% RH
Pressure
mbar
Solar Radiation
ly/min
Carbon Monoxide
(CO)
ppm
Sulfur Dioxide
(SO2)
ppb
Nitrogen Dioxide
(NO2)
ppb
Ozone
(O3)
ppb
Particulate Matter
(PM-2.5 Accept)
µg/m³ LC
Note:
    N/A indicates data is not available.
    A blank space indicates the parameter is not measured at that monitoring site.

Key to PM-2.5 Highlight Colors:

The color-coding of the hourly PM-2.5 data is based on a 1-hour to 24-hour projection. This projection is based on statistics compiled over several years comparing the daily maximum 1-hour average to the midnight-to-midnight 24-hour average.
The table below shows the levels, color-coding, and suggested actions for both the 1-hour projection and the actual 24-hour standard.

Color Air Quality Rating 1-Hour
Average
(µg/m³)
24-Hour
Average
(µg/m³)
Actions to take
Moderate 20 - 99.9 12.1 - 35.4
  • No health impacts are expected when levels are within this range.
  • No special actions are required when levels are within this range.

PLEASE NOTE: This data has not been verified by the Virginia DEQ and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from Virginia DEQ ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.