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BRAVO Big Bend C67/C316/C656/C691
Find Site:       
  • EPA site number: 48-043-0101
  • State: Texas
  • County: Brewster
  • City: Big Bend Nat Park
  • Address: Big Bend National Park
  • Site coordinates:
    • Latitude: 29° 18' 9.19" North (+29.302552°)
    • Longitude: 103° 10' 40.47" West (-103.177908°)
    • Elevation: 1057 m (3468 ft)
  • Maintained by: National Park Service for the TCEQ
Area Map Overall site view Street level Map
Northwest North Northeast
West
East
Southwest South Southeast
CAMS Data
Current Measurements
Monthly Summary Report
Yearly Summary Report
  • Real-time monitoring since: Wednesday, May 5, 1999
  • Current status: Active
  • Continuous monitors located at this site:
    • Met Data
    • Fine Particulates (PM-2.5)
  • Parameters currently being monitored:
    • Pollution parameters:
      • PM-2.5 (Local Conditions)
    • Meteorological parameters:
      • Wind Speed
      • Resultant Wind Speed
      • Resultant Wind Direction
      • Maximum Wind Gust
      • Standard Deviation of Horizontal Wind Direction
      • Outdoor Temperature
  • Parameters that have been monitored but are no longer active:
    • Pollution parameters:
      • Nephelometer B sp - 520 nanometers (green light band)
      • Nephelometer Visibility SVR-IMPROVE (km)
      • Nephelometer Visibility SVR-IMPROVE (miles)
      • Sulfur Dioxide
      • Nitric Oxide
      • Nitrogen Dioxide
      • Oxides of Nitrogen
      • Ozone
      • PM-2.5 (Local Conditions) Acceptable
    • Meteorological parameters:
      • Wind Speed
      • Resultant Wind Speed
      • Resultant Wind Direction
      • Maximum Wind Gust
      • Standard Deviation of Horizontal Wind Direction
      • Outdoor Temperature
      • Dew Point Temperature
      • Delta Temperature
      • Relative Humidity
      • Solar Radiation
      • Precipitation

PLEASE NOTE:  This data has not been verified by the TCEQ 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 TCEQ 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.

Following EPA reporting guidelines, negative values may be displayed in our hourly criteria air quality data, down to the negative of the EPA listed Method Detection Limit (MDL) for the particular instrument that made the measurements. The reported concentrations can be negative due to zero drift in the electronic instrument output, data logger channel, or calibration adjustments to the data. Prior to 1/1/2013, slightly negative values were automatically set to zero.