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Big Bend National Park

  • View of Sierra del Carmen in Mexico
    From the Northwest
  • Air Data
    & Weather
  • NPS Air
Visual Range is about 78 miles •
View from XXXX Looking DIRECTION
Ozone(O3) at K-Bar Ranch Monitoring Site  updated 07/29/2014 06:00 AM ST

O3 concentration Current Today's
8-hour average 36 ppb 39 ppb   40 ppb  
1-hour average 36 ppb 38 ppb   45 ppb  

*Ozone (O3) is measured in parts per billion (ppb)

AQI Ozone

Weather at K-Bar Ranch Monitoring Site updated 07/29/2014 06:00 AM ST

Current temperature  78 F 
Yesterday's minimum temperature  79 F 
Yesterday's maximum temperature  94 F 
Current relative humidity  44 % 
Yesterday's minimum relative humidity  23 % 
Yesterday's maximum relative humidity  45 % 
Current wind speed  7 mph  
Current wind direction S
Current solar radiation  551 watts/m 2 
Precipitation in last hour  0.00 in. 
Precipitation since midnight  0.00 in. 
Yesterday's precipitation  0.00 in. 

Visibility  updated 07/29/2014 05:00 AM ST

Approximate Visual Range
Current Yesterday's
  78 miles 89 miles 54 miles

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Current Air Quality »
at K-Bar Ranch
Ozone - O3
updated 07/29/2014 06:00 AM ST
Ozone concentration is ***O3*** parts per billion air quality index (AQI) for Ozone and Particulate Matter from good to unhealthy
Current Weather »
at K-Bar Ranch
updated 07/29/2014 06:00 AM ST
78 F

44 %

S-7 mph

Precipitation - 1 hr
0 in.

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    Last Updated: July 29, 2014