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TIMBERLINE STATION Note: Rollover or click on underlined text for more information.
The Timberline Station is located in the mountains above Makakilo.
The coordinates of the site are: 21 degrees 22 minutes 37.2 seconds north and
158 degrees 6 minutes 44.6 seconds west.
Current Hourly Data (04/16/2024  19:00 to 20:00 HST):
Parameter Value Air Quality Index
Sulfur Dioxide (1-hr ave) 7 ppb Good (10)
Ozone (8-hr ave) 34 ppb Good (31)
Carbon Monoxide (8-hr ave) 0.3 ppm Good (3)
Particulate (PM10 24-hr ave) 11 ug/m3 Good (10)
Particulate (PM2.5 24-hr ave) 4 ug/m3 Good (17)
Nitrogen Dioxide (1-hr ave) 11 ppb Good (10)
Nitric Oxide (1-hr ave) 0 ppb See note
Nitrogen Oxides (1-hr ave) 11 ppb See note
Sulfur Dioxide (24-hr ave) 2 ppb See note
Sulfur Dioxide (3-hr ave) 6 ppb See note
Ozone (1-hr ave) 22 ppb See note
Carbon Monoxide (1-hr ave) 0.3 ppm See note
Particulate (PM10 1-hr ave) 17 ug/m3 See note
Particulate (PM2.5 1-hr ave) 4 ug/m3 See note
Wind Speed (1-hr ave) 2 mph  
Wind Direction (1-hr ave) SSE  
Temperature (1-hr ave) 67 deg F  
Precipitation (1-hr total) 0.00 inches  
Precipitation (24-hr total) 0.00 inches  
A DISCLAIMER: The data on this web site are preliminary and await review and validation by qualified staff.  The data may be revised or invalidated after review.  Every effort is made to assert the validity and integrity of the real-time data displayed on this web site, but data can be affected by equipment malfunctions, technical difficulties and other unforeseen circumstances.