Sources of Weather Data for the Weather Observations Optional Assignment
(More sites coming as I find them, or as you find them and let me know about them)

UA Dept. of Atmospheric Sciences Current Campus Conditions Near the top of the page (in blue) you'll find the most recent measurements of
     temperature, dew point temperature,
     station pressure (not corrected to sea level altitude),
     current wind direction and wind speed.
Yesterday's high and low temperature are at the bottom of the page (in red)



National Weather Service Tucson Office
 scroll down below the Arizona map to find current measurements of
     temperature, dew point temperature, wind direction and wind speed

Click on the More Details (KTUS) link for hourly observations of
     temperature, dew point temperature, wind direction and wind speed,
     sea level pressure (millibars & inches of mercury), station pressure (inches of mercury)
     daytime high and low temperatures are shown at far right



UA Dept. Atmospheric Sciences 500 mb chart
 Interpolate between the contours that bracket Tucson. 
A 0 has been left off the contour values shown on the map. 
I.e. the 564 contour is actually the 5640 meter contour. 
Contours are drawn at 60 m intervals: ... 5520, 5580, 5640, 5700, 5760 ... etc