ASOS Acting Strange

Weather Conditions for:

Tucson, Tucson International Airport, AZ (KTUS)
Elev: 2546 ft; Latitude: 32.13153; Longitude: -110.95635

Current time:	Tue, 18 Jun 5:09 pm (MST)
Most Recent Observation:	Tue, 18 Jun 4:53 pm MST (MST)

Time Temp. Dew Relative Wind Wind Point Humidity Direction Speed (MST) (f) (f) (%) (mph) 18 Jun 4:53 pm MST 104 -15 1 W 13G18 18 Jun 3:53 pm MST 104 -15 1 W 13G21 18 Jun 2:53 pm MST 104 0 2 SSW 8G20 18 Jun 1:53 pm MST 104 -28 1 SW 12 18 Jun 12:53 pm MST 104 1 2 WSW 15G23 18 Jun 11:53 am MST 101 14 4 VRBL 3 18 Jun 10:53 am MST 97 19 6 CALM 18 Jun 9:53 am MST 94 20 7 CALM

ASOS may be having some heat stress - temps have gone flat and dewpoint is jumping around - note the -28 F value observed a bit before 2 pm.

Edited to add atmo time series: Things are very noisy at atmo too.