Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out61.46160.4459.26260.8 F
Dew Temp-6.611.36.981813.78.67 F
Humidity61412201513.4 %
Wind Speed938.1265.6 mph
Wind Dir117316118.014472Az=105
Pressure25.982626.0225.9526.27+0.47 inHg
Precip 00 0 No Precip
Time PST02:19:2902:19:2902:19:3002:19:2902:19:2902:19:29
KAIT inch Rain & Dew 01-13-2026 02:19:26 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 01-13-2026 02:19:29 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 01-13-2026 02:19:29 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 01-13-2026 02:19:29 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter78360226200002:14:52
In per 0.24 liter39430 01:58:21

Estimated combined 0.3+0.5um particles weight as of 01-13-2026 02:14:52 is 2 ug/m3
Estimated PM2.5 Air Quality Index is 6 Good , TSP is 8 Normal

120 Dome Floor Air Particles 01-13-2026 01:58:21 0.3 um=394 0.5 um=30
Outside Air Particles by APF01-13-2026_02:14:52_0.3um=1252_0.5um=96_0.7um=36_1.0um=10_2.0um=4_3.0um=0_5.0um=0_10.0um=0_sc=13768941_fl=1.0_st=23_er=0_RH=16%_T=58.1F

Out Particle Warning 0.24/L 0.3:21400 0.5:1750 0.7:650 1.0:400 2.0:130 3.0:60 5.0:18 10.0:2
Out Particle Closure 0.24/L 0.3:30600 0.5:2500 0.7:2000 1.0:1200 2.0:400 3.0:180 5.0:60 10.0:3
In Particle Warning 0.24/L 0.3:12000 0.5:980 In Particle Closure 0.24/L 0.3:17000 0.5:1400
Davis40 precip = rain rate * 0.01"/Hr Davis120 precip = 120" teles dew sensor 0=dry 100=wet closure~>15
Avg pressure = deviation 0.01 X in Hg from MH normal - VaisaAPF precip 0=norain 1=rain
If clouds visible overhead: estimated cloud base is at 11295 feet above MH & estimated cloud temp is -51 F