Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out7576.473.474.875.875.08 F
Dew Temp35.640.732.7239.341.938.04 F
Humidity242823283026.6 %
Wind Speed1186.71047.9 mph
Wind Dir298348316.0324269Az=311
Pressure25.8225.8625.8825.825.98+0.33 inHg
Precip 00 0 No Precip
Time PST00:15:1800:15:1900:15:2000:15:1700:15:2000:15:20
KAIT inch Rain & Dew 07-14-2026 00:15:14 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 07-14-2026 00:15:19 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 07-14-2026 00:15:17 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 07-14-2026 00:15:20 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter215920990552520000:14:41
In per 0.24 liter26334129 00:08:07

Estimated combined 0.3+0.5um particles weight as of 07-14-2026 00:14:41 is 8 ug/m3
Estimated PM2.5 Air Quality Index is 81 Moderate , TSP is 102 Normal

120 Dome Floor Air Particles 07-14-2026 00:08:07 0.3 um=26334 0.5 um=129
Outside Air Particles by APF07-14-2026_00:14:41_0.3um=3449_0.5um=335_0.7um=144_1.0um=89_2.0um=40_3.0um=4_5.0um=0_10.0um=0_sc=2704903_fl=1.0_st=23_er=0_RH=24%_T=72.86F

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 8113 feet above MH & estimated cloud temp is -4 F