Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out60.461.55960.761.860.68 F
Dew Temp-7.38.27.3420.417.79.26 F
Humidity61213211814 %
Wind Speed16227.815413.0 mph
Wind Dir3619358.036069Az=24
Pressure26.0326.0726.0926.0126.37+0.54 inHg
Precip 00 0 No Precip
Time PST19:20:2119:20:2119:20:2219:20:2219:20:2119:20:22
KAIT inch Rain & Dew 03-11-2026 19:20:21 No Rain rainint= 3% outdew= 1% indew= 0%
120 inch Rain & Dew 03-11-2026 19:20:21 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-11-2026 19:20:22 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 03-11-2026 19:20:21 No Rain rainint= 0% outdew= 17% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter33184082101132930019:12:59
In per 0.24 liter1968234 19:10:38

Estimated combined 0.3+0.5um particles weight as of 03-11-2026 19:12:59 is 14 ug/m3
Estimated PM2.5 Air Quality Index is 94 Moderate , TSP is 135 Normal

120 Dome Floor Air Particles 03-11-2026 19:10:38 0.3 um=1968 0.5 um=234
Outside Air Particles by APF03-11-2026_19:12:59_0.3um=5301_0.5um=653_0.7um=336_1.0um=182_2.0um=47_3.0um=6_5.0um=1_10.0um=1_sc=18753932_fl=1.0_st=23_er=0_RH=16%_T=57.2F

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 12113 feet above MH & estimated cloud temp is -58 F