Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out76.577.476.4676.2 76.64 F
Dew Temp19.931.824.9837.6 28.57 F
Humidity12191525 17.75 %
Wind Speed152.92 2.7 mph
Wind Dir259324301.0300 Az=296
Pressure25.7625.8125.8325.7525.89+0.28 inHg
Precip 00 0 No Precip
Time PST22:47:1822:47:2022:47:2022:47:1922:47:1822:47:19
KAIT inch Rain & Dew 10-02-2026 22:47:14 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 10-02-2026 22:47:20 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 10-02-2026 22:47:19 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 10-02-2026 22:47:15 No Rain rainint= 0% outdew= 1% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter215526793622550022:41:38
In per 0.24 liter21469967 ------

Estimated combined 0.3+0.5um particles weight as of 10-02-2026 22:41:38 is 9 ug/m3
Estimated PM2.5 Air Quality Index is 81 Moderate , TSP is 113 Normal

120 Dome Floor Air Particles 07-26-2026 19:41:57 0.3 um=21469 0.5 um=967
Outside Air Particles by APF10-02-2026_22:41:38_0.3um=3098_0.5um=385_0.7um=134_1.0um=90_2.0um=37_3.0um=8_5.0um=1_10.0um=0_sc=1932240_fl=0.9_st=23_er=0_RH=19%_T=74.66F

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 10363 feet above MH & estimated cloud temp is -25 F