Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out 44.243.5243.144.243.75 F
Dew Temp 43.93243.143.640.65 F
Humidity 991001009899.25 %
Wind Speed 1221.7141014.4 mph
Wind Dir 34200.0360101Az=60
Pressure25.5625.5925.6125.5325.92+0.06 inHg
Precip 40 0 Fog
Time PST22:50:5922:50:5822:51:0022:51:0022:50:5922:51:00
KAIT inch Rain & Dew 01-02-2026 22:50:59 Raining! rainint= 42% outdew= 72% indew= 1%
120 inch Rain & Dew 01-02-2026 22:50:58 Raining! rainint= 43% outdew= 74% indew= 4%
40 inch Rain & Dew 01-02-2026 22:51:00 Raining! rainint= 68% outdew= 73% indew= 0%
Crossley Rain & Dew 01-02-2026 22:50:59 Raining! rainint= 11% outdew= 71% indew= 1%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter24052085205920251893151598927022:43:23
In per 0.24 liter288 22:42:40

Estimated combined 0.3+0.5um particles weight as of 01-02-2026 22:43:23 is 33 ug/m3
Estimated PM2.5 Air Quality Index is 6152 Hazardous , TSP is 52876 Urgent

120 Dome Floor Air Particles 01-02-2026 22:42:40 0.3 um=28 0.5 um=8
Outside Air Particles by APF01-02-2026_22:43:23_0.3um=2305_0.5um=1999_0.7um=1974_1.0um=1941_2.0um=1815_3.0um=1452_5.0um=948_10.0um=259_sc=12892408_fl=0.6_st=23_er=0_RH=102%_T=45.32F

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 68 feet above MH & estimated cloud temp is 43 F