Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out56.7 63.3159.462.260.4 F
Dew Temp24.5 30.3833.535.430.94 F
Humidity29 29383733.25 %
Wind Speed0 0.9352.2 mph
Wind Dir30 70.034113Az=61
Pressure26.05 26.1126.0426.39+0.56 inHg
Precip 0 0 No Precip
Time PST10:01:31M3 OUT10:01:3210:01:3010:01:3110:01:31
KAIT inch Rain & Dew 03-11-2026 10:01:31 No Rain rainint= 3% outdew= 1% indew= 0%
120 inch Rain & Dew 03-11-2026 10:01:30 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-11-2026 10:01:30 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 03-11-2026 10:01:31 No Rain rainint= 0% outdew= 17% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter29184452051232930009:51:36
In per 0.24 liter1392223 09:37:30

Estimated combined 0.3+0.5um particles weight as of 03-11-2026 09:51:36 is 13 ug/m3
Estimated PM2.5 Air Quality Index is 94 Moderate , TSP is 135 Normal

120 Dome Floor Air Particles 03-11-2026 09:37:30 0.3 um=1392 0.5 um=223
Outside Air Particles by APF03-11-2026_09:51:36_0.3um=4196_0.5um=640_0.7um=295_1.0um=178_2.0um=42_3.0um=5_5.0um=1_10.0um=0_sc=18720261_fl=0.9_st=23_er=0_RH=23%_T=71.24F

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 6136 feet above MH & estimated cloud temp is -3 F