Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out73.474.171.7871.272.372.55 F
Dew Temp17.415.913.8224.121.918.62 F
Humidity121111171513.2 %
Wind Speed750.9624.2 mph
Wind Dir187237186.0227245Az=217
Pressure25.825.8625.8825.7925.97+0.33 inHg
Precip 00 0 No Precip
Time PST02:46:2602:46:2602:46:2702:46:2702:46:2702:46:27
KAIT inch Rain & Dew 08-25-2026 02:46:26 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 08-25-2026 02:46:26 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 08-25-2026 02:46:27 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 08-25-2026 02:46:27 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter1185150103000002:37:18
In per 0.24 liter21469967 ------

Estimated combined 0.3+0.5um particles weight as of 08-25-2026 02:37:18 is 34 ug/m3
Estimated PM2.5 Air Quality Index is 0 Good , TSP is 34 Normal

120 Dome Floor Air Particles 07-26-2026 19:41:57 0.3 um=21469 0.5 um=967
Outside Air Particles by APF08-25-2026_02:37:18_0.3um=18929_0.5um=81_0.7um=16_1.0um=6_2.0um=1_3.0um=0_5.0um=0_10.0um=0_sc=6341593_fl=1.0_st=23_er=0_RH=14%_T=70.88F

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 13227 feet above MH & estimated cloud temp is -57 F