Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out45.746.746.0446.347.546.44 F
Dew Temp4444.746.2244.944.644.88 F
Humidity9493100959094.4 %
Wind Speed14136.7121211.5 mph
Wind Dir781888.09242Az=64
Pressure25.6525.6725.6925.6125.97+0.14 inHg
Precip 00 0 Dew?
Time PST02:44:4002:44:3902:44:4002:44:3902:44:3802:44:40
KAIT inch Rain & Dew 11-15-2025 02:44:40 No Rain rainint= 2% outdew= 88% indew= 0%
120 inch Rain & Dew 11-15-2025 02:44:36 No Rain rainint= 0% outdew= 17% indew= 0%
40 inch Rain & Dew 11-15-2025 02:44:39 No Rain rainint= 2% outdew= 0% indew= 0%
Crossley Rain & Dew 11-15-2025 02:44:41 No Rain rainint= 1% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter1034165102662550002:38:28
In per 0.24 liter41750 02:41:53

Estimated combined 0.3+0.5um particles weight as of 11-15-2025 02:38:28 is 4 ug/m3
Estimated PM2.5 Air Quality Index is 81 Moderate , TSP is 109 Normal

120 Dome Floor Air Particles 11-15-2025 02:41:53 0.3 um=417 0.5 um=50
Outside Air Particles by APF11-15-2025_02:38:28_0.3um=1487_0.5um=238_0.7um=147_1.0um=96_2.0um=37_3.0um=8_5.0um=0_10.0um=0_sc=8673660_fl=0.9_st=23_er=0_RH=93%_T=47.3F

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 454 feet above MH & estimated cloud temp is 42 F