Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out50.450.947.4849.2 49.49 F
Dew Temp21.429.627.1430.2 27.08 F
Humidity32444548 42.25 %
Wind Speed586.05 6 mph
Wind Dir350353345.026 Az=358
Pressure25.7629.8325.8125.7426.08+0.26 inHg
Precip 00 0 No Precip
Time PST00:17:3500:17:3700:17:3700:17:3500:17:2900:17:36
KAIT inch Rain & Dew 11-23-2025 00:17:35 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 11-23-2025 00:17:37 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 11-23-2025 00:17:35 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 11-23-2025 00:17:32 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter586511811410000:12:57
In per 0.24 liter36638 ------

Estimated combined 0.3+0.5um particles weight as of 11-23-2025 00:12:57 is 1 ug/m3
Estimated PM2.5 Air Quality Index is 13 Good , TSP is 17 Normal

120 Dome Floor Air Particles 11-22-2025 23:50:24 0.3 um=366 0.5 um=38
Outside Air Particles by APF11-23-2025_00:12:57_0.3um=843_0.5um=74_0.7um=27_1.0um=16_2.0um=7_3.0um=2_5.0um=1_10.0um=0_sc=9356015_fl=0.9_st=23_er=0_RH=49%_T=46.94F

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 4840 feet above MH & estimated cloud temp is 3 F