Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out67.265.767.8165.369.567.1 F
Dew Temp16.223.424.0830.228.824.53 F
Humidity142019272220.39 %
Wind Speed052.2402.2 mph
Wind Dir349343348.043313Az=350
Pressure25.9926.0226.0425.9626.25+0.49 inHg
Precip 00 0 No Precip
Time PST14:34:3414:34:3314:34:3414:34:3414:34:3514:34:33
KAIT inch Rain & Dew 01-13-2026 14:34:34 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 01-13-2026 14:34:33 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 01-13-2026 14:34:34 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 01-13-2026 14:34:35 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter65967167510014:26:33
In per 0.24 liter46041 14:32:30

Estimated combined 0.3+0.5um particles weight as of 01-13-2026 14:26:33 is 1 ug/m3
Estimated PM2.5 Air Quality Index is 16 Good , TSP is 19 Normal

120 Dome Floor Air Particles 01-13-2026 14:32:30 0.3 um=460 0.5 um=41
Outside Air Particles by APF01-13-2026_14:26:33_0.3um=1053_0.5um=108_0.7um=26_1.0um=12_2.0um=8_3.0um=2_5.0um=1_10.0um=0_sc=13812836_fl=1.0_st=23_er=0_RH=15%_T=76.28F

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 9613 feet above MH & estimated cloud temp is -29 F