Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out54.6 57.9254.960.857.05 F
Dew Temp37.3 42.0843.845.542.17 F
Humidity52 55665757.5 %
Wind Speed9 4.7746.2 mph
Wind Dir252 332.0284263Az=282
Pressure25.6125.6225.6425.5625.88+0.09 inHg
Precip 00 0 No Precip
Time PST14:06:1214:06:1214:06:1414:06:1314:06:1214:06:12
KAIT inch Rain & Dew 10-12-2025 14:06:09 No Rain rainint= 0% outdew= 1% indew= 0%
120 inch Rain & Dew 10-12-2025 14:06:09 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 10-12-2025 14:06:13 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 10-12-2025 14:06:09 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter238652728214841104113:56:08
In per 0.24 liter678103 13:54:05

Estimated combined 0.3+0.5um particles weight as of 10-12-2025 13:56:08 is 13 ug/m3
Estimated PM2.5 Air Quality Index is 133 Unhealthy for Sensitive Groups , TSP is 358 Above Primary Standard

120 Dome Floor Air Particles 10-12-2025 13:54:05 0.3 um=678 0.5 um=103
Outside Air Particles by APF10-12-2025_13:56:08_0.3um=3812_0.5um=842_0.7um=452_1.0um=237_2.0um=67_3.0um=17_5.0um=7_10.0um=3_sc=5777240_fl=1.0_st=23_er=0_RH=44%_T=66.02F

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 2613 feet above MH & estimated cloud temp is 28 F