Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out69.668.471.4269.269.569.62 F
Dew Temp28.936.333.9740.141.136.07 F
Humidity223125353629.8 %
Wind Speed004.3000.9 mph
Wind Dir217204158.0182230Az=199
Pressure25.9926.0226.0525.9726.25+0.5 inHg
Precip 00 0 No Precip
Time PST13:29:1013:29:1013:29:1113:29:1113:29:0913:29:10
KAIT inch Rain & Dew 02-03-2026 13:29:07 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 02-03-2026 13:29:10 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 02-03-2026 13:29:07 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 02-03-2026 13:29:09 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter29314572171293961013:26:05
In per 0.24 liter2060251 13:18:05

Estimated combined 0.3+0.5um particles weight as of 02-03-2026 13:26:05 is 14 ug/m3
Estimated PM2.5 Air Quality Index is 126 Unhealthy for Sensitive Groups , TSP is 190 Above Secondary Standard

120 Dome Floor Air Particles 02-03-2026 13:18:05 0.3 um=2060 0.5 um=251
Outside Air Particles by APF02-03-2026_13:26:05_0.3um=4682_0.5um=730_0.7um=347_1.0um=207_2.0um=63_3.0um=11_5.0um=3_10.0um=0_sc=15623278_fl=1.0_st=23_er=0_RH=23%_T=77.36F

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 7295 feet above MH & estimated cloud temp is -4 F