Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out4748.649.2848.150.848.75 F
Dew Temp20.526.924.2627.627.125.27 F
Humidity354337454040 %
Wind Speed333617.4251224.7 mph
Wind Dir5390.0355304Az=357
Pressure25.8125.8525.8725.826.19+0.32 inHg
Precip 00 0 No Precip
Time PST09:37:0709:37:0909:37:0909:37:0609:37:0709:37:07
KAIT inch Rain & Dew 03-07-2026 09:37:07 No Rain rainint= 3% outdew= 1% indew= 0%
120 inch Rain & Dew 03-07-2026 09:37:09 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-07-2026 09:37:06 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 03-07-2026 09:37:07 No Rain rainint= 0% outdew= 8% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter22553281971223563009:28:34
In per 0.24 liter1377174 09:35:53

Estimated combined 0.3+0.5um particles weight as of 03-07-2026 09:28:34 is 10 ug/m3
Estimated PM2.5 Air Quality Index is 113 Unhealthy for Sensitive Groups , TSP is 200 Above Secondary Standard

120 Dome Floor Air Particles 03-07-2026 09:35:53 0.3 um=1377 0.5 um=174
Outside Air Particles by APF03-07-2026_09:28:34_0.3um=3602_0.5um=524_0.7um=315_1.0um=195_2.0um=56_3.0um=10_5.0um=5_10.0um=1_sc=18373343_fl=1.0_st=23_er=0_RH=32%_T=54.68F

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 4931 feet above MH & estimated cloud temp is 0 F