Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out56.655.154.8653.858.255.71 F
Dew Temp53.653.355.9453.854.954.3 F
Humidity90941001008994.6 %
Wind Speed382.9634.6 mph
Wind Dir294330334.0348265Az=315
Pressure25.8125.8425.8525.7826.12+0.3 inHg
Precip 10 0 Dew?
Time PST15:46:3015:46:3215:46:3215:46:3115:46:3015:46:30
KAIT inch Rain & Dew 11-07-2025 15:46:26 No Rain rainint= 1% outdew= 1% indew= 5%
120 inch Rain & Dew 11-07-2025 15:46:32 No Rain rainint= 0% outdew= 1% indew= 1%
40 inch Rain & Dew 11-07-2025 15:46:31 No Rain rainint= 2% outdew= 1% indew= 0%
Crossley Rain & Dew 11-07-2025 15:46:30 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter51378304372626371015:45:13
In per 0.24 liter576163 15:42:58

Estimated combined 0.3+0.5um particles weight as of 11-07-2025 15:45:13 is 25 ug/m3
Estimated PM2.5 Air Quality Index is 204 Very Unhealthy , TSP is 305 Above Primary Standard

120 Dome Floor Air Particles 11-07-2025 15:42:58 0.3 um=576 0.5 um=163
Outside Air Particles by APF11-07-2025_15:45:13_0.3um=8206_0.5um=1327_0.7um=699_1.0um=420_2.0um=101_3.0um=12_5.0um=2_10.0um=0_sc=8029779_fl=1.0_st=23_er=0_RH=82%_T=59.54F

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 409 feet above MH & estimated cloud temp is 51 F