Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out6059.261.758.459.359.72 F
Dew Temp720.220.842623.319.46 F
Humidity122221292521.8 %
Wind Speed11154.9151011.2 mph
Wind Dir292340324.0338290Az=317
Pressure25.825.8525.8725.7926.07+0.32 inHg
Precip 00 0 No Precip
Time PST08:18:2008:18:2308:18:2208:18:2108:18:2108:18:21
KAIT inch Rain & Dew 03-25-2026 08:18:20 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 03-25-2026 08:18:19 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-25-2026 08:18:17 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 03-25-2026 08:18:18 No Rain rainint= 1% outdew= 33% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter1658251111621200008:15:19
In per 0.24 liter819103 07:57:35

Estimated combined 0.3+0.5um particles weight as of 03-25-2026 08:15:19 is 7 ug/m3
Estimated PM2.5 Air Quality Index is 39 Good , TSP is 56 Normal

120 Dome Floor Air Particles 03-25-2026 07:57:35 0.3 um=819 0.5 um=103
Outside Air Particles by APF03-25-2026_08:15:19_0.3um=2384_0.5um=362_0.7um=160_1.0um=90_2.0um=18_3.0um=0_5.0um=0_10.0um=0_sc=19923872_fl=0.9_st=23_er=0_RH=19%_T=70.16F

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 8863 feet above MH & estimated cloud temp is -29 F