Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out51.653.551.6251.652.952.24 F
Dew Temp39.544.744.7845.645.944.09 F
Humidity637278807774 %
Wind Speed11146.9769.0 mph
Wind Dir260292283.0283253Az=274
Pressure25.7225.7725.7925.7126+0.24 inHg
Precip 00 0 No Precip
Time PST00:24:2500:24:2600:24:2700:24:2400:24:2600:24:26
KAIT inch Rain & Dew 03-01-2026 00:24:19 No Rain rainint= 2% outdew= 1% indew= 0%
120 inch Rain & Dew 03-01-2026 00:24:26 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-01-2026 00:24:24 No Rain rainint= 3% outdew= 0% indew= 0%
Crossley Rain & Dew
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter9461305628600000:18:38
In per 0.24 liter66189 00:15:22

Estimated combined 0.3+0.5um particles weight as of 03-01-2026 00:18:38 is 3 ug/m3
Estimated PM2.5 Air Quality Index is 19 Good , TSP is 26 Normal

120 Dome Floor Air Particles 03-01-2026 00:15:22 0.3 um=661 0.5 um=89
Outside Air Particles by APF03-01-2026_00:18:38_0.3um=1210_0.5um=167_0.7um=72_1.0um=36_2.0um=8_3.0um=0_5.0um=0_10.0um=0_sc=17822039_fl=0.8_st=23_er=0_RH=74%_T=52.52F

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 1999 feet above MH & estimated cloud temp is 33 F