Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out61.260.858.28 60.660.22 F
Dew Temp-3.716.912.92 22.412.13 F
Humidity71817 2316.25 %
Wind Speed111211.0 1612.5 mph
Wind Dir281354317.0 287Az=309
Pressure25.8125.8525.8725.7926.04+0.32 inHg
Precip 00 0 No Precip
Time PST01:33:2101:33:2301:33:2301:33:2001:33:2201:33:23
KAIT inch Rain & Dew 03-25-2026 01:33:21 No Rain rainint= 1% outdew= 0% indew= 0%
120 inch Rain & Dew 03-25-2026 01:33:23 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-25-2026 01:33:20 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 03-25-2026 01:33:22 No Rain rainint= 0% outdew= 32% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter3869419166912661001:25:01
In per 0.24 liter2079248 01:25:26

Estimated combined 0.3+0.5um particles weight as of 03-25-2026 01:25:01 is 16 ug/m3
Estimated PM2.5 Air Quality Index is 84 Moderate , TSP is 145 Normal

120 Dome Floor Air Particles 03-25-2026 01:25:26 0.3 um=2079 0.5 um=248
Outside Air Particles by APF03-25-2026_01:25:01_0.3um=5562_0.5um=603_0.7um=239_1.0um=132_2.0um=38_3.0um=9_5.0um=2_10.0um=0_sc=19899251_fl=0.9_st=23_er=0_RH=17%_T=57.74F

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 9977 feet above MH & estimated cloud temp is -38 F