Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out40.242.342.841.944.642.36 F
Dew Temp24.830.629.8430.631.229.4 F
Humidity546360645960 %
Wind Speed162311.0172518.4 mph
Wind Dir193810.04238Az=29
Pressure25.6325.6625.6825.6125.97+0.13 inHg
Precip 00 0 No Precip
Time PST10:04:3710:04:3710:04:3810:04:3510:04:3710:04:37
KAIT inch Rain & Dew 01-24-2026 10:04:34 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 01-24-2026 10:04:34 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 01-24-2026 10:04:35 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 01-24-2026 10:04:37 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter76419015404212666011010:00:51
In per 0.24 liter4241492 09:57:57

Estimated combined 0.3+0.5um particles weight as of 01-24-2026 10:00:51 is 34 ug/m3
Estimated PM2.5 Air Quality Index is 864 Hazardous , TSP is 1280 Urgent

120 Dome Floor Air Particles 01-24-2026 09:57:57 0.3 um=4241 0.5 um=492
Outside Air Particles by APF01-24-2026_10:00:51_0.3um=12205_0.5um=1440_0.7um=863_1.0um=673_2.0um=426_3.0um=96_5.0um=18_10.0um=0_sc=14747120_fl=1.0_st=23_er=0_RH=49%_T=49.1F

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 2659 feet above MH & estimated cloud temp is 16 F