Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out64.365.765.4864.766.565.33 F
Dew Temp34.337.833.9738.338.536.57 F
Humidity333631383634.79 %
Wind Speed17119.6289.5 mph
Wind Dir115182273.012883Az=138
Pressure25.7525.825.8225.7325.95+0.27 inHg
Precip 00 0 No Precip
Time PST04:49:0304:49:0104:49:0304:48:5904:49:0104:49:02
KAIT inch Rain & Dew 09-08-2026 04:49:03 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 09-08-2026 04:49:01 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 09-08-2026 04:48:59 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 09-08-2026 04:49:01 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter25505463102171405324104:42:26
In per 0.24 liter21469967 ------

Estimated combined 0.3+0.5um particles weight as of 09-08-2026 04:42:26 is 14 ug/m3
Estimated PM2.5 Air Quality Index is 455 Hazardous , TSP is 1081 Urgent

120 Dome Floor Air Particles 07-26-2026 19:41:57 0.3 um=21469 0.5 um=967
Outside Air Particles by APF09-08-2026_04:42:26_0.3um=3666_0.5um=785_0.7um=447_1.0um=312_2.0um=202_3.0um=77_5.0um=35_10.0um=2_sc=7558480_fl=0.9_st=23_er=0_RH=32%_T=65.12F

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 6340 feet above MH & estimated cloud temp is 3 F