Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out6768.264.9466.267.366.72 F
Dew Temp8.321.615.826.123.519.06 F
Humidity101715221916.6 %
Wind Speed13219.8201315.4 mph
Wind Dir293333346.0360267Az=321
Pressure25.7325.7825.825.7125.92+0.25 inHg
Precip 00 0 No Precip
Time PST02:24:1702:24:1802:24:1802:24:1502:24:1702:24:17
KAIT inch Rain & Dew 07-28-2026 02:24:17 No Rain rainint= 0% outdew= 1% indew= 0%
120 inch Rain & Dew 07-28-2026 02:24:18 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 07-28-2026 02:24:15 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 07-28-2026 02:24:17 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter27841563014500002:21:31
In per 0.24 liter21469967 ------

Estimated combined 0.3+0.5um particles weight as of 07-28-2026 02:21:31 is 10 ug/m3
Estimated PM2.5 Air Quality Index is 16 Good , TSP is 28 Normal

120 Dome Floor Air Particles 07-26-2026 19:41:57 0.3 um=21469 0.5 um=967
Outside Air Particles by APF07-28-2026_02:21:31_0.3um=4003_0.5um=225_0.7um=44_1.0um=21_2.0um=8_3.0um=1_5.0um=0_10.0um=0_sc=3921883_fl=0.9_st=23_er=0_RH=20%_T=63.14F

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 10590 feet above MH & estimated cloud temp is -37 F