Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out60.262.563.68 61.461.94 F
Dew Temp31.538.935.42 38.536.08 F
Humidity344235 4338.5 %
Wind Speed11110 16 mph
Wind Dir244270North 252Az=308
Pressure25.7425.7825.7925.7125.99+0.24 inHg
Precip 00 0 No Precip
Time PST08:01:4908:01:4908:01:5108:01:4908:01:5108:01:50
KAIT inch Rain & Dew 07-26-2025 08:01:49 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 07-26-2025 08:01:52 No Rain rainint= 1% outdew= 0% indew= 0%
40 inch Rain & Dew 07-26-2025 08:01:49 No Rain rainint= 3% outdew= 1% indew= 0%
Crossley Rain & Dew 07-26-2025 08:01:51 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter24146960196742341007:59:06
In per 0.24 liter6718488 07:58:39

Estimated combined 0.3+0.5um particles weight as of 07-26-2025 07:59:06 is 81 ug/m3
Estimated PM2.5 Air Quality Index is 74 Moderate , TSP is 193 Above Secondary Standard

120 Dome Floor Air Particles 07-26-2025 07:58:39 0.3 um=6718 0.5 um=488
Outside Air Particles by APF07-26-2025_07:59:06_0.3um=30854_0.5um=1227_0.7um=251_1.0um=95_2.0um=30_3.0um=6_5.0um=2_10.0um=0_sc=8093501_fl=0.8_st=23_er=0_RH=30%_T=70.34F

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 5363 feet above MH & estimated cloud temp is 9 F