Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out66.467.366.9266.1 66.68 F
Dew Temp34.642.638.6541.5 39.33 F
Humidity31413541 37 %
Wind Speed10119.86 9.2 mph
Wind Dir86147119.0100 Az=113
Pressure25.9625.9926.0125.9326.19+0.46 inHg
Precip 00 0 No Precip
Time PST21:22:4021:22:3921:22:4021:22:4021:22:3821:22:40
KAIT inch Rain & Dew 11-09-2025 21:22:40 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 11-09-2025 21:22:39 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 11-09-2025 21:22:40 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 11-09-2025 21:22:38 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter18382951509037113121:22:04
In per 0.24 liter982130 21:00:30

Estimated combined 0.3+0.5um particles weight as of 11-09-2025 21:22:04 is 8 ug/m3
Estimated PM2.5 Air Quality Index is 120 Unhealthy for Sensitive Groups , TSP is 319 Above Primary Standard

120 Dome Floor Air Particles 11-09-2025 21:00:30 0.3 um=982 0.5 um=130
Outside Air Particles by APF11-09-2025_21:22:04_0.3um=2937_0.5um=472_0.7um=241_1.0um=145_2.0um=60_3.0um=19_5.0um=6_10.0um=2_sc=8222765_fl=1.0_st=23_er=0_RH=37%_T=66.38F

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 5613 feet above MH & estimated cloud temp is 12 F