Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out7172.269.9870.473.171.33 F
Dew Temp43.951.447.8451.45149.1 F
Humidity384845514645.6 %
Wind Speed11114.0667.6 mph
Wind Dir340329341.022355Az=349
Pressure25.8125.8225.8425.7625.96+0.29 inHg
Precip 00 0 No Precip
Time PST18:29:2818:29:2918:29:2918:29:2618:29:2718:29:29
KAIT inch Rain & Dew 09-16-2025 18:29:28 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 09-16-2025 18:29:29 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 09-16-2025 18:29:26 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 09-16-2025 18:29:27 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter1215211815763501474919218:28:18
In per 0.24 liter5506466 18:01:19

Estimated combined 0.3+0.5um particles weight as of 09-16-2025 18:28:18 is 50 ug/m3
Estimated PM2.5 Air Quality Index is 477 Hazardous , TSP is 1192 Urgent

120 Dome Floor Air Particles 09-16-2025 18:01:19 0.3 um=5506 0.5 um=466
Outside Air Particles by APF09-16-2025_18:28:18_0.3um=19410_0.5um=1887_0.7um=920_1.0um=560_2.0um=235_3.0um=79_5.0um=31_10.0um=4_sc=3547570_fl=1.0_st=23_er=0_RH=44%_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 4727 feet above MH & estimated cloud temp is 25 F