Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out56.957.656.356.6 56.85 F
Dew Temp30.637.438.6538.6 36.31 F
Humidity37475251 46.75 %
Wind Speed14156.014 12.2 mph
Wind Dir290339333.0336 Az=325
Pressure25.6625.7225.7325.6525.95+0.18 inHg
Precip 00 0 No Precip
Time PST18:22:4218:22:4318:22:4418:22:4218:22:4118:22:44
KAIT inch Rain & Dew 04-30-2026 18:22:42 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 04-30-2026 18:22:43 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 04-30-2026 18:22:42 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 04-30-2026 18:22:44 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter4607116162034386182018:15:56
In per 0.24 liter3565691 18:15:34

Estimated combined 0.3+0.5um particles weight as of 04-30-2026 18:15:56 is 28 ug/m3
Estimated PM2.5 Air Quality Index is 279 Very Unhealthy , TSP is 442 on Attention

120 Dome Floor Air Particles 04-30-2026 18:15:34 0.3 um=3565 0.5 um=691
Outside Air Particles by APF04-30-2026_18:15:56_0.3um=6624_0.5um=1670_0.7um=892_1.0um=494_2.0um=124_3.0um=26_5.0um=3_10.0um=0_sc=23069744_fl=0.9_st=23_er=0_RH=45%_T=60.44F

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 4590 feet above MH & estimated cloud temp is 12 F