Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out47.252.449.4650.349.749.81 F
Dew Temp3944.745.8646.245.944.33 F
Humidity737587868781.59 %
Wind Speed943.6555.3 mph
Wind Dir195197201.0225224Az=208
Pressure25.5725.6225.6425.5625.92+0.09 inHg
Precip 00 0 No Precip
Time PST17:31:1117:31:1217:31:1217:31:1217:31:1317:31:13
KAIT inch Rain & Dew 04-24-2026 17:31:11 No Rain rainint= 3% outdew= 1% indew= 0%
120 inch Rain & Dew 04-24-2026 17:31:12 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 04-24-2026 17:31:12 No Rain rainint= 2% outdew= 0% indew= 0%
Crossley Rain & Dew 04-24-2026 17:31:13 No Rain rainint= 0% outdew= 3% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter20430565936272186526429017:25:21
In per 0.24 liter3583899 17:27:49

Estimated combined 0.3+0.5um particles weight as of 04-24-2026 17:25:21 is 133 ug/m3
Estimated PM2.5 Air Quality Index is 1709 Hazardous , TSP is 2448 Urgent

120 Dome Floor Air Particles 04-24-2026 17:27:49 0.3 um=3583 0.5 um=899
Outside Air Particles by APF04-24-2026_17:25:21_0.3um=22842_0.5um=6328_0.7um=4056_1.0um=2445_2.0um=589_3.0um=47_5.0um=11_10.0um=0_sc=22548397_fl=0.7_st=23_er=0_RH=75%_T=52.88F

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 1749 feet above MH & estimated cloud temp is 35 F