Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out56.156.654.6855.45856.15 F
Dew Temp31.938.637.0439.538.937.18 F
Humidity405151554949.2 %
Wind Speed1475.1181912.6 mph
Wind Dir30212326.05315Az=336
Pressure25.8125.8625.8825.8126.1+0.33 inHg
Precip 00 0 No Precip
Time PST21:38:0721:38:0621:38:0821:38:0121:38:0821:38:08
KAIT inch Rain & Dew 03-14-2026 21:38:07 No Rain rainint= 7% outdew= 1% indew= 0%
120 inch Rain & Dew 03-14-2026 21:38:06 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-14-2026 21:38:05 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 03-14-2026 21:38:08 No Rain rainint= 0% outdew= 21% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter3407346135772020021:32:43
In per 0.24 liter1766198 21:35:08

Estimated combined 0.3+0.5um particles weight as of 03-14-2026 21:32:43 is 13 ug/m3
Estimated PM2.5 Air Quality Index is 65 Moderate , TSP is 95 Normal

120 Dome Floor Air Particles 03-14-2026 21:35:08 0.3 um=1766 0.5 um=198
Outside Air Particles by APF03-14-2026_21:32:43_0.3um=4899_0.5um=498_0.7um=195_1.0um=111_2.0um=29_3.0um=3_5.0um=1_10.0um=1_sc=19021475_fl=0.9_st=23_er=0_RH=53%_T=53.42F

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 4090 feet above MH & estimated cloud temp is 16 F