Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out60.461.5 59.961.260.75 F
Dew Temp27.731.9 33.333.131.5 F
Humidity2933 373533.5 %
Wind Speed17266.7211116.3 mph
Wind Dir301323332.0360242Az=314
Pressure25.6625.71 25.6625.9--25.55 inHg
Precip 0 0 No Precip
Time PST23:51:0523:51:03M5 OUT23:51:0823:51:0523:51:20
KAIT inch Rain & Dew 06-29-2026 23:51:20 No Rain rainint= 1% outdew= 1% indew= 0%
120 inch Rain & Dew 06-29-2026 23:51:19 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 06-29-2026 23:51:04 No Rain rainint= 0% outdew= 0% indew= 0%
Crossley Rain & Dew 06-29-2026 23:51:17 No Rain rainint= 0% outdew= 0% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter ------
In per 0.24 liter799105 23:47:23

Estimated combined 0.3+0.5um particles weight as of 06-29-2026 10:42:04 is 29 ug/m3
Estimated PM2.5 Air Quality Index is 292 Very Unhealthy , TSP is 452 on Attention

120 Dome Floor Air Particles 06-29-2026 23:47:23 0.3 um=799 0.5 um=105
Outside Air Particles by APF

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 6727 feet above MH & estimated cloud temp is -5 F