Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out40.541.642.841.243.441.9 F
Dew Temp19.525.724.2626.725.924.41 F
Humidity435348565050 %
Wind Speed27199.8171217.0 mph
Wind Dir30315355.0355343Az=352
Pressure25.7825.8325.8525.7726.2+0.3 inHg
Precip 00 0 No Precip
Time PST09:23:4309:23:4209:23:4409:23:4309:23:3309:23:43
KAIT inch Rain & Dew 03-06-2026 09:23:43 No Rain rainint= 4% outdew= 1% indew= 0%
120 inch Rain & Dew 03-06-2026 09:23:42 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 03-06-2026 09:23:43 No Rain rainint= 1% outdew= 0% indew= 0%
Crossley Rain & Dew 03-06-2026 09:23:39 No Rain rainint= 0% outdew= 4% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter194134624519382181009:15:29
In per 0.24 liter748129 08:57:44

Estimated combined 0.3+0.5um particles weight as of 03-06-2026 09:15:29 is 9 ug/m3
Estimated PM2.5 Air Quality Index is 266 Very Unhealthy , TSP is 367 Above Primary Standard

120 Dome Floor Air Particles 03-06-2026 08:57:44 0.3 um=748 0.5 um=129
Outside Air Particles by APF03-06-2026_09:15:29_0.3um=1861_0.5um=332_0.7um=235_1.0um=185_2.0um=79_3.0um=18_5.0um=1_10.0um=0_sc=18286169_fl=0.6_st=23_er=0_RH=44%_T=48.2F

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 3613 feet above MH & estimated cloud temp is 6 F