Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out4445.344.4244.145.244.6 F
Dew Temp42.644.73244.144.341.54 F
Humidity959897.491009797.49 %
Wind Speed16810.1669.2 mph
Wind Dir183129185.0192230Az=185
Pressure25.525.5225.5425.4625.78--0.01 inHg
Precip 01 8 MRain
Time PST00:18:5300:18:5300:18:5400:18:5400:18:5200:18:54
KAIT inch Rain & Dew 11-16-2025 00:18:53 Raining! rainint= 75% outdew= 75% indew= 0%
120 inch Rain & Dew 11-16-2025 00:18:49 Raining! rainint= 85% outdew= 69% indew= 0%
40 inch Rain & Dew 11-16-2025 00:18:54 Raining! rainint=100% outdew= 83% indew= 0%
Crossley Rain & Dew 11-16-2025 00:18:52 Raining! rainint= 53% outdew= 81% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter7898689668506794660557664610123900:11:06
In per 0.24 liter7916 ------

Estimated combined 0.3+0.5um particles weight as of 11-16-2025 00:11:06 is 113 ug/m3
Estimated PM2.5 Air Quality Index is 21466 Hazardous , TSP is 233016 Urgent

120 Dome Floor Air Particles 11-15-2025 23:48:51 0.3 um=79 0.5 um=16
Outside Air Particles by APF11-16-2025_00:11:06_0.3um=6308_0.5um=5508_0.7um=5471_1.0um=5426_2.0um=5275_3.0um=4605_5.0um=3682_10.0um=990_sc=8751211_fl=0.5_st=23_er=0_RH=99%_T=46.4F

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 136 feet above MH & estimated cloud temp is 43 F