Mt Hamilton Weather
LO FriendsDavisCopDavis120VaisaAPFDavis40DavisCroAverage
Temp Out50.852.652.75252.752.16 F
Dew Temp49.352325251.847.42 F
Humidity959897.531009797.5 %
Wind Speed262.9263.8 mph
Wind Dir294323307.0269233Az=286
Pressure25.6825.725.7225.6425.97+0.17 inHg
Precip 01 0 Dew/Driz
Time PST09:30:0409:30:0309:30:0509:30:0309:30:0309:30:04
KAIT inch Rain & Dew 09-10-2025 09:30:01 Raining! rainint= 2% outdew= 96% indew= 4%
120 inch Rain & Dew 09-10-2025 09:30:03 Raining! rainint= 0% outdew= 97% indew= 0%
40 inch Rain & Dew 09-10-2025 09:30:03 No Rain rainint= 1% outdew= 34% indew= 0%
Crossley Rain & Dew 09-10-2025 09:30:03 No Rain rainint= 0% outdew= 58% indew= 0%
Particles um0.30.50.71.02.03.05.010.0Time
Out per 0.24 liter6667473847034665453240233458205309:22:59
In per 0.24 liter13316 09:07:59

Estimated combined 0.3+0.5um particles weight as of 09-10-2025 09:22:59 is 82 ug/m3
Estimated PM2.5 Air Quality Index is 14729 Hazardous , TSP is 292523 Urgent

120 Dome Floor Air Particles 09-10-2025 09:07:59 0.3 um=133 0.5 um=16
Outside Air Particles by APF09-10-2025_09:22:59_0.3um=5325_0.5um=3784_0.7um=3756_1.0um=3726_2.0um=3620_3.0um=3213_5.0um=2762_10.0um=1640_sc=2996550_fl=0.5_st=23_er=0_RH=96%_T=58.1F

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 51 F