Mt Hamilton Weather

02-23-2026	DavisCop	Davis120	VaisaAPF	Davis40	DavisCro	Average
Temp Out	48.1	49.2	48.38		49.7	48.84 F
Dew Temp	30.2	35.9	35.06		37.3	34.61 F
Humidity	50	60	60		62	58 %
Wind Speed	23	26	22.8		11	20.7 mph
Wind Dir	184	192	173.0		144	Az=173
Pressure	25.85	25.89	25.91	25.83	26.2	+0.36 inHg
Precip		0	0	0		No Precip
Time PST	22:13:19	22:13:20	22:13:20	22:13:21	22:13:20	22:13:21

KAIT Rain & Dew 02-23-2026 22:13:19 No Rain rainint= 3% outdew= 1% indew= 0%
120 inch Rain & Dew 02-23-2026 22:13:20 No Rain rainint= 0% outdew= 1% indew= 0%
40 inch Rain & Dew 02-23-2026 22:13:21 No Rain rainint= 2% outdew= 0% indew= 0%
Crossley Rain & Dew

Particles um	0.3	0.5	0.7	1.0	2.0	3.0	5.0	10.0	Time
Out per 0.24 liter	1058	263	151	86	31	4	2	0	22:12:20
In per 0.24 liter	804	159							22:05:09

Estimated combined 0.3+0.5um particles weight as of 02-23-2026 22:12:20 is 6 ug/m3
Estimated PM2.5 Air Quality Index is 100 Moderate , TSP is 157 Above Secondary Standard

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 3022 feet above MH & estimated cloud temp is 19 F