I-70 at Frederick / Wash. Co lineMD015
Beside a road/1.8 mi away/1,202 ft/207 ft above here
temp, pavement temp, wind, visibility, precip
Coming up. Tomorrow is 30 degrees cooler: a high of 51° after 81° today.
Now. Greenbrier State Park is 57° and overcast at 1 AM. The dew point is 57°, so the air feels a little humid. Light breeze from the south-southeast at 6 mph.
Today and tonight. It warms to about 80° by 2 PM. Tonight falls to about 45° by 8 AM, under a mostly clear sky.
The week. The warmest day ahead is Tuesday, near 63°, and the coolest tomorrow, near 51°. Rain is possible tomorrow (33%). Frost is possible Sunday morning, a low of 34°.
The sky tonight. The sun sets at 6:30 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:26 PM. The next full Moon is Monday, Oct 26. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 10 minutes long, 2 minutes shorter than yesterday.
As of 1:00 AM in Greenbrier State Park, Maryland.
Air quality
Index 18, good, led by fine particles. Read at 12 AM from its reporting area, Hagerstown Region (MD), 16 miles off.
Good each day through Sun Oct 18, led by fine particles. Yesterday measured 42, good.
Little smoke near the ground through Sat 8 PM: the index from smoke stays at 6 or under.
Precipitation
0.10 in in the last 24 hours, and none in the 2 days before, to Fri 12 AM. Measured by radar and rain gauges, as water.
Visibility
Mist or haze: visibility falls to 2 miles Fri 6 PM.
F
Now, today, and the week
The 6 instruments nearest Greenbrier State Park, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.2 miles away.
measured now4 instruments
I-70 at Frederick / Wash. Co lineMD015
Beside a road/1.8 mi away/1,202 ft/207 ft above here
temp, pavement temp, wind, visibility, precip
Citizen station FW3881FW3881
In a volunteer observer's own ground/7.1 mi away/1,700 ft/705 ft above here
temp, humidity, wind, precip, pressure
Antietam National BattlefieldANBM2
At a river or reservoir gauge/7.4 mi away/476 ft/519 ft below here
temp, wind, gust, humidity, pressure
Camp DavidRSP
At an airfield/12.1 mi away/1,841 ft/846 ft above here
temp, wind, gust, visibility, precip, pressure
measured daily2 instruments
Boonsboro 0.4 NNEMD-WH-17
In a volunteer observer's own ground/1.2 mi away/556 ft/439 ft below here
precip, snowfall, snow depth
Hagerstown 1EHGCM2
At a cooperative observer's station/8.6 mi away/541 ft/454 ft below here
snowfall, snow depth, precip, high, low
-
Snow on the ground
21 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.