I-70 at Frederick / Wash. Co lineMD015
Beside a road/0.5 mi away/1,202 ft/20 ft above here
temp, pavement temp, wind, visibility, precip
Coming up. Tomorrow is 19 degrees warmer: a high of 79° after 60° today.
Now. South Mountain State Park is 56° and overcast at 10 PM. The dew point is 56°, so the air feels a little humid. Light breeze from the south-southeast at 4 mph.
Today and tonight. Tonight holds near 57°, under cloud. No rain is expected for the rest of the day.
The week. The warmest day ahead is tomorrow, near 79°, and the coolest Saturday, near 50°. Rain is likely tomorrow (67%). Rain is possible Saturday (33%). Frost is possible Sunday morning, a low of 34°.
The sky now. The Moon is a waxing crescent, 25% lit, and stays below the horizon until dawn. The next full Moon is Monday, Oct 26. Look for Saturn, bright in the 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. Cloud is forecast to cover most of the night, so the sky will be hard to see. The day is 11 hours 13 minutes long, 3 minutes shorter than yesterday.
As of 10:00 PM in South Mountain State Park, Maryland.
Air quality
Index 17, good, led by ozone. Read at 10 PM from its reporting area, Maryland Piedmont (MD), 17 miles off.
Good each day through Sun Oct 18, led by fine particles. Yesterday measured 42, good.
Little smoke near the ground through Sat 2 PM: the index from smoke stays at 6 or under.
Precipitation
0.07 in in the last 24 hours, and none in the 2 days before, to Thu 9 PM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 3 miles or more through Sat 2 PM, lowest 4 miles Sat 4 AM.
F
Now, today, and the week
The 6 instruments nearest South Mountain State Park, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.
measured now4 instruments
I-70 at Frederick / Wash. Co lineMD015
Beside a road/0.5 mi away/1,202 ft/20 ft above here
temp, pavement temp, wind, visibility, precip
Citizen station FW3881FW3881
In a volunteer observer's own ground/5.8 mi away/1,700 ft/518 ft above here
temp, humidity, wind, precip, pressure
Antietam National BattlefieldANBM2
At a river or reservoir gauge/9.3 mi away/476 ft/706 ft below here
temp, wind, gust, humidity, pressure
Camp DavidRSP
At an airfield/10.1 mi away/1,841 ft/659 ft above here
temp, wind, gust, visibility, precip, pressure
measured daily2 instruments
Myersville 2.2 NNWMD-FR-7
In a volunteer observer's own ground/1.4 mi away/1,092 ft/90 ft below here
precip, snowfall, snow depth
Hagerstown 1EHGCM2
At a cooperative observer's station/8.1 mi away/541 ft/641 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.