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Frederick Douglass National Historic Site, District of Columbia

National Historic Site in District of Columbia

Air quality

The air at Frederick Douglass National Historic Site

Index 54, moderate, led by fine particles. Read at 4 AM from its reporting area, Northern Virginia and DC (DC), 4 miles off.

54Moderate
  • Fine particles (PM2.5)54Moderate3 mi
  • Ozone10Good2 ppb3 mi
  • Nitrogen dioxide9Good10.8 ppb3 mi
  • Sulfur dioxide0Good0 ppb14.8 mi
  • Carbon monoxide-0.7 ppm3.1 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 35, good.

Smoke, the next 46 hours

No smoke near the ground through Wed 2 AM.

MonTue

Precipitation

What has fallen at Frederick Douglass National Historic Site

None in the last 24 hours; 0.39 in over the last 3 days, to Mon 4 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.39in

Visibility

How far you can see at Frederick Douglass National Historic Site, the next 46 hours

Visibility stays 10 miles or more through Wed 2 AM.

MonTue

Park

Designation
National Historic Site
Area
365,000 sq ft
Height at its point
116 ft
County
-
State
District of Columbia
Latitude
38.8630° N
Longitude
76.9852° W

What is measuring near here

The 4 instruments nearest Frederick Douglass National Historic Site, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now2 instruments

Citizen station FW7745FW7745

In a volunteer observer's own ground/1.2 mi away/76 ft/40 ft below here

temp, humidity, wind, precip, pressure

WashingtonNDBC-WASD2

At a river or reservoir gauge/2.0 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Washington 2.4 SEDC-DC-36

In a volunteer observer's own ground/1.1 mi away/83 ft/33 ft below here

precip, snowfall, snow depth

National ArboretumNARD2

In a park or preserve/2.7 mi away/13 ft/103 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in District of Columbia

3 places, each with its own forecast and its own instruments.

Near Frederick Douglass National Historic Site

The nearest places, each with its own forecast and the instruments nearest it.

Near Frederick Douglass National Historic Site