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National Mall, District of Columbia

Unit of the national park system in District of Columbia

Air quality

The air at National Mall

Index 18, good, led by fine particles. Read at 6 AM from its reporting area, Northern Virginia and DC (DC), 2 miles off.

18Good
  • Fine particles (PM2.5)18Good16.2 mi
  • Ozone17Good11 ppb13.7 mi
  • Nitrogen dioxide3Good3.7 ppb13.7 mi
  • Sulfur dioxide0Good0 ppb13.7 mi
  • Carbon monoxide-0.1 ppm13.7 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 23, good.

Smoke, the next 45 hours

Little smoke near the ground through Sun 2 AM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at National Mall

0.10 in in the last 24 hours, and none in the 2 days before, to Fri 5 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.10in
Last 3 days
0.10in

Visibility

How far you can see at National Mall, the next 45 hours

Visibility stays 7 miles or more through Sun 2 AM, lowest 7 miles Fri 6 AM.

FriSat

Park

Designation
Unit of the national park system
Area
0.26 sq mi
Height at its point
14 ft
County
-
State
District of Columbia
Latitude
38.8899° N
Longitude
77.0222° W

What is measuring near here

The 4 instruments nearest National Mall, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.8 miles away.

measured now2 instruments

WashingtonNDBC-WASD2

At a river or reservoir gauge/1.2 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

Citizen station FW7745FW7745

In a volunteer observer's own ground/1.9 mi away/76 ft/62 ft above here

temp, humidity, wind, precip, pressure

measured daily2 instruments

Washington 0.4 SDC-DC-12

In a volunteer observer's own ground/0.8 mi away/46 ft/32 ft above here

precip, snowfall, snow depth

National ArboretumNARD2

In a park or preserve/3.1 mi away/13 ft/1 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 National Mall

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

Parks near National Mall

Every park in the state

Near National Mall

River and lake gauges