Storm Station

Mastodon State Historic Site, Missouri

State Historic Site in Jefferson County, Missouri

Air quality

The air at Mastodon State Historic Site

Index 53, moderate, led by fine particles. Read at 4 AM from its reporting area, St. Louis (Metro-east) (IL), 27 miles off.

53Moderate
  • Fine particles (PM2.5)53Moderate4.7 mi
  • Ozone19Good25 ppb4.7 mi
  • Coarse particles (PM10)19Good4.7 mi
  • Nitrogen dioxide8Good9.3 ppb4.7 mi
  • Sulfur dioxide0Good0 ppb8.1 mi
  • Carbon monoxide-0.5 ppm22 mi

The days ahead

Highest moderate, Wed Oct 7, led by fine particles. Yesterday measured 44, good.

Smoke, the next 46 hours

Little smoke near the ground through Thu 1 AM: the index from smoke stays at 6 or under.

TueWed

Precipitation

What has fallen at Mastodon State Historic Site

None in the last 3 days, to Tue 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Mastodon State Historic Site, the next 46 hours

Visibility stays 10 miles or more through Thu 1 AM.

TueWed

Park

Designation
State Historic Site
Area
0.65 sq mi
Height at its point
426 ft
County
Jefferson County
State
Missouri
Latitude
38.3810° N
Longitude
90.3971° W

What is measuring near here

The 6 instruments nearest Mastodon State Historic Site, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.6 miles away.

measured now4 instruments

Citizen station EW1948EW1948

In a volunteer observer's own ground/7.1 mi away/514 ft/88 ft above here

temp, humidity, wind, precip, pressure

Shaw Nature ReserveS2227

At a soil climate station/23.4 mi away/623 ft/197 ft above here

temp, humidity, soil temp, soil moisture

St. Louis/SpiritSUS

At an airfield/23.7 mi away/463 ft/37 ft above here

temp, wind, gust, visibility, precip, pressure

measured daily2 instruments

Arnold 2.3 SMO-JF-32

In a volunteer observer's own ground/1.6 mi away/525 ft/99 ft above here

precip, snowfall, snow depth

Imperial 3NWIMPM7

At a cooperative observer's station/2.5 mi away/509 ft/83 ft above here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Missouri

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

Near Mastodon State Historic Site

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

Near Mastodon State Historic Site