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Porter Pass, Washington

Mountain pass in Thurston County, Washington, at 1,198 ft

Air quality

The air at Porter Pass

Index 9, good, led by fine particles. Read at 8 PM from its reporting area, Olympia-Lacey-Tumwater (WA), 15 miles off.

9Good
  • Fine particles (PM2.5)9Good14.5 mi
  • Ozone6Good1 ppb14.5 mi

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 20, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 17 or under.

FriSat

Precipitation

What has fallen at Porter Pass

None in the last 3 days, to Thu 8 PM. 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 Porter Pass, the next 45 hours

Visibility stays 5 miles or more through Sat 5 PM, lowest 5 miles Sat 2 AM.

FriSat

Mountain pass

Height
1,198 ft
County
Thurston County
State
Washington
Latitude
47.0220° N
Longitude
123.1349° W

What is measuring near here

The 6 instruments nearest Porter Pass, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.

measured now4 instruments

Rock Candy MountainTCAND

Beside a road/2.0 mi away/551 ft/647 ft below here

temp, pavement temp, wind, visibility, precip

Citizen station FW8782FW8782

In a volunteer observer's own ground/8.6 mi away/198 ft/1,000 ft below here

temp, humidity, wind, precip, pressure

Littlerock - Cedar CreekCDCW1

At a river or reservoir gauge/9.5 mi away/729 ft/469 ft below here

temp, wind, gust, humidity, pressure

OlympiaOLM

At an airfield/11.4 mi away/200 ft/998 ft below here

temp, wind, gust, visibility, precip, pressure

measured daily2 instruments

Olympia 13.5 WNWWA-TH-18

In a volunteer observer's own ground/3.6 mi away/377 ft/821 ft below here

precip, snowfall, snow depth

ElmaELAW1

At a cooperative observer's station/12.6 mi away/98 ft/1,100 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Washington

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

Near Porter Pass

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

Near Porter Pass