Good air right now.

Fine particles are driving this official reading.

Updated Sun, Aug 30, 10:00 AM · Seattle-Tacoma-Bellevue, WA

27US AQI · Good

What’s shaping the air

Fine particles are leading.

This pollutant is contributing the most to the current AQI.

What comes next

Current reading and issued outlook

Official

Now · 10 AM27GoodUS AQIfine particles

Good through Sun.

See every reading

Complete city forecast

See the full Seattle-Tacoma-Bellevue forecast

Current weather · next 24 hours · five days · radar

Plan around it

Find your best time in Seattle-Tacoma-Bellevue.

Pick an activity and we’ll check the conditions.

What do you want to do?

Fine-tune this plan Optional

How long will you be outside?1 hr

How far ahead should we look?The next 3 days

What times work for you?6:00 AM–9:00 PM

Earliest start

Finished by

The full activity must fit between these times.

What should we be extra careful about? Optional

Air quality or smokeSun or UVHeatCold

How we knowSources, updates, and important limits

Different instruments. One honest answer.

Official monitoring is preferred when it is current and close enough. Modeled estimates stay clearly labeled.

Sources used here: AirNow · participating air agencies · preliminary real-time US AQI
Reporting area: Seattle-Bellevue-Kent Valley · About 24 miles from the evaluation point.

Local pattern

Seattle-Tacoma-Bellevue has recurring air-quality questions worth a focused local check. Current readings, the leading pollutant, and the near-term outlook stay together here.

Read the full source methodology Understand this signal