Today | Weather | Wednesday, October 22, 2025

Weather in Shoreline, Washington

04:14 AM

Now

45° F

Feels Like 43°

Precipitation 0 %

Wind 6 mph

Humidity 94 %

Today

Day 61°

Night 52°

Precipitation 55 %

Wind 9 mph

UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Shoreline Weather Forecast Updated

Last updated on October 22, 2025 1:22 AM

Weather Forecast History

Last Year's Weather on This Day (October 22, 2024)

Day

57°

Night

46°

Air Quality in Shoreline

NOW

35 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 8.5 µg/m³

PM₁₀ 11.38 µg/m³

O₃ 0.009 ppm

NO₂ 7.1 ppb

SO₂ 0.2 ppb

CO 0.19 ppm

NH₃ 1.41 µg/m³

NO 0.02 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 8.5 µg/m³

PM₁₀ – 11.38 µg/m³

O₃ – 17.15 µg/m³

NO₂ – 13.34 µg/m³

SO₂ – 0.59 µg/m³

CO – 221.94 µg/m³

NH₃ – 1.41 µg/m³

NO – 0.02 µg/m³

View Hourly Air Quality Forecast