Air Quality in Seattle, United States

Overcast
9.4°C · 95.2% humidity
9.4°
Feels 7.3°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
26 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
13 3am
12
12
22 6am
21
20
19 9am
18
1
1 12pm
0
0
0 3pm
0
0
0 6pm
0
0
0 9pm
0
0
0 12am
0
0
Station readings
13
12
12
30
CAMS model adj -37
54
54
54
54
54
54
54
54
34
34
34
27
27
27
27
25
27
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

48h · 18 stn

Seattle's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

95.2%
Humidity
13.6 km/h
Wind NNE
1018.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
22
5.35 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Seattle?

Temperature & Precipitation

PM2.5 Trend

48h · 18 stations
PM2.55.35 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (26 stations within 25 km)
5.35
Median
4.79
Average
0.1
Low
7.9
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +4.7

What is the 7-day forecast for Seattle?

09-05
24.3° 9.4°
09-06
23.1° 11.7°
09-07
20.6° 10.4°
1.13 mm
09-08
26.7° 10.1°
0.75 mm
09-09
26.5° 12.3°
0.19 mm
09-10
27.3° 11.6°
09-11
23.4° 8.8°
Both models agree Avg diff: 3.7°C

Where are air quality stations near Seattle?

35
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 8.4 µg/m³
16
Olive St, Seattle, Washington, USA
2.4 km PM2.5: 3.8 µg/m³
10
Olive St, Seattle, Washington, USA
2.4 km PM2.5: 2.4 µg/m³
21
Seattle-16th Ave S
3.2 km PM2.5: 5.0 µg/m³
–
Belvidere
4.5 km 24.7°C 33.0% RH PM2.5: 0.1 µg/m³ PM10: 0.1 µg/m³
25
Seattle-23rd Ave SW
4.5 km PM2.5: 6.0 µg/m³
11
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 2.6 µg/m³
20
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 4.8 µg/m³
25
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 6.0 µg/m³
10
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 2.4 µg/m³

What cities are near Seattle?

20 Columbia City 21 Mercer Island 20 Kirkland 22 Bryn Mawr-Skyway 19 Bainbridge Island 20 Inglewood-Finn Hill 20 Burien 21 Tukwila 21 Renton 20 Shoreline
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T13:59 UTC.