Air Quality in Seattle, United States

Rain
24.4°C · 38.3% humidity
24.4°
Feels 24.4°
42
Good
Air quality is satisfactory. Enjoy outdoor activities.
25 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
10 11am
10
10
42 2pm
33
26
22 5pm
18
16
14 8pm
13
12
12 11pm
11
11
1 2am
0
0
0 5am
0
0
0 8am
0
0
Station readings
12
8
8
8
CAMS model adj -44
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
27
25
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

48h · 1 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. Current PM2.5 concentration in Seattle is 2.0× the WHO annual guideline of 5 µg/m³.

38.3%
Humidity
48.2 km/h
Wind SSW
1018.5 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
42
10.12 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Seattle?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.510.12 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (25 stations within 25 km)
10.12
Median
4.39
Average
1.63
Low
16.4
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +6.2

What is the 7-day forecast for Seattle?

05-28
21.6° 12.0°
7.06 mm
05-29
24.4° 10.2°
12.06 mm
05-30
20.9° 8.6°
0.62 mm
05-31
22.6° 8.7°
06-01
20.1° 4.7°
06-02
26.7° 9.4°
06-03
19.0° 6.7°
0.88 mm
Both models agree Avg diff: 3.4°C

Where are air quality stations near Seattle?

11
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 2.6 µg/m³
28
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 6.7 µg/m³
20
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 4.8 µg/m³
36
Olive St, Seattle, Washington, USA
2.4 km PM2.5: 8.6 µg/m³
8
Seattle-16th Ave S
3.2 km PM2.5: 1.9 µg/m³
10
Belvidere
4.5 km 30.8°C 29.5% RH PM2.5: 2.5 µg/m³ PM10: 3.0 µg/m³
12
Seattle-23rd Ave SW
4.5 km PM2.5: 2.9 µg/m³
16
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 3.8 µg/m³
30
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 7.2 µg/m³
31
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 7.4 µg/m³

What cities are near Seattle?

27 Columbia City 23 Mercer Island 17 Kirkland 18 Bryn Mawr-Skyway 19 Bainbridge Island 13 Inglewood-Finn Hill 21 Burien 18 Tukwila 19 Renton 11 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 2026-05-28T21:46 UTC.