Air Quality in Seattle, United States

Cloudy
15.0°C · 70.0% humidity
15.0°
Feels 15.0°
62
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
23 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
57 12pm
58
65
62 3pm
58
58
58 6pm
58
58
58 9pm
58
58
58 12am
58
58
58 3am
58
58
58 6am
58
38
38 9am
38
38
Station readings
57
58
65
58
CAMS model adj +4
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
34
34
34
AD 728×90

Air Quality Index Trend

48h · 17 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 1.1× the WHO 24-hour guideline of 15 µg/m³.

70.0%
Humidity
32.8 km/h
Wind S
1017.1 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
62
17.11 µg/m³
PM10
38
41.15 µg/m³
050100150200300500

What is the weather forecast for Seattle?

Temperature & Precipitation

PM2.5 Trend

48h · 17 stations
PM2.517.11 µg/m³ ×1.1 WHO
Moderate
PM1041.15 µg/m³
Good
UV INDEX12.9
Extreme
AD 300×250
Station readings (23 stations within 25 km)
17.11
Median
19.95
Average
0.84
Low
51.3
High
PM2.5 µg/m³ · Model: 20.3 · Bias: +3.2

What is the 7-day forecast for Seattle?

08-03
29.5° 9.3°
0.06 mm
08-04
25.0° 10.5°
0.06 mm
08-05
29.3° 10.6°
08-06
25.1° 13.6°
0.31 mm
08-07
27.3° 12.2°
08-08
24.8° 9.2°
0.06 mm
08-09
23.7° 8.9°
Both models agree Avg diff: 4.6°C

Where are air quality stations near Seattle?

62
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 17.3 µg/m³
53
10th and Weller, Seattle, Washington, USA
1.4 km PM2.5: 13.1 µg/m³
61
Seattle-16th Ave S
3.2 km PM2.5: 17.0 µg/m³
8
Belvidere
4.5 km 30.0°C 31.0% RH PM2.5: 1.8 µg/m³ PM10: 1.9 µg/m³
65
Seattle-23rd Ave SW
4.5 km PM2.5: 18.6 µg/m³
61
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 16.9 µg/m³
66
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 19.2 µg/m³
62
Beacon Hill, Seattle, Washington, USA
4.6 km PM2.5: 17.3 µg/m³
68
Duwamish, Seattle, Washington, USA
5.2 km PM2.5: 20.2 µg/m³
116
Wallingford Playfield
5.9 km 35.7°C 26.5% RH PM2.5: 41.6 µg/m³ PM10: 49.6 µg/m³

What cities are near Seattle?

65 Columbia City 72 Mercer Island 71 Kirkland 67 Bryn Mawr-Skyway 63 Bainbridge Island 67 Inglewood-Finn Hill 61 Burien 64 Tukwila 68 Renton 64 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 2026-08-07T22:16 UTC.