AddAir quality in King County
Air quality index (AQI⁺) and PM2.5 air pollution in King County • 17:00, May 20 Local time
17
US AQI⁺Good
Main pollutant:
PM2.5
3.1 µg/m³
12°
6 km/h
78 %
Hourly forecast
King County air quality index (AQI⁺) forecast
Daily forecast
King County air quality index (AQI⁺) forecast
| Today | 63 |  | 19° 8° |  13 km/h | 59% |
| Thu | 47 |  | 19° 10° | 10 km/h | 61% |
| Fri | 44 | | 20° 7° | 8 km/h | 60% |
Air pollutants
What is the current air quality in King County?
PM2.5 concentration currently meets the WHO annual PM2.5 guideline.
Health recommendations
 Enjoy outdoor activities |
 Open your windows to bring clean, fresh air indoors Get a monitor |
Protect yourself from air pollution in King County
Monitor the air you breathe
Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.
Medical grade air purifiers
Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.
Powerful, stylish air purifiers
Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.
Pollen
What is the pollen count in King County today?
Index
High
 Tree Low | 25% |
 Grass High | 75% |
 Weed Moderate | 50% |
Source:
wetter.comHealth recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Pollen
What is the pollen count in King County today?
Index
High
Tree Low | 25% |
Grass High | 75% |
Weed Moderate | 50% |
Source:
wetter.comProtect yourself from air pollution in King County
Monitor the air you breathe
Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.
Medical grade air purifiers
Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.
Powerful, stylish air purifiers
Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.
Most polluted locations near King County
Worldwide AQI⁺ ranking
Station ranking
Real-time AQI⁺ station ranking for stations in King County
City ranking
Real-time USA AQI⁺ city ranking
Historic air quality near King County
History
Historic air quality graph for King County
Historic air quality near King County
History
Historic air quality graph for King County
Most polluted locations near King County
Worldwide AQI⁺ rankingStation ranking
Real-time AQI⁺ station ranking for stations in King County
City ranking
Real-time USA AQI⁺ city ranking
Measure your own air quality
Get a monitor and contribute air quality data in your city.
Where is the cleanest air quality in King County?
- McClone Construction5
- Stillwater Hill station6
- Tolt Highlands 26
- Lake Margaret11
- SW TigerMt11
- Waterbrook11
- Ames Lake Forest/Tree Farm12
- I-90 exit 34 station12
- Summit West14
- 322nd Avenue Northeast17
- Tolt Highlands17
- 311th NE & NE 139th Duvall18
- Southeast 32nd Street18
- 6214 284th Way Northeast19
- Stillwater Hill19
- 29035 NE 22nd St20
- Erste Strasse21
- 174th Avenue Southeast22
- Cumberland Kanasket Road Southeast22
- 12339-12347 202nd Pl SE23
- 337th Place Northeast23
- Enumclaw Mud Mt (SO)23
- Fall City23
- River Bend23
- Southeast 100th Street23
- 22612-22400 SE 329th St24
- Ames Lake East24
- SE 366th Pl24
- RSD - Tolt25
- Valley Camp25
