Stay updated with real-time air quality in Port Townsend, Washington featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
27
Good
Port Townsend, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.86 μg/m³
0
55
155
255
425
605+
23.27 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
4.14 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Port Townsend, Washington
Port Townsend, Washington
Scroll To Air Quality MapLoading...
AQI 32
Good
3.06μg/m³
PM2.5
33.67μg/m³
PM10
34.63ppb
O3
0.30ppb
SO2
3.88ppb
NO2
0.14ppm
CO
AQI 49
Good
8.79μg/m³
PM2.5
52.55μg/m³
PM10
25.49ppb
O3
0.32ppb
SO2
3.19ppb
NO2
0.14ppm
CO
AQI 21
Good
1.47μg/m³
PM2.5
6.86μg/m³
PM10
22.91ppb
O3
0.34ppb
SO2
4.11ppb
NO2
0.16ppm
CO
AQI 49
Good
9.12μg/m³
PM2.5
39.56μg/m³
PM10
21.20ppb
O3
0.35ppb
SO2
4.10ppb
NO2
0.15ppm
CO
AQI 27
Good
4.68μg/m³
PM2.5
20.66μg/m³
PM10
24.93ppb
O3
0.32ppb
SO2
4.09ppb
NO2
0.16ppm
CO
AQI 23
Good
3.42μg/m³
PM2.5
15.96μg/m³
PM10
24.53ppb
O3
0.33ppb
SO2
4.16ppb
NO2
0.16ppm
CO
Air quality and pollutant data for Washington, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Port Townsend, Washington is updated every hour for accuracy.
In the past 24 hours, the air quality in Port Townsend, Washington was at its worst at 03:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Port Townsend, Washington was observed at 06:00:00 on 2026-07-23.
As of now, the AQI in Port Townsend, Washington is 27, indicating Good conditions.
Port Townsend, Washington air has the highest levels of PM2.5.
Poor air quality in Port Townsend, Washington means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Port Townsend, Washington are currently 5.267 μg/m3.
The PM10 concentration in Port Townsend, Washington is 22.855 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Townsend, Washington is 0.141 ppm.
Currently, Port Townsend, Washington has a sulfur dioxide (SO2) concentration of 0.367 ppb.
The current ozone (O3) level in Port Townsend, Washington at the moment is 23.265 ppm.
Nitrogen dioxide (NO2) level in Port Townsend, Washington at the moment is 4.141 ppb.
All Rights Reserved © Ambee Inc. 2025