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)
16
Good
Port Townsend, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.08 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.88 μg/m³
0
55
155
255
425
605+
16.34 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
7.46 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Port Townsend, Washington
Port Townsend, Washington
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AQI 16
Good
2.95μg/m³
PM2.5
13.88μg/m³
PM10
11.36ppb
O3
0.43ppb
SO2
7.88ppb
NO2
0.19ppm
CO
AQI 16
Good
2.81μg/m³
PM2.5
11.14μg/m³
PM10
16.35ppb
O3
0.45ppb
SO2
5.95ppb
NO2
0.18ppm
CO
AQI 16
Good
2.56μg/m³
PM2.5
11.63μg/m³
PM10
15.80ppb
O3
0.43ppb
SO2
11.41ppb
NO2
0.22ppm
CO
AQI 15
Good
1.47μg/m³
PM2.5
6.94μg/m³
PM10
15.94ppb
O3
0.49ppb
SO2
11.48ppb
NO2
0.22ppm
CO
AQI 18
Good
1.82μg/m³
PM2.5
8.09μg/m³
PM10
18.70ppb
O3
0.41ppb
SO2
6.27ppb
NO2
0.20ppm
CO
AQI 17
Good
2.10μg/m³
PM2.5
9.37μg/m³
PM10
17.69ppb
O3
0.42ppb
SO2
8.45ppb
NO2
0.21ppm
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 2026-06-08.
In the last 24 hours, the best air quality in Port Townsend, Washington was observed at 05:00:00 on 2026-06-08.
As of now, the AQI in Port Townsend, Washington is 16, 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 3.077 μg/m3.
The PM10 concentration in Port Townsend, Washington is 13.884 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Townsend, Washington is 0.187 ppm.
Currently, Port Townsend, Washington has a sulfur dioxide (SO2) concentration of 0.503 ppb.
The current ozone (O3) level in Port Townsend, Washington at the moment is 16.336 ppm.
Nitrogen dioxide (NO2) level in Port Townsend, Washington at the moment is 7.46 ppb.
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