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)
24
Good
Port Townsend, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.93 μg/m³
0
55
155
255
425
605+
25.80 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
6.50 ppb
0
54
101
361
1250
2050+
0.10 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 33
Good
6.29μg/m³
PM2.5
33.23μg/m³
PM10
20.30ppb
O3
0.35ppb
SO2
9.22ppb
NO2
0.18ppm
CO
AQI 49
Good
9.16μg/m³
PM2.5
40.81μg/m³
PM10
20.33ppb
O3
0.41ppb
SO2
9.19ppb
NO2
0.18ppm
CO
AQI 18
Good
2.94μg/m³
PM2.5
13.13μg/m³
PM10
19.23ppb
O3
0.33ppb
SO2
14.67ppb
NO2
0.19ppm
CO
AQI 44
Good
7.64μg/m³
PM2.5
31.86μg/m³
PM10
19.74ppb
O3
0.36ppb
SO2
11.77ppb
NO2
0.19ppm
CO
AQI 52
Moderate
10.19μg/m³
PM2.5
45.62μg/m³
PM10
20.85ppb
O3
0.24ppb
SO2
13.85ppb
NO2
0.18ppm
CO
AQI 44
Good
7.53μg/m³
PM2.5
33.40μg/m³
PM10
19.85ppb
O3
0.28ppb
SO2
14.30ppb
NO2
0.18ppm
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 11:00:00 on 2025-10-24.
In the last 24 hours, the best air quality in Port Townsend, Washington was observed at 05:00:00 on 2025-10-23.
As of now, the AQI in Port Townsend, Washington is 33, 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 6.226 μg/m3.
The PM10 concentration in Port Townsend, Washington is 28.098 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Townsend, Washington is 0.139 ppm.
Currently, Port Townsend, Washington has a sulfur dioxide (SO2) concentration of 0.407 ppb.
The current ozone (O3) level in Port Townsend, Washington at the moment is 21.178 ppm.
Nitrogen dioxide (NO2) level in Port Townsend, Washington at the moment is 10.521 ppb.
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