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)
31
Good
Port Townsend, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.83 μg/m³
0
55
155
255
425
605+
32.74 ppb
0
55
71
86
201
201+
0.14 ppb
0
36
76
186
605
1005+
2.68 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Port Townsend, Washington
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AQI 32
Good
2.52μg/m³
PM2.5
9.12μg/m³
PM10
34.74ppb
O3
0.14ppb
SO2
2.65ppb
NO2
0.27ppm
CO
AQI 33
Good
2.19μg/m³
PM2.5
8.96μg/m³
PM10
36.30ppb
O3
0.14ppb
SO2
2.29ppb
NO2
0.26ppm
CO
AQI 31
Good
2.02μg/m³
PM2.5
8.20μg/m³
PM10
32.77ppb
O3
0.13ppb
SO2
10.90ppb
NO2
0.30ppm
CO
AQI 32
Good
2.19μg/m³
PM2.5
9.27μg/m³
PM10
35.24ppb
O3
0.13ppb
SO2
5.49ppb
NO2
0.30ppm
CO
AQI 31
Good
1.51μg/m³
PM2.5
6.07μg/m³
PM10
33.90ppb
O3
0.13ppb
SO2
3.08ppb
NO2
0.29ppm
CO
AQI 31
Good
1.67μg/m³
PM2.5
6.78μg/m³
PM10
33.61ppb
O3
0.13ppb
SO2
7.02ppb
NO2
0.30ppm
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 08:00:00 on 2026-03-15.
In the last 24 hours, the best air quality in Port Townsend, Washington was observed at 04:00:00 on 2026-03-15.
As of now, the AQI in Port Townsend, Washington is 31, indicating Good conditions.
Port Townsend, Washington air has the highest levels of O3.
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 3.066 μg/m3.
The PM10 concentration in Port Townsend, Washington is 13.83 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Townsend, Washington is 0.259 ppm.
Currently, Port Townsend, Washington has a sulfur dioxide (SO2) concentration of 0.139 ppb.
The current ozone (O3) level in Port Townsend, Washington at the moment is 32.74 ppm.
Nitrogen dioxide (NO2) level in Port Townsend, Washington at the moment is 2.682 ppb.
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