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
3.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.01 μg/m³
0
55
155
255
425
605+
16.23 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
5.43 ppb
0
54
101
361
1250
2050+
0.17 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 22
Good
4.20μg/m³
PM2.5
16.40μg/m³
PM10
19.92ppb
O3
0.37ppb
SO2
3.73ppb
NO2
0.15ppm
CO
AQI 22
Good
4.08μg/m³
PM2.5
17.92μg/m³
PM10
19.88ppb
O3
0.38ppb
SO2
4.23ppb
NO2
0.16ppm
CO
AQI 17
Good
1.82μg/m³
PM2.5
9.46μg/m³
PM10
18.01ppb
O3
0.40ppb
SO2
3.95ppb
NO2
0.13ppm
CO
AQI 22
Good
4.45μg/m³
PM2.5
16.42μg/m³
PM10
16.23ppb
O3
0.43ppb
SO2
4.61ppb
NO2
0.13ppm
CO
AQI 38
Good
7.14μg/m³
PM2.5
31.25μg/m³
PM10
15.35ppb
O3
0.39ppb
SO2
3.61ppb
NO2
0.14ppm
CO
AQI 27
Good
4.91μg/m³
PM2.5
22.03μg/m³
PM10
16.28ppb
O3
0.40ppb
SO2
3.84ppb
NO2
0.14ppm
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 01:00:00 on 2026-09-07.
In the last 24 hours, the best air quality in Port Townsend, Washington was observed at 10:00:00 on 2026-09-07.
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 3.105 μg/m3.
The PM10 concentration in Port Townsend, Washington is 14.01 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Townsend, Washington is 0.175 ppm.
Currently, Port Townsend, Washington has a sulfur dioxide (SO2) concentration of 0.387 ppb.
The current ozone (O3) level in Port Townsend, Washington at the moment is 16.226 ppm.
Nitrogen dioxide (NO2) level in Port Townsend, Washington at the moment is 5.433 ppb.
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