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
3.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.18 μg/m³
0
55
155
255
425
605+
16.25 ppb
0
55
71
86
201
201+
0.72 ppb
0
36
76
186
605
1005+
6.78 ppb
0
54
101
361
1250
2050+
0.18 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
4.01μg/m³
PM2.5
16.53μg/m³
PM10
22.23ppb
O3
0.63ppb
SO2
8.78ppb
NO2
0.22ppm
CO
AQI 38
Good
6.84μg/m³
PM2.5
27.49μg/m³
PM10
12.30ppb
O3
0.61ppb
SO2
8.78ppb
NO2
0.18ppm
CO
AQI 17
Good
2.63μg/m³
PM2.5
12.05μg/m³
PM10
17.91ppb
O3
0.67ppb
SO2
8.76ppb
NO2
0.21ppm
CO
AQI 32
Good
5.20μg/m³
PM2.5
34.81μg/m³
PM10
15.84ppb
O3
0.65ppb
SO2
8.59ppb
NO2
0.20ppm
CO
AQI 52
Moderate
10.22μg/m³
PM2.5
45.76μg/m³
PM10
14.72ppb
O3
0.63ppb
SO2
7.02ppb
NO2
0.21ppm
CO
AQI 44
Good
7.50μg/m³
PM2.5
33.56μg/m³
PM10
16.27ppb
O3
0.65ppb
SO2
7.86ppb
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 2026-10-22.
In the last 24 hours, the best air quality in Port Townsend, Washington was observed at 08:00:00 on 2026-10-22.
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 3.036 μg/m3.
The PM10 concentration in Port Townsend, Washington is 12.181 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Townsend, Washington is 0.185 ppm.
Currently, Port Townsend, Washington has a sulfur dioxide (SO2) concentration of 0.719 ppb.
The current ozone (O3) level in Port Townsend, Washington at the moment is 16.247 ppm.
Nitrogen dioxide (NO2) level in Port Townsend, Washington at the moment is 6.778 ppb.
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