Stay updated with real-time air quality in Arlington, 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)
49
Good
Arlington, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.10 μg/m³
0
55
155
255
425
605+
28.86 ppb
0
55
71
86
201
201+
0.25 ppb
0
36
76
186
605
1005+
13.29 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Arlington, Washington
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AQI 49
Good
9.16μg/m³
PM2.5
40.07μg/m³
PM10
17.65ppb
O3
0.27ppb
SO2
12.53ppb
NO2
0.17ppm
CO
AQI 54
Moderate
11.31μg/m³
PM2.5
36.23μg/m³
PM10
18.39ppb
O3
0.27ppb
SO2
11.80ppb
NO2
0.17ppm
CO
AQI 52
Moderate
10.16μg/m³
PM2.5
31.89μg/m³
PM10
16.58ppb
O3
0.32ppb
SO2
12.92ppb
NO2
0.17ppm
CO
AQI 22
Good
4.05μg/m³
PM2.5
18.23μg/m³
PM10
20.10ppb
O3
0.23ppb
SO2
5.49ppb
NO2
0.15ppm
CO
AQI 49
Good
8.99μg/m³
PM2.5
29.11μg/m³
PM10
18.86ppb
O3
0.37ppb
SO2
12.57ppb
NO2
0.16ppm
CO
AQI 56
Moderate
12.42μg/m³
PM2.5
17.48μg/m³
PM10
14.75ppb
O3
0.38ppb
SO2
13.24ppb
NO2
0.17ppm
CO
The air quality data for Washington, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Arlington, Washington are available every hour.
Arlington, Washington experienced its worst air quality at 06:00:00, 2025-10-23.
The best air quality in Arlington, Washington was observed at 09:00:00 on 2025-10-24.
The air quality in Arlington, Washington right now is Good, with an AQI of 49.
In Arlington, Washington, PM2.5 is the most frequently found pollutant.
When air quality in Arlington, Washington is compromised, staying indoors and wearing a mask can reduce health risks.
Arlington, Washington currently has a PM2.5 concentration of 9.033 μg/m3.
Arlington, Washington currently has a PM10 concentration of 38.096 μg/m3.
The current carbon monoxide (CO) level in Arlington, Washington is 0.162 ppm.
The current sulfur dioxide (SO2) concentration in Arlington, Washington is 0.248 ppb.
Arlington, Washington currently has an ozone (O3) concentration of 28.861 ppm.
The current level of nitrogen dioxide (NO2) in Arlington, Washington is 13.29 ppb.
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