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)
27
Good
Arlington, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.25 μg/m³
0
55
155
255
425
605+
8.41 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
6.52 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Arlington, Washington
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AQI 49
Good
8.99μg/m³
PM2.5
40.18μg/m³
PM10
9.29ppb
O3
0.48ppb
SO2
8.02ppb
NO2
0.25ppm
CO
AQI 44
Good
8.36μg/m³
PM2.5
33.42μg/m³
PM10
9.09ppb
O3
0.49ppb
SO2
7.56ppb
NO2
0.25ppm
CO
AQI 44
Good
7.57μg/m³
PM2.5
31.23μg/m³
PM10
9.19ppb
O3
0.51ppb
SO2
8.80ppb
NO2
0.25ppm
CO
AQI 44
Good
7.70μg/m³
PM2.5
33.98μg/m³
PM10
8.48ppb
O3
0.37ppb
SO2
7.50ppb
NO2
0.26ppm
CO
AQI 27
Good
4.59μg/m³
PM2.5
24.62μg/m³
PM10
11.43ppb
O3
0.44ppb
SO2
6.99ppb
NO2
0.29ppm
CO
AQI 22
Good
4.50μg/m³
PM2.5
11.43μg/m³
PM10
8.95ppb
O3
0.54ppb
SO2
9.57ppb
NO2
0.26ppm
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 05:00:00, 2026-10-22.
The best air quality in Arlington, Washington was observed at 01:00:00 on 2026-10-22.
The air quality in Arlington, Washington right now is Good, with an AQI of 27.
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 4.7 μg/m3.
Arlington, Washington currently has a PM10 concentration of 19.251 μg/m3.
The current carbon monoxide (CO) level in Arlington, Washington is 0.206 ppm.
The current sulfur dioxide (SO2) concentration in Arlington, Washington is 0.399 ppb.
Arlington, Washington currently has an ozone (O3) concentration of 8.406 ppm.
The current level of nitrogen dioxide (NO2) in Arlington, Washington is 6.516 ppb.
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