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)
39
Good
Arlington, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.65 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.22 μg/m³
0
55
155
255
425
605+
41.63 ppb
0
55
71
86
201
201+
0.13 ppb
0
36
76
186
605
1005+
2.82 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Arlington, Washington
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AQI 33
Good
6.49μg/m³
PM2.5
28.92μg/m³
PM10
34.74ppb
O3
0.12ppb
SO2
4.02ppb
NO2
0.10ppm
CO
AQI 33
Good
1.81μg/m³
PM2.5
5.75μg/m³
PM10
36.05ppb
O3
0.12ppb
SO2
3.51ppb
NO2
0.10ppm
CO
AQI 33
Good
5.78μg/m³
PM2.5
19.61μg/m³
PM10
35.40ppb
O3
0.12ppb
SO2
3.72ppb
NO2
0.10ppm
CO
AQI 37
Good
1.02μg/m³
PM2.5
4.07μg/m³
PM10
40.31ppb
O3
0.12ppb
SO2
2.31ppb
NO2
0.10ppm
CO
AQI 40
Good
3.46μg/m³
PM2.5
9.24μg/m³
PM10
43.02ppb
O3
0.14ppb
SO2
2.75ppb
NO2
0.10ppm
CO
AQI 34
Good
5.59μg/m³
PM2.5
7.09μg/m³
PM10
36.52ppb
O3
0.12ppb
SO2
3.02ppb
NO2
0.10ppm
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 09:00:00, 2026-03-12.
The best air quality in Arlington, Washington was observed at 04:00:00 on 2026-03-12.
The air quality in Arlington, Washington right now is Good, with an AQI of 39.
In Arlington, Washington, O3 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 3.654 μg/m3.
Arlington, Washington currently has a PM10 concentration of 16.217 μg/m3.
The current carbon monoxide (CO) level in Arlington, Washington is 0.1 ppm.
The current sulfur dioxide (SO2) concentration in Arlington, Washington is 0.133 ppb.
Arlington, Washington currently has an ozone (O3) concentration of 41.625 ppm.
The current level of nitrogen dioxide (NO2) in Arlington, Washington is 2.823 ppb.
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