Stay updated with real-time air quality in Fairfax, Virginia 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)
46
Good
Fairfax, Virginia
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
33.29 μg/m³
0
55
155
255
425
605+
50.23 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
8.79 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Fairfax, Virginia
Fairfax, Virginia
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AQI 49
Good
8.62μg/m³
PM2.5
36.70μg/m³
PM10
49.35ppb
O3
0.68ppb
SO2
8.66ppb
NO2
0.23ppm
CO
AQI 46
Good
7.97μg/m³
PM2.5
33.29μg/m³
PM10
50.23ppb
O3
0.66ppb
SO2
8.79ppb
NO2
0.23ppm
CO
AQI 58
Moderate
7.86μg/m³
PM2.5
32.94μg/m³
PM10
57.11ppb
O3
0.64ppb
SO2
4.55ppb
NO2
0.23ppm
CO
AQI 49
Good
8.63μg/m³
PM2.5
36.57μg/m³
PM10
49.58ppb
O3
0.68ppb
SO2
7.32ppb
NO2
0.23ppm
CO
AQI 46
Good
7.97μg/m³
PM2.5
33.29μg/m³
PM10
50.23ppb
O3
0.66ppb
SO2
8.79ppb
NO2
0.23ppm
CO
AQI 54
Moderate
8.31μg/m³
PM2.5
35.38μg/m³
PM10
55.91ppb
O3
0.74ppb
SO2
6.26ppb
NO2
0.22ppm
CO
Air quality measurements for Virginia, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Fairfax, Virginia is updated on an hourly basis.
The worst air quality in Fairfax, Virginia was recorded at 11:00:00 on 2026-04-23.
The best air quality in Fairfax, Virginia was recorded at 02:00:00 on 2026-04-23.
The real-time air quality index in Fairfax, Virginia is 46, currently categorized as Good.
The most common pollutant in Fairfax, Virginia is O3.
If the air quality in Fairfax, Virginia is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Fairfax, Virginia at present are 7.966 μg/m3.
The current PM10 levels in Fairfax, Virginia are 33.292 μg/m3.
The current carbon monoxide (CO) level in Fairfax, Virginia is 0.231 ppm.
The current sulfur dioxide (SO2) levels in Fairfax, Virginia are 0.659 ppb.
The current ozone (O3) levels at Fairfax, Virginia is 50.225 ppm.
The current nitrogen dioxide (NO2) levels at Fairfax, Virginia is 8.793 ppb.
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