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)
34
Good
Fairfax, Virginia
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.53 μg/m³
0
55
155
255
425
605+
37.11 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
3.47 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Fairfax, Virginia
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AQI 38
Good
5.29μg/m³
PM2.5
15.44μg/m³
PM10
41.25ppb
O3
0.57ppb
SO2
3.94ppb
NO2
0.15ppm
CO
AQI 58
Moderate
11.19μg/m³
PM2.5
69.96μg/m³
PM10
40.49ppb
O3
0.56ppb
SO2
3.99ppb
NO2
0.15ppm
CO
AQI 52
Moderate
10.32μg/m³
PM2.5
53.52μg/m³
PM10
41.04ppb
O3
0.52ppb
SO2
2.45ppb
NO2
0.15ppm
CO
AQI 37
Good
4.39μg/m³
PM2.5
10.28μg/m³
PM10
40.39ppb
O3
0.60ppb
SO2
3.85ppb
NO2
0.15ppm
CO
AQI 58
Moderate
11.19μg/m³
PM2.5
69.96μg/m³
PM10
40.49ppb
O3
0.56ppb
SO2
3.99ppb
NO2
0.15ppm
CO
AQI 34
Good
6.32μg/m³
PM2.5
25.45μg/m³
PM10
36.83ppb
O3
0.63ppb
SO2
4.21ppb
NO2
0.14ppm
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 06:00:00 on 2026-03-09.
The best air quality in Fairfax, Virginia was recorded at 02:00:00 on 2026-03-09.
The real-time air quality index in Fairfax, Virginia is 34, 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 5.275 μg/m3.
The current PM10 levels in Fairfax, Virginia are 26.532 μg/m3.
The current carbon monoxide (CO) level in Fairfax, Virginia is 0.161 ppm.
The current sulfur dioxide (SO2) levels in Fairfax, Virginia are 0.483 ppb.
The current ozone (O3) levels at Fairfax, Virginia is 37.111 ppm.
The current nitrogen dioxide (NO2) levels at Fairfax, Virginia is 3.471 ppb.
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