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)
33
Good
Fairfax, Virginia
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.30 μg/m³
0
55
155
255
425
605+
30.26 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
12.36 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Fairfax, Virginia
Fairfax, Virginia
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AQI 33
Good
5.92μg/m³
PM2.5
19.32μg/m³
PM10
30.02ppb
O3
0.65ppb
SO2
14.04ppb
NO2
0.18ppm
CO
AQI 33
Good
6.00μg/m³
PM2.5
19.30μg/m³
PM10
30.26ppb
O3
0.61ppb
SO2
12.36ppb
NO2
0.18ppm
CO
AQI 33
Good
5.87μg/m³
PM2.5
22.41μg/m³
PM10
26.45ppb
O3
0.58ppb
SO2
9.57ppb
NO2
0.18ppm
CO
AQI 33
Good
5.67μg/m³
PM2.5
19.27μg/m³
PM10
30.30ppb
O3
0.65ppb
SO2
13.90ppb
NO2
0.18ppm
CO
AQI 33
Good
6.00μg/m³
PM2.5
19.30μg/m³
PM10
30.26ppb
O3
0.61ppb
SO2
12.36ppb
NO2
0.18ppm
CO
AQI 33
Good
6.05μg/m³
PM2.5
24.69μg/m³
PM10
30.18ppb
O3
0.63ppb
SO2
15.61ppb
NO2
0.17ppm
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 04:00:00 on 2026-01-22.
The best air quality in Fairfax, Virginia was recorded at 02:00:00 on 2026-01-23.
The real-time air quality index in Fairfax, Virginia is 33, currently categorized as Good.
The most common pollutant in Fairfax, Virginia is PM2.5.
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 6.003 μg/m3.
The current PM10 levels in Fairfax, Virginia are 19.296 μg/m3.
The current carbon monoxide (CO) level in Fairfax, Virginia is 0.18 ppm.
The current sulfur dioxide (SO2) levels in Fairfax, Virginia are 0.609 ppb.
The current ozone (O3) levels at Fairfax, Virginia is 30.264 ppm.
The current nitrogen dioxide (NO2) levels at Fairfax, Virginia is 12.361 ppb.
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