Air Quality in Fairfax, United States
Overcast
19.8°C · 94.4% humidity
19.8°
Feels 19.8°
11
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Fairfax's air quality — share it
AQI Forecast
25
6am
27
27
11
9am
16
19
28
12pm
23
24
25
3pm
25
26
26
6pm
26
27
34
9pm
54
54
54
12am
54
54
54
3am
54
54
Air Quality Index Trend
47h · 2 stnFairfax's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
94.4%
Humidity
18.0 km/h
Wind SSW
1015.0 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
2.6 µg/m³
PM10▲
13.7 µg/m³
050100150200300500
What is the weather forecast for Fairfax?
Temperature & Precipitation
PM2.5 Trend
47h · 2 stationsPM2.52.6 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
Station readings (2 stations within 25 km)
2.6
Median
2.6
Average
2.6
Low
2.6
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +3.7
What is the 7-day forecast for Fairfax?
06-09
31.5° 13.6°
0.19 mm
06-10
30.7° 23.3°
5.38 mm
06-11
25.3° 12.5°
06-12
29.2° 17.4°
0.25 mm
06-13
30.3° 21.4°
0.31 mm
06-14
26.3° 19.7°
3.38 mm
06-15
24.6° 13.9°
0.44 mm
Both models agree
Avg diff: 5.5°C
Where are air quality stations near Fairfax?
43
Lee District Park - Fairfax County, Northern Virginia, USA
37
Aurora Hills Visitor Center, Northern Virginia, USA
41
Ashburn - Broad Run High School, Northern Virginia, USA
What cities are near Fairfax?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T13:29 UTC.