Air Quality in Fairfax, United States
Overcast
19.8°C · 94.4% humidity
19.8°
Feels 19.8°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Fairfax's air quality — share it
AQI Forecast
25
2am
25
25
13
5am
16
21
23
8am
24
25
25
11am
33
26
26
2pm
27
27
27
5pm
27
27
27
8pm
34
54
54
11pm
54
54
Air Quality Index Trend
47h · 3 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
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
3.23 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Fairfax?
Temperature & Precipitation
PM2.5 Trend
47h · 3 stationsPM2.53.23 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
3.23
Median
3.25
Average
3.1
Low
3.4
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +2.8
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?
16
Lee District Park - Fairfax County, Northern Virginia, USA
34
Aurora Hills Visitor Center, Northern Virginia, USA
57
Ashburn - Broad Run High School, Northern Virginia, USA
What cities are near Fairfax?
Get AQI alerts for Fairfax
Notify me when air quality reaches:
Free · No account · Unsubscribe any time
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T09:29 UTC.