Air Quality in Fairfax, United States

Cloudy
10.7°C · 77.0% humidity
10.7°
Feels 10.7°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast
— 4pm
—
—
— 7pm
—
—
— 10pm
—
—
— 1am
—
—
— 4am
—
—
— 7am
—
—
— 10am
—
—
— 1pm
—
—

Air Quality Index Trend

46h · 22 stn

Fairfax's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

77.0%
Humidity
32.8 km/h
Wind NE
1026.9 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
20
4.92 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Fairfax?

Temperature & Precipitation

PM2.5 Trend

46h · 22 stations
PM2.54.92 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.0
Low
Station readings (4 stations within 25 km)
4.92
Median
4.93
Average
4.6
Low
5.29
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +1.6

What is the 7-day forecast for Fairfax?

10-20
17.2° 6.0°
6.31 mm
10-21
24.7° 6.9°
0.06 mm
10-22
20.7° 10.4°
0.13 mm
10-23
13.8° 5.2°
0.25 mm
10-24
17.6° 9.6°
0.19 mm
10-25
19.5° 6.4°
0.13 mm
10-26
15.7° 12.2°
21.75 mm
Both models agree Avg diff: 3.5°C

Where are air quality stations near Fairfax?

20
Lee District Park - Fairfax County, Northern Virginia, USA
19.3 km PM2.5: 4.8 µg/m³
20
Lee District Park - Fairfax County, Northern Virginia, USA
19.3 km PM2.5: 4.8 µg/m³
19
Aurora Hills Visitor Center, Northern Virginia, USA
21.4 km PM2.5: 4.6 µg/m³
19
Aurora Hills Visitor Center, Northern Virginia, USA
21.4 km PM2.5: 4.6 µg/m³
18
Aurora Hills Visitor Center, Northern Virginia, USA
21.4 km PM2.5: 4.3 µg/m³
19
Aurora Hills Visitor Center, Northern Virginia, USA
21.4 km PM2.5: 4.6 µg/m³
22
3414 Nebraska Ave NW
21.7 km PM2.5: 5.3 µg/m³
21
Aslin
24.9 km PM2.5: 5.0 µg/m³
18
Ashburn - Broad Run High School, Northern Virginia, USA
25.4 km PM2.5: 4.3 µg/m³
18
Ashburn - Broad Run High School, Northern Virginia, USA
25.4 km PM2.5: 4.3 µg/m³

What cities are near Fairfax?

20 Oakton 20 Burke 20 Vienna 20 Merrifield 20 Annandale 20 Idylwood 20 Tysons 20 West Falls Church 21 Wolf Trap 18 Centreville
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 2026-10-20T23:40 UTC.