What is the air quality in Merrifield today?

The current Air Quality Index (AQI) in Merrifield is 20 (Good). PM2.5 concentration is 4.78 µg/m³.

What is the temperature in Merrifield right now?

The current temperature in Merrifield is 10.7°C (feels like 10.7°C). Humidity is 77.0% and wind speed is 32.8 km/h.

Is it safe to go outside in Merrifield?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Merrifield, United States

Cloudy

10.7°C · 77.0% humidity

10.7°

Feels 10.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

16 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

46h · 22 stn

View full history →

Merrifield'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▲

4.78 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Merrifield?

Temperature & Precipitation

PM2.5 Trend

46h · 22 stations

PM2.54.78 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (16 stations within 25 km)

4.78

Median

4.73

Average

3.46

Low

5.59

High

PM2.5 µg/m³ · Model: 6.5 · Bias: +1.7

What is the 7-day forecast for Merrifield?

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 Merrifield?

3414 Nebraska Ave NW

14.1 km PM2.5: 5.3 µg/m³

Aurora Hills Visitor Center, Northern Virginia, USA

14.6 km PM2.5: 4.6 µg/m³

Aurora Hills Visitor Center, Northern Virginia, USA

14.6 km PM2.5: 4.6 µg/m³

Aurora Hills Visitor Center, Northern Virginia, USA

14.6 km PM2.5: 4.3 µg/m³

Aurora Hills Visitor Center, Northern Virginia, USA

14.6 km PM2.5: 4.6 µg/m³

Lee District Park - Fairfax County, Northern Virginia, USA

15.4 km PM2.5: 4.8 µg/m³

Lee District Park - Fairfax County, Northern Virginia, USA

15.4 km PM2.5: 4.8 µg/m³

Aslin

17.4 km PM2.5: 5.0 µg/m³

Center City Shaw Campus

18.1 km PM2.5: 5.2 µg/m³

LAMB

18.8 km PM2.5: 4.4 µg/m³

What cities are near Merrifield?

20 Idylwood 20 West Falls Church 20 Vienna 20 Tysons 20 Annandale 20 Oakton 20 Fairfax 20 McLean 20 Baileys Crossroads 21 Wolf Trap

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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 2026-10-20T23:40 UTC.