What is the air quality in Gaithersburg today?

The current Air Quality Index (AQI) in Gaithersburg is 29 (Good). PM2.5 concentration is 6.89 µg/m³.

What is the temperature in Gaithersburg right now?

The current temperature in Gaithersburg is 28.5°C (feels like 30.5°C). Humidity is 47.2% and wind speed is 44.3 km/h.

Is it safe to go outside in Gaithersburg?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 7.9 (Very High).

Air Quality in Gaithersburg, United States

Windy

28.5°C · 47.2% humidity

28.5°

Feels 30.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

25 1pm

29 4pm

27 7pm

27 10pm

27 1am

25 4am

25 7am

25 10am

Air Quality Index Trend

47h · 4 stn

View full history →

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

47.2%

Humidity

44.3 km/h

Wind NE

1013.6 hPa

Pressure

7.9

UV Very High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

6.89 µg/m³

PM10▲

34.3 µg/m³

050100150200300500

What is the weather forecast for Gaithersburg?

Temperature & Precipitation

PM2.5 Trend

47h · 4 stations

PM2.56.89 µg/m³ ✓ WHO

Good

PM1034.3 µg/m³

Good

UV INDEX7.9

Very High

Station readings (2 stations within 25 km)

6.89

Median

7.59

Average

6.7

Low

8.47

High

PM2.5 µg/m³ · Model: 16.55 · Bias: +9.7

What is the 7-day forecast for Gaithersburg?

07-21

28.5° 21.0°

07-22

28.4° 19.6°

0.25 mm

07-23

28.7° 18.1°

4.69 mm

07-24

25.6° 16.0°

0.13 mm

07-25

22.3° 20.1°

5.88 mm

07-26

26.6° 18.2°

6.31 mm

07-27

24.5° 21.9°

0.06 mm

Both models agree Avg diff: 3.6°C

Where are air quality stations near Gaithersburg?

Center City Brightwood Campus

25.0 km PM2.5: 8.5 µg/m³

Friendship Online

25.1 km PM2.5: 13.2 µg/m³

3414 Nebraska Ave NW

25.3 km PM2.5: 8.1 µg/m³

LAMB

25.8 km PM2.5: 7.6 µg/m³

Friendship Ideal

25.8 km PM2.5: 9.0 µg/m³

Latin PCS 2nd St. Campus

26.6 km PM2.5: 9.1 µg/m³

Latin PCS Cooper Campus

28.0 km PM2.5: 8.2 µg/m³

Ashburn - Broad Run High School, Northern Virginia, USA

28.1 km PM2.5: 8.2 µg/m³

Savannah Terrace SE

29.5 km PM2.5: 7.4 µg/m³

Lee Montessori Brookland

29.7 km PM2.5: 8.6 µg/m³

What cities are near Gaithersburg?

28 Montgomery Village 29 Redland 28 Germantown 32 Rockville 30 North Potomac 30 Olney 36 North Bethesda 33 Aspen Hill 36 Potomac 28 Damascus

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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 2026-07-21T20:10 UTC.