What is the air quality in Marlborough today?

The current Air Quality Index (AQI) in Marlborough is 42 (Good). PM2.5 concentration is 10.1 µg/m³.

What is the temperature in Marlborough right now?

The current temperature in Marlborough is 15.2°C (feels like 15.2°C). Humidity is 98.2% and wind speed is 70.4 km/h.

Is it safe to go outside in Marlborough?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 2.2 (Moderate).

Air Quality in Marlborough, United States

Rain

15.2°C · 98.2% humidity

15.2°

Feels 15.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

34 3pm

42 6pm

30 9pm

25 12am

24 3am

24 6am

24 9am

24 12pm

Air Quality Index Trend

48h · 1 stn

View full history →

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

98.2%

Humidity

70.4 km/h

Wind NNE

1013.4 hPa

Pressure

2.2

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

10.1 µg/m³

PM10

34.3 µg/m³

050100150200300500

What is the weather forecast for Marlborough?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station

PM2.510.1 µg/m³ ✓ WHO

Good

PM1034.3 µg/m³

Good

UV INDEX2.2

Moderate

Station readings (1 station within 25 km)

10.1

Median

10.1

Average

10.1

Low

10.1

High

PM2.5 µg/m³ · Model: 17.65 · Bias: +7.6

What is the 7-day forecast for Marlborough?

07-21

25.3° 18.5°

2.25 mm

07-22

21.1° 13.7°

14.19 mm

07-23

26.6° 15.5°

1.31 mm

07-24

28.7° 14.4°

2.13 mm

07-25

32.0° 19.9°

3.88 mm

07-26

22.6° 16.4°

3.62 mm

07-27

28.5° 13.9°

2.12 mm

Both models agree Avg diff: 3.2°C

Where are air quality stations near Marlborough?

Worcester Summer St

21.9 km PM2.5: 20.2 µg/m³

What cities are near Marlborough?

52 Framingham Center 51 Ashland 64 Sudbury 52 Framingham 42 Shrewsbury 55 Natick 53 Acton 42 Grafton 55 Wellesley 42 Worcester

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-07-21T22:04 UTC.