What is the air quality in Winthrop today?

The current Air Quality Index (AQI) in Winthrop is 20 (Good). PM2.5 concentration is 4.91 µg/m³.

What is the temperature in Winthrop right now?

The current temperature in Winthrop is 15.3°C (feels like 15.3°C). Humidity is 49.0% and wind speed is 59.0 km/h.

Is it safe to go outside in Winthrop?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 10.9 (Extreme).

Air Quality in Winthrop, United States

Windy

15.3°C · 49.0% humidity

15.3°

Feels 15.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

6 stations

Nearby Monitoring Stations

AQI Forecast

24 12pm

20 3pm

23 6pm

24 9pm

25 12am

24 3am

24 6am

25 9am

Air Quality Index Trend

46h · 9 stn

View full history →

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

49.0%

Humidity

59.0 km/h

Wind ESE

1022.0 hPa

Pressure

10.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.91 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Winthrop?

Temperature & Precipitation

PM2.5 Trend

46h · 9 stations

PM2.54.91 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX10.9

Extreme

Station readings (6 stations within 25 km)

4.91

Median

6.03

Average

3.8

Low

9.4

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +1.1

What is the 7-day forecast for Winthrop?

05-29

20.7° 11.9°

0.13 mm

05-30

23.7° 9.5°

10.06 mm

05-31

25.6° 10.7°

0.19 mm

06-01

19.8° 9.1°

06-02

20.5° 13.1°

0.56 mm

06-03

23.9° 14.4°

06-04

18.5° 17.3°

0.25 mm

Both models agree Avg diff: 4.6°C

Where are air quality stations near Winthrop?

Boston

6.6 km PM2.5: 2.2 µg/m³

Boston

6.6 km PM2.5: 6.7 µg/m³

Boston Roxbury

9.6 km PM2.5: 3.1 µg/m³

Nubian Square - DEP Station

9.6 km PM2.5: 4.9 µg/m³

Milton Blue Hill Observatory

21.1 km PM2.5: 5.8 µg/m³

What cities are near Winthrop?

20 Orient Heights 21 Revere 19 Chelsea 18 East Boston 18 Charlestown 16 Boston 20 Everett 20 South Boston 21 Malden 20 Back Bay

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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 2026-05-29T19:14 UTC.