What is the air quality in Winthrop today?

The current Air Quality Index (AQI) in Winthrop is 29 (Good). PM2.5 concentration is 7.04 µg/m³.

What is the temperature in Winthrop right now?

The current temperature in Winthrop is 20.7°C (feels like 20.7°C). Humidity is 43.0% and wind speed is 15.5 km/h.

Is it safe to go outside in Winthrop?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Winthrop, United States

Drizzle

20.7°C · 43.0% humidity

20.7°

Feels 20.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

25 5pm

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25 2pm

Air Quality Index Trend

45h · 2 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. Current PM2.5 concentration in Winthrop is 1.4× the WHO annual guideline of 5 µg/m³.

43.0%

Humidity

15.5 km/h

Wind NW

1019.6 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.04 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Winthrop?

Temperature & Precipitation

PM2.5 Trend

45h · 2 stations

PM2.57.04 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (2 stations within 25 km)

7.04

Median

7.2

Average

6.2

Low

8.2

High

PM2.5 µg/m³ · Model: 5.9 · 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: 4.3°C

Where are air quality stations near Winthrop?

Boston

6.6 km PM2.5: 4.6 µg/m³

Boston

6.6 km PM2.5: 9.6 µg/m³

Boston Roxbury

9.6 km PM2.5: 8.2 µg/m³

Nubian Square - DEP Station

9.6 km PM2.5: 5.3 µg/m³

Milton Blue Hill Observatory

21.1 km PM2.5: 3.4 µg/m³

What cities are near Winthrop?

30 Orient Heights 30 Revere 30 Chelsea 30 East Boston 30 Charlestown 30 Boston 30 Everett 27 South Boston 30 Malden 32 Back Bay

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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 2026-05-29T00:10 UTC.