What is the air quality in Winthrop today?

The current Air Quality Index (AQI) in Winthrop is 17 (Good). PM2.5 concentration is 4.06 µg/m³.

What is the temperature in Winthrop right now?

The current temperature in Winthrop is 33.9°C (feels like 37.5°C). Humidity is 43.5% and wind speed is 53.2 km/h.

Is it safe to go outside in Winthrop?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 14.9 (Extreme).

Air Quality in Winthrop, United States

Windy

33.9°C · 43.5% humidity

33.9°

Feels 37.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

5 10am

17 1pm

9 4pm

7 7pm

6 10pm

5 1am

5 4am

5 7am

Station readings

CAMS model adj -20

Air Quality Index Trend

46h · 1 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.

43.5%

Humidity

53.2 km/h

Wind WSW

1012.9 hPa

Pressure

14.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.06 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Winthrop?

Temperature & Precipitation

PM2.5 Trend

46h · 1 station

PM2.54.06 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX14.9

Extreme

Station readings (2 stations within 25 km)

4.06

Median

2.82

Average

0.85

Low

4.8

High

PM2.5 µg/m³ · Model: 5.9 · Bias: +1.8

What is the 7-day forecast for Winthrop?

09-05

33.9° 13.2°

12.25 mm

09-06

21.7° 18.4°

0.56 mm

09-07

20.4° 14.5°

09-08

20.4° 17.4°

6.94 mm

09-09

25.5° 13.3°

1.06 mm

09-10

24.1° 15.4°

1.31 mm

09-11

30.2° 13.5°

0.06 mm

Both models agree Avg diff: 4.2°C

Where are air quality stations near Winthrop?

Boston

6.6 km PM2.5: 5.0 µg/m³

Boston Roxbury

9.6 km PM2.5: 4.8 µg/m³

Boston Roxbury

9.6 km PM2.5: 5.0 µg/m³

Lynn Water Treatment Plant

11.1 km PM2.5: 4.8 µg/m³

Lynn Water Treatment Plant

11.1 km PM2.5: 5.0 µg/m³

East Dedham

20.0 km 69.8°C 71.0% RH PM2.5: 0.7 µg/m³ PM10: 1.2 µg/m³

What cities are near Winthrop?

17 Orient Heights 17 Revere 18 Chelsea 18 East Boston 18 Charlestown 19 Boston 17 Everett 19 South Boston 17 Malden 20 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 2026-09-05T17:02 UTC.