Air Quality in Winthrop, United States
Drizzle
20.7°C · 43.0% humidity
20.7°
Feels 20.7°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
AQI Forecast
25
5pm
25
25
—
8pm
—
—
—
11pm
—
—
—
2am
—
—
—
5am
—
—
—
8am
—
—
—
11am
—
—
25
2pm
25
25
Air Quality Index Trend
45h · 2 stnWinthrop'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 stationsPM2.57.04 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?
19
Boston
40
Boston
34
Boston Roxbury
22
Nubian Square - DEP Station
14
Milton Blue Hill Observatory
What cities are near Winthrop?
Get AQI alerts for Winthrop
Notify me when air quality reaches:
Free · No account · Unsubscribe any time
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.