Air Quality in South Portland, United States

Windy
6.6°C · 47.0% humidity
6.6°
Feels 0.1°
7
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
27 7pm
25
25
9 10pm
9
9
9 1am
21
21
21 4am
21
21
21 7am
21
21
34 10am
34
34
34 1pm
34
34
59 4pm
34
34
Station readings
27
25
25
CAMS model adj -16
37
37
37
25
25
25
25
37
37
37
37
37
37
37
37
50
50
50
50
50
50
75
50
50
AD 728×90

PM2.5 Trend (24h)

23h · 1 station
47.0%
Humidity
65.1 km/h
Wind SSW
1030.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for South Portland?

Temperature & Precipitation

PM2.51.64 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250

What is the 7-day forecast for South Portland?

04-09
10.0° -0.0°
04-10
17.7° 3.9°
04-11
21.2° 7.7°
04-12
13.4° 5.5°
04-13
11.8° 6.8°
6.5 mm
04-14
26.7° 14.9°
04-15
22.2° 18.4°
3.19 mm
Both models agree Avg diff: 4.5°C

What cities are near South Portland?

7 Portland 7 South Portland Gardens 7 Westbrook 6 West Scarborough 6 Saco 6 Biddeford 26 Lewiston Laconia 20 Amesbury 10 Newburyport

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:28 UTC.