Air Quality in South Portland, United States

Windy
10.0°C · 37.6% humidity
10.0°
Feels 3.9°
8
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
28 5pm
28
27
9 8pm
9
0
0 11pm
0
0
9 2am
9
9
9 5am
9
9
9 8am
9
22
22 11am
22
22
22 2pm
22
47
Station readings
28
28
27
CAMS model adj -28
50
50
37
37
37
25
25
25
25
37
37
37
37
37
37
37
37
50
50
50
50
50
50
75
AD 728×90

PM2.5 Trend (24h)

23h · 1 station
37.6%
Humidity
96.5 km/h
Wind S
1032.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for South Portland?

Temperature & Precipitation

PM2.51.9 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?

8 Portland 8 South Portland Gardens 8 Westbrook 6 West Scarborough 5 Saco 5 Biddeford 27 Lewiston Laconia 21 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 2026-04-09T20:32 UTC.