Hourly Weather | Today › Monday, October 12, 2026
South Portland, Maine
11 PM
Cloudy Weather
57°
Feels Like 50°
17
Humidity: 78%
UV Index: 0
Wind: 14 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 PM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.97 µg/m³
  • PM10: 4.25 µg/m³
  • O3: 0.025 ppm
  • NO2: 5.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.