Hourly Weather | Today Wednesday, March 18, 2026
Portsmouth, Virginia
11 PM
Cloudy Night
36°
Feels Like 34°
0
Humidity: 70%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.78 µg/m³
  • PM10: 5.57 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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