Hourly Weather | Today Friday, September 18, 2026
Port St. Lucie, Florida
9 PM
Stormy Weather
77°
Feels Like 81°
51
Humidity: 87%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
75°
Feels Like 84°
47
Humidity: 92%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
75°
Feels Like 82°
34
Humidity: 94%
UV Index: 0
Wind: 2 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.47 µg/m³
  • PM10: 3.84 µg/m³
  • O3: 0.025 ppm
  • NO2: 3.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.56 µg/m³
  • PM10: 3.96 µg/m³
  • O3: 0.021 ppm
  • NO2: 4.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.65 µg/m³
  • PM10: 4.05 µg/m³
  • O3: 0.018 ppm
  • NO2: 4 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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