Hourly Weather | Today › Wednesday, October 28, 2026
St. Petersburg, Florida
4 PM
Cloudy Weather
81°
Feels Like 84°
43
Humidity: 71%
UV Index: 3
Wind: 17 mph
5 PM
Cloudy Weather
81°
Feels Like 82°
37
Humidity: 75%
UV Index: 2
Wind: 17 mph
6 PM
Cloudy Weather
79°
Feels Like 81°
40
Humidity: 78%
UV Index: 1
Wind: 17 mph
7 PM
Rainy Night
79°
Feels Like 77°
44
Humidity: 80%
UV Index: 0
Wind: 16 mph
8 PM
Cloudy Weather
79°
Feels Like 79°
1
Humidity: 77%
UV Index: 0
Wind: 17 mph
9 PM
Cloudy Weather
77°
Feels Like 77°
0
Humidity: 80%
UV Index: 0
Wind: 17 mph
10 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 81%
UV Index: 0
Wind: 16 mph
11 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 81%
UV Index: 0
Wind: 16 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 PM
60 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.34 µg/m³
  • PM10: 24.65 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.53 µg/m³
  • PM10: 20.4 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.25 µg/m³
  • PM10: 15.13 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.06 µg/m³
  • PM10: 11.1 µg/m³
  • O3: 0.053 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

8 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.38 µg/m³
  • PM10: 9.22 µg/m³
  • O3: 0.050 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.12 µg/m³
  • PM10: 8.7 µg/m³
  • O3: 0.048 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.36 µg/m³
  • PM10: 9.63 µg/m³
  • O3: 0.046 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.87 µg/m³
  • PM10: 11.2 µg/m³
  • O3: 0.046 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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