Today | Weather | Wednesday, September 3, 2025

Weather in St. Petersburg, Florida

01:55 AM
Now
Cloudy NightCloudy night, overcast skies at night with no rain.
81° F
Feels Like 88°
Precipitation 25 %
Wind 8 mph
Humidity 82 %
Today
Sunny with a Chance of ThunderstormsSunny weather with a possibility of isolated thunderstorms developing later in the day.
Day 88°
Night 79°
Precipitation 88 %
Wind 7 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

St. Petersburg Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 3, 2024)

Stormy WeatherStormy weather, thunderstorms.

Day

91°

Night

79°

Wind

12 mph

Precipitation

90

Air quality in St. Petersburg

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.61 µg/m³
PM10 7.92 µg/m³
O₃ 31.65 ppb
NO₂ 5.12 ppb
SO₂ 0.78 ppb
CO 144.80 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors