Today | Weather | Tuesday, May 19, 2026

Weather in St. Petersburg, Florida

11:58 PM
Today
Rainy Night
Day 97°
Night 77°
Precipitation 55 %
Wind 9 mph

St. Petersburg Weather Forecast Updated

18 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 19, 2025)
Cloudy Weather

Day

88°

Night

79°

Wind

7 mph

UV Index

12

Precipitation

2 %

Air Quality in St. Petersburg

NOW
33 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.89 µg/m³
PM10 3.76 µg/m³
O3 0.036 ppm
NO2 0.6 ppb
SO2 0.1 ppb
CO 0.09 ppm
NH3 0.12 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.51.89 µg/m³
PM103.76 µg/m³
O370.13 µg/m³
NO21.05 µg/m³
SO20.29 µg/m³
CO102.62 µg/m³
NH30.12 µg/m³
NO0 µg/m³