Today | Weather | Sunday, September 21, 2025

Weather in St. Paul, Minnesota

10:53 PM

Now

64° F

Feels Like 61°

Precipitation 51 %

Wind 6 mph

Humidity 90 %

Today

Day 79°

Night 61°

Precipitation 87 %

Wind 10

St. Paul Weather Forecast Updated

2 minutes ago

Last updated on September 21, 2025 10:51 PM

Last Year's Weather on This Day (September 21, 2024)

81°

54°

12 mph

NOW

51 AQI

Moderate air quality Dominant pollutant: PM2.5

PM2.5 8.64 µg/m³

PM10 11.85 µg/m³

O₃ 30.77 ppb

NO₂ 9.80 ppb

SO₂ 0.72 ppb

CO 204.01 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.