Today | Weather | Sunday, September 14, 2025

Weather in Joliet, Illinois

10:13 PM

Now

72° F

Feels Like 72°

Precipitation 0 %

Wind 7 mph

Humidity 80 %

Today

Day 88°

Night 61°

Precipitation 1 %

Wind 11

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.

Other:

Warmer with plenty of sun with a twist.

Joliet Weather Forecast Updated

Weather Forecast History

Last Year's Weather on This Day (September 14, 2024)

Day

90°

Night

63°

Wind

7 mph

UV Index

Precipitation

Air quality in Joliet

NOW

66 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 15.84 µg/m³

PM10 16.00 µg/m³

O₃ 41.58 ppb

NO₂ 13.20 ppb

SO₂ 2.38 ppb

CO 280.55 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

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

View Hourly Air Quality Forecast