Today | Weather | Sunday, October 26, 2025

Weather in Joliet, Illinois

09:02 AM

Now

50° F

Feels Like 46°

Precipitation 0 %

Wind 8 mph

UV Index (0 - 11+) 1

Humidity 68 %

Today

Day 63°

Night 39°

Precipitation 0 %

Wind 9 mph

UV Index (0 - 11+) 3

Joliet Weather Forecast Updated

Last updated on October 26, 2025 7:49 AM

Weather Forecast History

Last Year's Weather on This Day (October 26, 2024)

Day

57°

Night

34°

Wind

4 mph

Precipitation

Air Quality in Joliet

NOW

61 AQI

Moderate air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 16.98 µg/m³

PM₁₀ 18.52 µg/m³

O₃ 0.027 ppm

NO₂ 3.2 ppb

SO₂ 0.7 ppb

CO 0.14 ppm

NH₃ 2.2 µg/m³

NO 0.39 µg/m³

PM_2.5 – 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 16.98 µg/m³

PM₁₀ – 18.52 µg/m³

O₃ – 53.03 µg/m³

NO₂ – 5.95 µg/m³

SO₂ – 1.77 µg/m³

CO – 163.57 µg/m³

NH₃ – 2.2 µg/m³

NO – 0.39 µg/m³

View Hourly Air Quality Forecast