Today | Weather | Sunday, October 26, 2025

Weather in Joliet, Illinois

09:02 AM
Now
Cloudy Weather
50° F
Feels Like 46°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 1
Humidity 68 %
Today
Cloudy Weather
Day 63°
Night 39°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 3

Joliet Weather Forecast Updated

Last updated on

Weather Forecast History

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

Cloudy Night

Day

57°

Night

34°

Wind

4 mph

Precipitation

0

Air Quality in Joliet

NOW
61 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 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
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 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)
PM2.516.98 µg/m³
PM1018.52 µg/m³
O353.03 µg/m³
NO25.95 µg/m³
SO21.77 µg/m³
CO163.57 µg/m³
NH32.2 µg/m³
NO0.39 µg/m³