Today | Weather | Sunday, August 30, 2026

Weather in Joliet, Illinois

12:10 AM
Now
Cloudy Night
73° F
Feels Like 75°
Precipitation 34 %
Wind 6 mph
Humidity 82 %
Today
Partly Sunny with Showers
Day 88°
Night 68°
Precipitation 55 %
Wind 9 mph
UV Index (0 - 11+) 5

Joliet Weather Forecast Updated

46 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 30, 2025)
Cloudy Night

Day

75°

Night

54°

Wind

6 mph

Precipitation

2 %

Air Quality in Joliet

NOW
43 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 10.25 µg/m³
PM10 10.63 µg/m³
O3 0.033 ppm
NO2 1.9 ppb
SO2 0.4 ppb
CO 0.11 ppm
NH3 0.51 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)
PM2.510.25 µg/m³
PM1010.63 µg/m³
O363.9 µg/m³
NO23.5 µg/m³
SO20.95 µg/m³
CO130.23 µg/m³
NH30.51 µg/m³
NO0 µg/m³