Today | Weather | Monday, April 27, 2026

Weather in Joliet, Illinois

07:53 PM
Now
Stormy Weather
64° F
Feels Like 57°
Precipitation 65 %
Wind 16 mph
Humidity 93 %
Today
Stormy Weather
Day 70°
Night 50°
Precipitation 75 %
Wind 12 mph

Joliet Weather Forecast Updated

15 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Sunny Weather

Day

70°

Night

50°

Wind

9 mph

UV Index

8

Precipitation

1 %

Air Quality in Joliet

NOW
30 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.9 µg/m³
PM10 1.95 µg/m³
O3 0.032 ppm
NO2 1.4 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0.82 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)
PM2.51.9 µg/m³
PM101.95 µg/m³
O363.56 µg/m³
NO22.57 µg/m³
SO20.35 µg/m³
CO139.03 µg/m³
NH30.82 µg/m³
NO0 µg/m³