Today | Weather | Sunday, November 1, 2026

Weather in Chicago, Illinois

11:08 PM
Now
Cloudy Night
61° F
Feels Like 57°
Precipitation 47 %
Wind 8 mph
Humidity 83 %
Today
Rainy Weather
Day 63°
Night 55°
Precipitation 55 %
Wind 8 mph

Chicago Weather Forecast Updated

12 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 1, 2025)
Rainy Night

Day

52°

Night

43°

Wind

6 mph

Precipitation

61 %

Air Quality in Chicago

NOW
42 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.42 µg/m³
PM10 3.73 µg/m³
O3 0.046 ppm
NO2 1.5 ppb
SO2 0.6 ppb
CO 0.12 ppm
NH3 0.34 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)
PM2.5 – 3.42 µg/m³
PM10 – 3.73 µg/m³
O3 – 89.65 µg/m³
NO2 – 2.81 µg/m³
SO2 – 1.51 µg/m³
CO – 132.21 µg/m³
NH3 – 0.34 µg/m³
NO – 0 µg/m³