Today | Weather | Tuesday, July 14, 2026
Active Weather Warnings

Weather in Chicago, Illinois

07:52 PM
Now
Cloudy Weather
88° F
Feels Like 91°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 0
Humidity 59 %
Today
Sunny Weather
Day 91°
Night 79°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Chicago Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 14, 2025)
Cloudy Weather

Day

84°

Night

72°

Wind

6 mph

UV Index

10

Precipitation

1 %

Air Quality in Chicago

NOW
39 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 9.06 µg/m³
PM10 9.42 µg/m³
O3 0.043 ppm
NO2 1.7 ppb
SO2 0.3 ppb
CO 0.10 ppm
NH3 1.2 µg/m³
NO 0.06 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)
PM2.59.06 µg/m³
PM109.42 µg/m³
O383.73 µg/m³
NO23.18 µg/m³
SO20.74 µg/m³
CO113.25 µg/m³
NH31.2 µg/m³
NO0.06 µg/m³

Weather Alerts and Warnings for Chicago

Air Quality Alert

Air Quality Alert issued July 13 at 11:44AM CDT by NWS Chicago IL
Jul 13, 11:44 AM Jul 15, 12:00 AM
The Illinois Environmental Protection Agency has issued an Air
Pollution Action Day for Tuesday July 14th for the greater Chicago
Metropolitan Area and is in effect through Tuesday night.

An Air Pollution Action Day is declared when weather conditions are
such that widespread ozone and or particulate levels are expected to
be at or above the Unhealthy for Sensitive Groups category of the
Air Quality Index for multiple days.

Active children and adults, especially people with pulmonary or
respiratory disease such as asthma, should limit prolonged outdoor
activity.

Area residents are urged to reduce pollution levels. Air quality
forecasts, current air quality, and tips on how you can reduce your
emissions can be found at www.airnow.gov.

Media contact...Illinois EPA.
Updated: Jul 14, 6:37 PM Source: NWS Alert