❮
Today Tomorrow Hourly 7 days 30 days January
❯
Today | Weather | Monday, January 19, 2026
Active Weather Warnings

Weather in Peoria, Illinois

01:52 AM
Now
Cloudy Weather
9° F
Feels Like -15°
Precipitation 20 %
Wind 17 mph
Humidity 75 %
Today
Cold Day
Day 14°
Night 9°
Precipitation 0 %
Wind 14 mph
UV Index (0 - 11+) 2

Peoria Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 19, 2025)
Cold Day

Day

7°

Night

0°

Wind

14 mph

UV Index

2

Precipitation

0 %

Air Quality in Peoria

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.5 µg/m³
PM10 0.54 µg/m³
O3 0.043 ppm
NO2 0.9 ppb
SO2 0.2 ppb
CO 0.14 ppm
NH3 0.42 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 – 0.5 µg/m³
PM10 – 0.54 µg/m³
O3 – 83.83 µg/m³
NO2 – 1.61 µg/m³
SO2 – 0.65 µg/m³
CO – 157.98 µg/m³
NH3 – 0.42 µg/m³
NO – 0 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Peoria

Moderate Expected Likely

Cold Weather Advisory

Cold Weather Advisory issued January 18 at 1:36PM CST until January 19 at 12:00PM CST by NWS Lincoln IL
Jan 19, 3:00 AM → Jan 19, 12:00 PM
WHAT: Very cold wind chills as low as 10 to 20 below expected
late tonight and Monday morning.

WHERE: Portions of central, east central, and west central
Illinois.

WHEN: From 3 AM to noon CST Monday.

IMPACTS: The dangerously cold wind chills as low as 20 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
+ Read More
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside. If you do not have heat in your home or lack shelter, you can call 211 or visit 211illinois.org for assistance locating appropriate shelter from the cold.
Updated: Jan 19, 12:32 AM Source: NWS Alert