Today | Weather | Tuesday, July 21, 2026
Active Weather Warnings

Weather in Bloomington, Illinois

02:08 AM
Now
Cloudy Night
73° F
Feels Like 79°
Precipitation 46 %
Wind 10 mph
Humidity 97 %
Today
Cloudy Weather
Day 86°
Night 63°
Precipitation 25 %
Wind 12 mph
UV Index (0 - 11+) 6

Bloomington Weather Forecast Updated

49 minutes ago
Last updated on

Air Quality in Bloomington

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

Pollutant Concentrations:

PM2.5 11.39 µg/m³
PM10 12.05 µg/m³
O3 0.028 ppm
NO2 3.1 ppb
SO2 1.5 ppb
CO 0.13 ppm
NH3 0.44 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)
PM2.511.39 µg/m³
PM1012.05 µg/m³
O354.54 µg/m³
NO25.79 µg/m³
SO23.87 µg/m³
CO150.71 µg/m³
NH30.44 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Bloomington

Air Quality Alert

Air Quality Alert issued July 20 at 3:10AM CDT by NWS Lincoln IL
Jul 20, 3:10 AM Jul 21, 3:15 AM
The Illinois Environmental Protection Agency has issued an Areawide
Air Pollution Action Day for Monday July 20th for portions of
Illinois.

An Areawide Air Pollution Action Day is declared when weather
conditions are such that widespread ozone and or particulate levels
are forecast to be at OR ABOVE the Unhealthy for Sensitive Groups
(USG) category in all or nearly all Illinois AQI forecast sectors.

Areas both inside and outside of the Action Day coverage area are
likely to see smoke/particulates to a varying degree and duration
today with smoke likely decreasing from southwest to northeast
this afternoon. Those with air quality concerns or anyone in
Illinois with outdoor plans are encouraged to check current NowCast
readings or sign up for EnviroFlash alerts on AirNow. gov. Before
going outside, checking the NowCast AQI will help identify periods of
both poor and cleaner air quality regardless of the level of the
daily 24-hour AQI forecast.

AQI Category Guidance
Unhealthy for Sensitive Groups (USG) - Members of sensitive groups
may experience health effects. The general public is less likely to
be affected. Sensitive groups: Make outdoor activities shorter and
less intense. Its OK to be active outdoors, but take more breaks.
Watch for symptoms such as coughing or shortness of breath. People
with asthma: Follow your asthma action plan and keep quick relief
medicine handy. People with heart disease: Symptoms such as
palpitations, shortness of breath, or unusual fatigue may indicate a
serious problem. If you have any of these, contact your health care
provider. Unhealthy - Sensitive groups: Avoid long or intense outdoor
activities. Consider rescheduling or moving activities indoors.
Everyone else: Reduce long or intense activities. Take more breaks
during outdoor activities.

Media Contact... Illinois EPA
Updated: Jul 21, 1:18 AM Source: NWS Alert