Air Pollution in Illinois: Real-time Air Quality Index and smog alert.

The latest data Last 7 days Illinois pollution March 2016 - May 2020
Current data from stations: BRAIDWD Alhambra Bondville ROCK_IS KNIGHT_P Stockton
Locations: Adams County » Bond County » Hamilton County » Champaign County » Jo Daviess County » Rock Island County » Will County »
Pollution and air quality forecast for Illinois. Today is Thursday, May 1, 2025. The following air pollution values have been recorded for Illinois:
  1. particulate matter (PM2.5) dust - 6 (Good)
  2. ozone (O3) - 0 (Good)
  3. carbon monoxide (CO) - 0 (Good)
  4. sulfur dioxide (SO2) - 0 (Good)
Real-time Air Quality Index (AQI) for Illinois, Tuesday, April 16, 2024: 1.

air quality index: 0
AQI 1 Good

What is the air quality in Illinois today? Is the air polluted in Illinois?. Is there smog?

Today (Tuesday, April 16, 2024) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Illinois.


What is the current level of PM2.5 in Illinois? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 6 (Good) For comparison, the highest level of PM2.5 in Illinois in the last 7 days was: 9 (Monday, April 15, 2024) and the lowest: 3 (Friday, April 12, 2024). The highest PM2.5 values were recorded: 12 (August 2018). The lowest level of particulate matter PM2.5 pollution occurs in month: May (5.7).

How is the O3 level today in Illinois? (ozone (O3))
0 (Good)

How high is the CO level? (carbon monoxide (CO))
0 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
0 (Good)



Current data Tuesday, April 16, 2024, 9:00 AM

PM2,5 6 (Good)

O3 0 (Good)

CO 0 (Good)

SO2 0 (Good)

0 (Good)

Data on air pollution from recent days in Illinois

index 2024-04-09 2024-04-10 2024-04-11 2024-04-12 2024-04-13 2024-04-14 2024-04-15 2024-04-16 2022-12-02 2022-12-03 2022-12-04 2022-12-05 2022-12-06
o3 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good
pm25 5
Good		 5
Good		 5
Good		 3
Good		 4
Good		 7
Good		 9
Good		 7
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
co 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
so2 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
no 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
data source »
Air pollution in Illinois from March 2016 to May 2020
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good)
pm25 5.7 (Good) 8.2 (Good) 7.9 (Good) 8.3 (Good) 8.7 (Good) 11 (Good) 9 (Good) 6.3 (Good) 7.9 (Good) 7.5 (Good) 9.6 (Good) 7.6 (Good) 6.4 (Good) 7.2 (Good) 9.6 (Good) 9.8 (Good) 9.7 (Good) 8 (Good) 10 (Good) 6.3 (Good) 6.8 (Good) 12 (Good) 8.8 (Good) 8.1 (Good) 9.1 (Good) 7.7 (Good) 8.1 (Good) 9.3 (Good) 9.2 (Good) 10 (Good) 9.5 (Good) 7.2 (Good) 8.7 (Good) 8 (Good) 8.2 (Good) 6.4 (Good) 7.1 (Good) 7.1 (Good) 7.5 (Good) 9.9 (Good) 10 (Good) 8 (Good) 8.1 (Good) 7 (Good) 7.4 (Good) 8.5 (Good) 7.3 (Good) 7.5 (Good) 7.4 (Good) 9.9 (Good) 8.3 (Good)
co:ppm - (Good) - (Good) - (Good) 0.1 (Good) 0.06 (Good) 0.09 (Good) 0.05 (Good) 0.05 (Good) 0.09 (Good) 0.04 (Good) 0.09 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0.15 (Good) 0.15 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0.14 (Good) - (Good) - (Good) 0.16 (Good) 0.15 (Good) 0.15 (Good) - (Good) - (Good) - (Good) 0.14 (Good) 0.1 (Good) 0.12 (Good) 0.13 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
so2:ppm - (Good) - (Good) - (Good) - (Good) 0 (Good) 0 (Good) - (Good) - (Good) 0 (Good) 0 (Good) 0 (Good) - (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0 (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
data source »

BRAIDWD

Tuesday, April 16, 2024, 10:00 AM

PM2,5 4.5 (Good)

particulate matter (PM2.5) dust

O3 0.04 (Good)

ozone (O3)

Alhambra

Tuesday, December 6, 2022, 1:00 PM

O3 0.01 (Good)

ozone (O3)

Bondville

Tuesday, April 16, 2024, 9:00 AM

CO 0.1 (Good)

carbon monoxide (CO)

O3 0.04 (Good)

ozone (O3)

SO2 0 (Good)

sulfur dioxide (SO2)

0 (Good)

index_name_no

ROCK_IS

Tuesday, April 16, 2024, 10:00 AM

O3 0.04 (Good)

ozone (O3)

PM2,5 3.8 (Good)

particulate matter (PM2.5) dust

KNIGHT_P

Tuesday, April 16, 2024, 10:00 AM

O3 0.03 (Good)

ozone (O3)

PM2,5 9.5 (Good)

particulate matter (PM2.5) dust

Stockton

Tuesday, April 16, 2024, 9:00 AM

O3 0.04 (Good)

ozone (O3)

BRAIDWD

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
o3 0.04 0.04 0.04 0.04 0.04 0.04 0.03 0.04
pm25 4.8 13 6.7 3.5 3.4 5.4 3.9 3

Alhambra

index 2022-12-06 2022-12-05 2022-12-04 2022-12-03 2022-12-02
o3 0.01 0.01 0.02 0.02 0.02

Bondville

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
co 0.1 0.12 0.1 0.1 0.1 0.1 0.1 0.1
o3 0.04 0.04 0.05 0.04 0.04 0.04 0.04 0.04
so2 0 0 0 0 0 0 0 0
no 0 0 0 0 0 0 0 0

ROCK_IS

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
o3 0.05 0.04 0.05 0.04 0.04 0.03 0.03 0.03
pm25 4.4 5.2 6.5 5.6 3 7.1 6.1 4.1

KNIGHT_P

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
pm25 12 10 6.7 4.1 3.2 3 4.8 7.6
o3 0.04 0.04 0.05 0.04 0.04 0.04 0.03 0.04

Stockton

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
o3 0.05 0.05 0.05 0.05 0.04 0.04 0.04 0.04

BRAIDWD

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.03 0.03 0.03 0.02 - - 0.02 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.03 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.03 0.03 0.02 0.02 0.03 0.03 0.03 0.03 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.02 0.03 0.03 0.03 0.04 0.04 0.03 0.03
pm25 5 8.5 7.8 9.5 9.5 12 12 7.2 7.9 7.3 9.8 8.1 5.6 7 10 11 10 8.1 - 5.2 - 12 7.3 6.7 8.1 7.1 7.5 10 11 9.2 9.9 6.3 8.5 7.8 7.3 5.9 7 6.4 7.4 9.8 11 8.4 8.2 7.7 9.7 9.2 7.8 7.4 7.9 12 12

Alhambra

index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2016-09 2016-08
o3:ppm 0.04 0.03 0.03 0.03 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.03 0.03 0.02 0.02 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.03 0.03 0.03 0.02 0.02 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.02 0.04

Bondville

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
pm25 5.5 7.6 7.2 7.1 - - 6.7 5.6 6.9 - - 7.1 6.9 7.9 9.3 10 9.9 8.4 11 6.3 6.2 12 8.2 6.6 8.7 7.5 7.4 8 7.2 - 8.1 7.2 8.9 8.2 9 7 7.2 7.9 7.5 10 9.7 7.5 8 6.3 5.2 7.7 6.9 7.5 7 8 5.2
o3:ppm - - - 0.03 0.02 0.02 0.02 0.02 0.02 0.03 0.03 - 0.03 0.03 - 0.02 0.03 0.02 - - - - - - - 0.04 - - 0.03 0.02 0.02 - - - 0.04 0.04 0.04 0.04 - - - - - - - - - - - - -
co:ppm - - - 0.1 0.06 0.09 0.05 0.05 0.09 0.04 0.09 - - - - - - - 0.15 0.15 - - - - - 0.14 - - 0.16 0.15 0.15 - - - 0.14 0.1 0.12 0.13 - - - - - - - - - - - - -
so2:ppm - - - - 0 0 - - 0 0 0 - 0 - - - - 0 - - - - - - - - - - - 0 0 - - - - - - - - - - - - - - - - - - - -

ROCK_IS

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.04 0.03 0.03 0.04 - - 0.02 0.02 0.03 0.03 0.04 0.04 0.03 0.04 0.04 0.03 0.03 0.02 0.02 0.02 0.03 0.03 0.04 0.04 0.04 0.03 0.03 0.03 0.02 0.02 0.02 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.03 0.03 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.04 0.04 0.03 0.03
pm25 6 8.4 8.2 8.5 6.9 10 9.3 6.1 7.5 7.4 10 8.3 6.1 6.9 9.3 11 9.6 6.9 - 6.9 8 12 9.3 8.9 9.7 8.4 8.9 11 11 11 11 8.1 - - - - - - - - - - - - - - - - - - -

KNIGHT_P

2016-04   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04
o3:ppm 0.04 0.03 0.03 0.04 - - 0.03 0.03 0.03 0.03 0.03 0.04 0.03 0.04 0.04 0.03 - - - 0.02 0.02 0.03 0.03 0.03 0.04 0.04 0.03 0.02 - - 0.02 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.02 0.03 0.04 0.04 0.04
pm25 6.5 8.5 8.4 8 9.6 10 8.6 6.5 9.4 7.7 8.7 7 7 7.1 9.6 7.3 9.2 8.5 9.5 7 6.2 12 10 10 9.7 7.8 8.8 8.5 7.9 10 9.4 7 - - - - - - - - - - - - - - - -

QUINCY

index 2020-05 2020-04 2020-03 2020-02 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.02 0.03 0.03 0.03 0.03 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.04 0.03 0.03

Stockton

index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2016-09 2016-08
o3:ppm 0.04 0.03 0.03 0.03 0.03 0.02 0.02 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.02 0.02 0.02 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.02 0.03 0.04 0.03 0.03 0.04 0.04 0.04 0.03 0.03

* Pollution data source: https://openaq.org (AirNow) The data is licensed under CC-By 4.0