Air Quality in Cook, Illinois

Q: What is the air quality in Cook, Illinois?

Based on EPA data, Cook has a median AQI of 54 (Moderate). The primary pollutant is PM2.5.

Q: Is Cook a good place to live for air quality?

Cook has a 10-year average median AQI of 56 with 131 good air quality days in 2024.

Median AQI (2024)

166

Max AQI (2024)

→ stable

10-Year Trend

PM2.5

Primary Pollutant

131

Good Days (2024)

Monitoring Stations

AQI Trend (Median)

Air Quality Days by Category

Annual Summary

Year	Median AQI	Max AQI	Good Days	Moderate Days	Unhealthy Days	Ozone Days	PM2.5 Days
2024	54	166	131	224	11	123	208
2023	57	223	104	227	34	97	252
2022	54	151	117	240	8	68	270
2021	59	156	87	257	21	78	255
2020	58	164	86	260	20	73	263
2019	58	133	80	276	9	58	295
2018	59	177	86	260	19	91	244
2017	55	177	114	232	19	100	249
2016	56	169	115	233	18	83	245
2015	57	195	73	285	7	46	274

Recent Daily AQI

Date	AQI	Category	Primary Pollutant
Dec 31, 2024	53	Moderate	PM2.5
Dec 30, 2024	59	Moderate	PM2.5
Dec 29, 2024	56	Moderate	PM2.5
Dec 28, 2024	52	Moderate	PM2.5
Dec 27, 2024	60	Moderate	PM2.5
Dec 26, 2024	71	Moderate	PM2.5
Dec 25, 2024	69	Moderate	PM2.5
Dec 24, 2024	59	Moderate	PM2.5
Dec 23, 2024	54	Moderate	PM2.5
Dec 22, 2024	62	Moderate	PM2.5
Dec 21, 2024	48	Good	PM2.5
Dec 20, 2024	56	Moderate	PM2.5
Dec 19, 2024	62	Moderate	PM2.5
Dec 18, 2024	56	Moderate	PM2.5
Dec 17, 2024	56	Moderate	PM2.5
Dec 16, 2024	52	Moderate	PM2.5
Dec 15, 2024	55	Moderate	PM2.5
Dec 14, 2024	65	Moderate	PM2.5
Dec 13, 2024	53	Moderate	PM2.5
Dec 12, 2024	33	Good	PM2.5
Dec 11, 2024	39	Good	PM2.5
Dec 10, 2024	51	Moderate	PM2.5
Dec 9, 2024	49	Good	PM2.5
Dec 8, 2024	45	Good	PM2.5
Dec 7, 2024	51	Moderate	PM2.5
Dec 6, 2024	37	Good	PM10
Dec 5, 2024	34	Good	NO2
Dec 4, 2024	56	Moderate	PM2.5
Dec 3, 2024	55	Moderate	PM2.5
Dec 2, 2024	52	Moderate	PM2.5
Dec 1, 2024	40	Good	PM2.5
Nov 30, 2024	39	Good	PM2.5
Nov 29, 2024	42	Good	PM2.5
Nov 28, 2024	44	Good	PM2.5
Nov 27, 2024	61	Moderate	PM2.5
Nov 26, 2024	51	Moderate	PM2.5
Nov 25, 2024	54	Moderate	PM2.5
Nov 24, 2024	64	Moderate	PM2.5
Nov 23, 2024	55	Moderate	PM2.5
Nov 22, 2024	39	Good	PM2.5
Nov 21, 2024	45	Good	PM2.5
Nov 20, 2024	34	Good	PM2.5
Nov 19, 2024	33	Good	PM2.5
Nov 18, 2024	68	Moderate	PM2.5
Nov 17, 2024	59	Moderate	PM2.5
Nov 16, 2024	62	Moderate	PM2.5
Nov 15, 2024	60	Moderate	PM2.5
Nov 14, 2024	40	Good	PM2.5
Nov 13, 2024	53	Moderate	PM2.5
Nov 12, 2024	41	Good	PM2.5
Nov 11, 2024	29	Good	PM2.5
Nov 10, 2024	34	Good	PM2.5
Nov 9, 2024	59	Moderate	PM2.5
Nov 8, 2024	52	Moderate	PM2.5
Nov 7, 2024	47	Good	PM2.5
Nov 6, 2024	29	Good	PM2.5
Nov 5, 2024	28	Good	PM2.5
Nov 4, 2024	36	Good	PM2.5
Nov 3, 2024	52	Moderate	PM2.5
Nov 2, 2024	59	Moderate	PM2.5
Nov 1, 2024	52	Moderate	PM2.5
Oct 31, 2024	31	Good	Ozone
Oct 30, 2024	73	Moderate	PM2.5
Oct 29, 2024	72	Moderate	PM10
Oct 28, 2024	54	Moderate	PM2.5
Oct 27, 2024	61	Moderate	PM2.5
Oct 26, 2024	55	Moderate	PM2.5
Oct 25, 2024	54	Moderate	PM2.5
Oct 24, 2024	59	Moderate	PM10
Oct 23, 2024	55	Moderate	PM2.5
Oct 22, 2024	64	Moderate	PM10
Oct 21, 2024	92	Moderate	PM10
Oct 20, 2024	63	Moderate	PM2.5
Oct 19, 2024	59	Moderate	PM2.5
Oct 18, 2024	53	Moderate	PM2.5
Oct 17, 2024	61	Moderate	PM10
Oct 16, 2024	39	Good	NO2
Oct 15, 2024	29	Good	Ozone
Oct 14, 2024	29	Good	Ozone
Oct 13, 2024	34	Good	PM2.5
Oct 12, 2024	48	Good	PM2.5
Oct 11, 2024	67	Moderate	PM10
Oct 10, 2024	51	Moderate	PM2.5
Oct 9, 2024	45	Good	PM2.5
Oct 8, 2024	52	Moderate	PM2.5
Oct 7, 2024	51	Moderate	NO2
Oct 6, 2024	56	Moderate	PM2.5
Oct 5, 2024	71	Moderate	Ozone
Oct 4, 2024	42	Good	NO2
Oct 3, 2024	71	Moderate	PM10

Monitoring Stations

4TH DISTRICT COURT

Maywood

Est. 2003-01-01

41.8729, -87.8259

CARVER HS

Chicago

Est. 1987-10-24

41.6565, -87.5896

COM ED MAINTENANCE AREA

Maywood

Est. 1987-09-01

41.8721, -87.8291

COM ED MAINTENANCE BLDG

Chicago

Est. 2000-01-01

41.7514, -87.7135

COOK COUNTY COURT COMPLEX

Maywood

Est. 1984-12-01

41.8722, -87.8262

COOK COUNTY TRAILER

Lemont

Est. 1982-01-01

41.6681, -87.9906

COOK COUNTY TRAILER

Cicero

Est. 1983-01-01

41.8552, -87.7525

EISENHOWER HS

Blue Island

Est. 1966-01-01

41.6621, -87.6965

GRAVES ES

Summit

Est. 1974-01-01

41.7828, -87.8054

IEPA TRAILER

Schiller Park

Est. 1998-01-01

41.9652, -87.8763

JARDINE WATER PLANT

Chicago

Est. 1995-04-14

41.8958, -87.6077

Kennedy Near Road 2

Chicago

Est. 2019-07-26

41.9200, -87.6730

Kingery Near Road #1

Lansing

Est. 2019-03-01

41.5786, -87.5574

LIBERTY SCHOOL

Cicero

Est. 2000-01-01

41.8644, -87.7489

MAYFAIR PUMP STATION

Chicago

Est. 1982-01-01

41.9655, -87.7499

NORTHBROOK WATER PLANT

Northbrook

Est. 1997-03-20

42.1400, -87.7992

PEREZ ELEMENTRY SCHOOL

Chicago

Est. 2010-01-01

41.8558, -87.6579

REGIONAL OFFICE BUILDING

Des Plaines

Est. 2001-01-01

42.0603, -87.8632

SEARS TOWER

Chicago

Est. 1978-01-01

41.8790, -87.6356

SOUTH WATER FILTRATION PLANT

Chicago

Est. 1971-01-01

41.7558, -87.5453

Frequently Asked Questions

What is the air quality in Cook, Illinois?

Based on EPA data from 2024, Cook has a median Air Quality Index (AQI) of 54, which is classified as "Moderate." The primary pollutant is PM2.5. Over the past 10 years, air quality has been stable.

Is Cook a good place to live for air quality?

Cook has a 10-year average median AQI of 56. In 2024, there were 131 days with "Good" air quality and 11 days with unhealthy conditions. Unusually sensitive individuals should consider reducing prolonged outdoor exertion.

What pollutants affect Cook the most?

The primary pollutant driving the AQI in Cook is PM2.5. This is monitored by 27 active EPA stations in the county. Other pollutants tracked include ozone, PM10, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

How many air quality monitoring stations are in Cook?

There are 27 active EPA monitoring stations in Cook, Illinois. These stations continuously measure pollutant levels and contribute to the daily AQI calculations.