Evergreen Park, Illinois, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Evergreen Park, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 57 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Evergreen Park, Illinois, United States
6 AM17th Sep 2025
7 PM
5 AM18th Sep 2025
62AQI
55AQI
58AQI
56AQI
In the last 24 hours,
Evergreen Park's AQI reached its highest point of 62 at 10 AM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Evergreen Park, Illinois, United States
24°C21/27°C
22°C20/27°C
22°C19/27°C
22°C17/27°C
23°C17/32°C
19°C14/25°C
17°C12/22°C
18°C11/23°C
18°C10/24°C
20°C16/28°C
18°C15/22°C
19°C16/25°C
20°C15/25°C
20°C15/25°C
22°C16/28°C
19°C14/25°C
16°C10/22°C
17°C13/22°C
15°C7/22°C
15°C7/22°C
16°C8/24°C
18°C9/25°C
22°C14/30°C
21°C17/29°C
22°C15/31°C
25°C17/34°C
24°C18/31°C
23°C17/30°C
23°C17/30°C
23°C16/31°C
--°C/°C
41AQI
37AQI
40AQI
37AQI
2025 Days Vs Air Quality
Evergreen Park, Illinois, United States
81%
210
19%
50
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2025, 81% of 261 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Evergreen Park, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
22AQI
25AQI
19AQI
21AQI
18AQI
23AQI
26AQI
43AQI
66AQI
42AQI
41AQI
21AQI
28AQI
38AQI
38AQI
29AQI
22AQI
18AQI
19AQI
22AQI
26AQI
31AQI
36AQI
28AQI
23AQI
22AQI
22AQI
23AQI
35AQI
36AQI
19AQI
45AQI
45AQI
20AQI
27AQI
29AQI
23AQI
35AQI
32AQI
29AQI
31AQI
41AQI
32AQI
42AQI
46AQI
29AQI
23AQI
22AQI
22AQI
24AQI
36AQI
33AQI
52AQI
42AQI
39AQI
48AQI
41AQI
24AQI
24AQI
29AQI
34AQI
33AQI
24AQI
16AQI
31AQI
27AQI
21AQI
26AQI
24AQI
24AQI
43AQI
48AQI
74AQI
23AQI
23AQI
23AQI
30AQI
19AQI
25AQI
19AQI
23AQI
19AQI
32AQI
43AQI
44AQI
37AQI
32AQI
28AQI
18AQI
19AQI
33AQI
23AQI
26AQI
21AQI
20AQI
22AQI
17AQI
29AQI
46AQI
40AQI
52AQI
35AQI
29AQI
20AQI
23AQI
30AQI
47AQI
37AQI
38AQI
20AQI
29AQI
28AQI
47AQI
27AQI
18AQI
25AQI
31AQI
30AQI
20AQI
26AQI
26AQI
16AQI
16AQI
21AQI
34AQI
38AQI
18AQI
22AQI
30AQI
22AQI
35AQI
30AQI
32AQI
43AQI
33AQI
22AQI
22AQI
18AQI
21AQI
18AQI
15AQI
21AQI
17AQI
14AQI
20AQI
24AQI
31AQI
38AQI
45AQI
37AQI
36AQI
37AQI
54AQI
53AQI
100AQI
84AQI
76AQI
71AQI
66AQI
59AQI
68AQI
74AQI
74AQI
63AQI
48AQI
53AQI
44AQI
31AQI
27AQI
39AQI
35AQI
39AQI
54AQI
45AQI
30AQI
38AQI
33AQI
21AQI
30AQI
28AQI
31AQI
51AQI
51AQI
54AQI
67AQI
51AQI
50AQI
65AQI
47AQI
40AQI
38AQI
28AQI
56AQI
73AQI
74AQI
42AQI
30AQI
30AQI
32AQI
26AQI
69AQI
80AQI
61AQI
53AQI
31AQI
30AQI
29AQI
35AQI
38AQI
39AQI
82AQI
79AQI
61AQI
67AQI
82AQI
83AQI
90AQI
69AQI
44AQI
38AQI
31AQI
32AQI
30AQI
40AQI
66AQI
72AQI
58AQI
37AQI
37AQI
29AQI
20AQI
20AQI
37AQI
35AQI
23AQI
19AQI
31AQI
36AQI
35AQI
19AQI
25AQI
42AQI
41AQI
47AQI
50AQI
46AQI
43AQI
21AQI
30AQI
30AQI
35AQI
51AQI
52AQI
52AQI
58AQI
61AQI
56AQI
56AQI
57AQI
29AQI
33AQI
30AQI
29AQI
26AQI
50AQI
48AQI
45AQI
46AQI
No. of days
202537AQI
Highest AQI recorded in
June50AQI
Lowest AQI recorded in
May26AQI
202435AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
September29AQI
202340AQI
Highest AQI recorded in
June66AQI
Lowest AQI recorded in
February29AQI
202236AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
November30AQI
202140AQI
Highest AQI recorded in
July53AQI
Lowest AQI recorded in
November32AQI
202038AQI
Highest AQI recorded in
May51AQI
Lowest AQI recorded in
November25AQI
Most & Least Polluted Years Over the Last 6 Years
Evergreen Park's annual 2025 AQI (37) shows an average percentage change of -2.4% (improved AQI) compared to previous years: 2020 (38), 2021 (40), 2022 (36), 2023 (40), 2024 (35).