Oak 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!
July Air Quality Analysis
Oak Park, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (31st July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 95 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Oak Park, Illinois, United States
81%
171
19%
41
Total number of days with different AQI categories in last 213 days in 2025 (152 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2025, 81% of 213 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
Oak Park, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
22AQI
25AQI
19AQI
20AQI
18AQI
21AQI
24AQI
45AQI
66AQI
44AQI
42AQI
22AQI
27AQI
35AQI
39AQI
31AQI
23AQI
18AQI
19AQI
21AQI
25AQI
30AQI
34AQI
29AQI
21AQI
21AQI
22AQI
22AQI
38AQI
36AQI
19AQI
46AQI
47AQI
20AQI
25AQI
30AQI
22AQI
33AQI
31AQI
27AQI
30AQI
40AQI
30AQI
45AQI
52AQI
28AQI
22AQI
21AQI
22AQI
23AQI
32AQI
34AQI
56AQI
43AQI
39AQI
48AQI
40AQI
24AQI
21AQI
26AQI
37AQI
33AQI
26AQI
20AQI
32AQI
26AQI
22AQI
26AQI
25AQI
22AQI
41AQI
51AQI
74AQI
22AQI
24AQI
25AQI
29AQI
19AQI
28AQI
19AQI
24AQI
21AQI
34AQI
43AQI
50AQI
44AQI
34AQI
30AQI
18AQI
20AQI
38AQI
25AQI
26AQI
23AQI
22AQI
24AQI
18AQI
33AQI
50AQI
44AQI
53AQI
42AQI
33AQI
19AQI
21AQI
36AQI
51AQI
40AQI
36AQI
20AQI
31AQI
28AQI
54AQI
24AQI
18AQI
29AQI
36AQI
33AQI
20AQI
30AQI
26AQI
16AQI
16AQI
21AQI
36AQI
39AQI
17AQI
22AQI
29AQI
23AQI
36AQI
34AQI
34AQI
46AQI
34AQI
21AQI
19AQI
19AQI
25AQI
18AQI
15AQI
18AQI
16AQI
14AQI
20AQI
25AQI
30AQI
43AQI
47AQI
41AQI
37AQI
43AQI
58AQI
58AQI
99AQI
84AQI
84AQI
81AQI
72AQI
63AQI
74AQI
82AQI
78AQI
65AQI
52AQI
57AQI
52AQI
41AQI
33AQI
43AQI
46AQI
49AQI
57AQI
46AQI
34AQI
50AQI
40AQI
24AQI
38AQI
35AQI
33AQI
55AQI
54AQI
60AQI
74AQI
55AQI
54AQI
67AQI
53AQI
46AQI
48AQI
31AQI
57AQI
72AQI
77AQI
53AQI
26AQI
28AQI
40AQI
30AQI
72AQI
81AQI
65AQI
59AQI
37AQI
40AQI
36AQI
48AQI
50AQI
49AQI
95AQI
28AQI
33AQI
31AQI
32AQI
27AQI
56AQI
53AQI
No. of days
202537AQI
Highest AQI recorded in
June56AQI
Lowest AQI recorded in
May27AQI
202431AQI
Highest AQI recorded in
January44AQI
Lowest AQI recorded in
June22AQI
202340AQI
Highest AQI recorded in
June70AQI
Lowest AQI recorded in
April31AQI
202238AQI
Highest AQI recorded in
January45AQI
Lowest AQI recorded in
April31AQI
202139AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
June33AQI
202039AQI
Highest AQI recorded in
December42AQI
Lowest AQI recorded in
October18AQI
Most & Least Polluted Years Over the Last 6 Years
Oak Park's annual 2025 AQI (37) shows an average percentage change of -0.3% (improved AQI) compared to previous years: 2020 (39), 2021 (39), 2022 (38), 2023 (40), 2024 (31).
