Baldwin, 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
Baldwin, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Baldwin, Illinois, United States
6 AM29th Sep 2025
7 PM
5 AM30th Sep 2025
93AQI
43AQI
62AQI
47AQI
In the last 24 hours,
Baldwin's AQI reached its highest point of 93 at 11 AM during the Day, while the lowest point, 43, was recorded at 6 PM during the Day between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Baldwin, Illinois, United States
22°C15/28°C
21°C11/30°C
21°C14/30°C
23°C14/32°C
20°C15/26°C
20°C15/26°C
19°C14/27°C
17°C10/25°C
16°C3/26°C
19°C7/29°C
24°C15/33°C
25°C15/34°C
26°C16/35°C
28°C17/37°C
29°C21/38°C
27°C19/35°C
26°C17/35°C
25°C16/35°C
25°C13/36°C
24°C18/33°C
23°C19/29°C
24°C19/33°C
22°C19/27°C
23°C20/28°C
22°C21/24°C
22°C18/26°C
20°C13/30°C
21°C13/32°C
23°C14/33°C
23°C14/33°C
--°C/°C
45AQI
44AQI
44AQI
43AQI
2025 Days Vs Air Quality
Baldwin, Illinois, United States
75%
140
25%
47
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 75%
Health Risk Level:
Low
In 2025, 75% of 273 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
Baldwin, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
46AQI
45AQI
47AQI
32AQI
20AQI
28AQI
31AQI
25AQI
22AQI
18AQI
23AQI
26AQI
18AQI
22AQI
40AQI
39AQI
44AQI
43AQI
41AQI
23AQI
28AQI
45AQI
60AQI
40AQI
49AQI
21AQI
26AQI
32AQI
41AQI
40AQI
34AQI
24AQI
37AQI
41AQI
38AQI
27AQI
27AQI
30AQI
22AQI
19AQI
26AQI
23AQI
27AQI
25AQI
26AQI
32AQI
25AQI
22AQI
41AQI
54AQI
54AQI
27AQI
22AQI
29AQI
29AQI
16AQI
14AQI
17AQI
29AQI
34AQI
22AQI
21AQI
28AQI
37AQI
29AQI
41AQI
39AQI
44AQI
57AQI
61AQI
52AQI
47AQI
53AQI
52AQI
57AQI
61AQI
68AQI
79AQI
44AQI
38AQI
41AQI
28AQI
36AQI
34AQI
26AQI
38AQI
51AQI
53AQI
57AQI
55AQI
54AQI
52AQI
42AQI
28AQI
27AQI
29AQI
30AQI
38AQI
53AQI
60AQI
70AQI
59AQI
39AQI
39AQI
34AQI
42AQI
43AQI
39AQI
33AQI
33AQI
34AQI
34AQI
37AQI
31AQI
43AQI
52AQI
33AQI
41AQI
50AQI
54AQI
54AQI
44AQI
30AQI
36AQI
45AQI
47AQI
38AQI
89AQI
78AQI
51AQI
38AQI
40AQI
45AQI
50AQI
52AQI
49AQI
46AQI
44AQI
41AQI
38AQI
52AQI
53AQI
53AQI
53AQI
52AQI
51AQI
32AQI
22AQI
26AQI
36AQI
29AQI
25AQI
25AQI
30AQI
34AQI
42AQI
40AQI
32AQI
29AQI
29AQI
37AQI
60AQI
57AQI
33AQI
26AQI
25AQI
34AQI
48AQI
56AQI
59AQI
60AQI
57AQI
55AQI
59AQI
57AQI
56AQI
46AQI
51AQI
48AQI
38AQI
44AQI
37AQI
32AQI
30AQI
37AQI
37AQI
51AQI
38AQI
33AQI
28AQI
47AQI
42AQI
43AQI
44AQI
No. of days
202540AQI
Highest AQI recorded in
June47AQI
Lowest AQI recorded in
May28AQI
Most & Least Polluted Years Over the Last 1 Years
Baldwin's annual 2025 AQI (40) shows an average percentage change of NaN% (improved AQI) compared to previous years: .