Hermosa, Chicago, Illinois, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Hermosa, Chicago, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (1st October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 43 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Oct - 2nd Oct 2025
Hermosa, Chicago, Illinois, United States
6 AM1st Oct 2025
6 PM
5 AM2nd Oct 2025
47AQI
34AQI
48AQI
24AQI
In the last 24 hours,
Hermosa's AQI reached its highest point of 48 at 12 AM during the Night, while the lowest point, 24, was recorded at 3 AM during the Night between 1st Oct and 2nd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Hermosa, Chicago, Illinois, United States
22°C16/29°C
20°C16/25°C
17°C11/22°C
17°C14/21°C
15°C9/22°C
16°C10/22°C
18°C10/24°C
19°C11/25°C
22°C15/30°C
21°C18/25°C
22°C16/31°C
25°C18/34°C
23°C19/29°C
22°C18/29°C
22°C18/30°C
23°C17/30°C
23°C17/31°C
24°C19/31°C
23°C21/28°C
23°C19/28°C
24°C18/30°C
21°C18/26°C
20°C17/23°C
19°C15/24°C
22°C14/31°C
24°C16/34°C
22°C16/29°C
23°C15/32°C
22°C16/29°C
21°C17/25°C
--°C/°C
47AQI
46AQI
51AQI
48AQI
2025 Days Vs Air Quality
Hermosa, Chicago, Illinois, United States
65%
123
34%
65
0.5%
1
Total number of days with different AQI categories in last 275 days in 2025 (90 days remaining)
Under WHO’s Safe Air Quality Limits: 65%
Health Risk Level:
Moderate
In 2025, 65% of 275 days were within WHO’s safe air quality limits, and 35% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Hermosa, Chicago, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
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
50AQI
57AQI
46AQI
34AQI
50AQI
40AQI
24AQI
38AQI
34AQI
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
109AQI
88AQI
77AQI
84AQI
86AQI
88AQI
94AQI
72AQI
60AQI
58AQI
53AQI
48AQI
45AQI
52AQI
67AQI
74AQI
60AQI
37AQI
39AQI
32AQI
19AQI
19AQI
37AQI
36AQI
23AQI
19AQI
28AQI
38AQI
35AQI
18AQI
23AQI
37AQI
37AQI
43AQI
51AQI
42AQI
43AQI
22AQI
29AQI
33AQI
39AQI
55AQI
53AQI
54AQI
61AQI
63AQI
58AQI
57AQI
56AQI
60AQI
60AQI
62AQI
59AQI
46AQI
51AQI
24AQI
26AQI
44AQI
49AQI
52AQI
44AQI
52AQI
43AQI
35AQI
32AQI
27AQI
56AQI
54AQI
50AQI
48AQI
43AQI
No. of days
202544AQI
Highest AQI recorded in
June56AQI
Lowest AQI recorded in
May27AQI
Most & Least Polluted Years Over the Last 1 Years
Hermosa's annual 2025 AQI (44) shows an average percentage change of NaN% (improved AQI) compared to previous years: .