East Sangamon Avenue, Springfield, 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
East Sangamon Avenue, Springfield, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (17th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Oct - 18th Oct 2025
East Sangamon Avenue, Springfield, Illinois, United States
6 AM17th Oct 2025
6 PM
5 AM18th Oct 2025
48AQI
38AQI
70AQI
41AQI
In the last 24 hours,
East Sangamon Avenue's AQI reached its highest point of 70 at 5 AM during the Night, while the lowest point, 38, was recorded at 1 PM during the Day between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
East Sangamon Avenue, Springfield, Illinois, United States
24°C12/36°C
23°C16/32°C
22°C18/30°C
23°C17/32°C
22°C18/28°C
23°C17/32°C
21°C19/25°C
19°C13/28°C
21°C11/31°C
22°C12/33°C
23°C12/35°C
24°C14/35°C
24°C15/34°C
23°C13/33°C
24°C16/34°C
24°C18/34°C
25°C18/33°C
23°C16/32°C
24°C19/32°C
18°C13/21°C
14°C6/24°C
15°C6/24°C
16°C8/25°C
19°C12/25°C
18°C9/28°C
21°C15/29°C
22°C14/30°C
21°C14/31°C
20°C14/29°C
22°C15/30°C
--°C/°C
51AQI
42AQI
50AQI
43AQI
2025 Days Vs Air Quality
East Sangamon Avenue, Springfield, Illinois, United States
76%
155
24%
49
0.4%
1
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Under WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 291 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
East Sangamon Avenue, Springfield, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
35AQI
33AQI
39AQI
26AQI
17AQI
28AQI
33AQI
21AQI
33AQI
25AQI
21AQI
25AQI
20AQI
23AQI
31AQI
41AQI
40AQI
38AQI
32AQI
21AQI
27AQI
41AQI
55AQI
47AQI
38AQI
19AQI
26AQI
28AQI
34AQI
39AQI
22AQI
19AQI
33AQI
31AQI
29AQI
27AQI
22AQI
21AQI
17AQI
21AQI
25AQI
26AQI
28AQI
25AQI
33AQI
28AQI
34AQI
24AQI
34AQI
52AQI
29AQI
21AQI
19AQI
25AQI
24AQI
15AQI
14AQI
17AQI
26AQI
29AQI
18AQI
19AQI
25AQI
36AQI
30AQI
45AQI
31AQI
45AQI
56AQI
35AQI
48AQI
62AQI
68AQI
60AQI
60AQI
56AQI
66AQI
77AQI
70AQI
54AQI
46AQI
44AQI
31AQI
31AQI
23AQI
35AQI
44AQI
48AQI
56AQI
53AQI
50AQI
53AQI
34AQI
29AQI
30AQI
27AQI
29AQI
41AQI
49AQI
56AQI
67AQI
56AQI
42AQI
64AQI
39AQI
40AQI
45AQI
31AQI
43AQI
43AQI
43AQI
32AQI
27AQI
28AQI
36AQI
40AQI
27AQI
34AQI
50AQI
53AQI
36AQI
37AQI
25AQI
33AQI
32AQI
36AQI
51AQI
111AQI
81AQI
54AQI
49AQI
55AQI
60AQI
54AQI
54AQI
54AQI
49AQI
48AQI
43AQI
45AQI
58AQI
59AQI
55AQI
49AQI
48AQI
43AQI
24AQI
21AQI
31AQI
38AQI
25AQI
21AQI
26AQI
33AQI
34AQI
37AQI
30AQI
30AQI
30AQI
29AQI
37AQI
62AQI
51AQI
27AQI
29AQI
26AQI
31AQI
44AQI
56AQI
58AQI
59AQI
57AQI
56AQI
54AQI
53AQI
53AQI
44AQI
52AQI
41AQI
33AQI
39AQI
33AQI
25AQI
32AQI
44AQI
49AQI
47AQI
30AQI
46AQI
52AQI
51AQI
59AQI
48AQI
46AQI
28AQI
32AQI
39AQI
50AQI
49AQI
39AQI
60AQI
61AQI
63AQI
57AQI
45AQI
30AQI
31AQI
26AQI
47AQI
41AQI
46AQI
43AQI
49AQI
No. of days
202539AQI
Highest AQI recorded in
October49AQI
Lowest AQI recorded in
May26AQI
Most & Least Polluted Years Over the Last 1 Years
East Sangamon Avenue's annual 2025 AQI (39) shows an average percentage change of NaN% (improved AQI) compared to previous years: .