Champaign Street, Champaign, 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
Champaign Street, Champaign, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 58 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Champaign Street, Champaign, Illinois, United States
6 AM4th Oct 2025
6 PM
5 AM5th Oct 2025
61AQI
53AQI
57AQI
53AQI
In the last 24 hours,
Champaign Street's AQI reached its highest point of 61 at 7 AM during the Day, while the lowest point, 53, was recorded at 1 AM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Champaign Street, Champaign, Illinois, United States
17°C10/23°C
16°C8/24°C
14°C5/23°C
15°C5/25°C
16°C5/26°C
21°C11/31°C
22°C12/32°C
22°C11/33°C
24°C15/35°C
25°C16/34°C
24°C15/34°C
22°C14/33°C
22°C11/33°C
24°C12/34°C
23°C15/30°C
24°C20/30°C
24°C17/32°C
22°C19/25°C
22°C17/30°C
21°C17/25°C
19°C14/26°C
20°C9/31°C
22°C12/33°C
24°C14/35°C
24°C14/35°C
24°C16/32°C
22°C14/32°C
23°C13/32°C
24°C16/33°C
24°C17/32°C
--°C/°C
44AQI
42AQI
45AQI
45AQI
2025 Days Vs Air Quality
Champaign Street, Champaign, Illinois, United States
73%
141
26%
50
0.5%
1
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 73%
Health Risk Level:
Low
In 2025, 73% of 278 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
Champaign Street, Champaign, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
41AQI
39AQI
45AQI
33AQI
17AQI
30AQI
28AQI
23AQI
32AQI
23AQI
26AQI
28AQI
19AQI
27AQI
40AQI
44AQI
42AQI
37AQI
35AQI
22AQI
25AQI
35AQI
54AQI
47AQI
39AQI
20AQI
27AQI
29AQI
38AQI
39AQI
25AQI
20AQI
31AQI
37AQI
25AQI
26AQI
24AQI
26AQI
18AQI
25AQI
37AQI
25AQI
29AQI
30AQI
34AQI
28AQI
32AQI
26AQI
30AQI
49AQI
40AQI
23AQI
18AQI
21AQI
26AQI
18AQI
16AQI
20AQI
20AQI
22AQI
22AQI
22AQI
26AQI
39AQI
35AQI
51AQI
35AQI
44AQI
58AQI
54AQI
55AQI
62AQI
70AQI
66AQI
62AQI
58AQI
67AQI
86AQI
77AQI
51AQI
47AQI
46AQI
33AQI
39AQI
27AQI
37AQI
41AQI
45AQI
58AQI
55AQI
50AQI
51AQI
42AQI
28AQI
36AQI
28AQI
30AQI
48AQI
52AQI
57AQI
79AQI
59AQI
53AQI
70AQI
49AQI
42AQI
46AQI
36AQI
43AQI
46AQI
54AQI
35AQI
25AQI
23AQI
28AQI
28AQI
35AQI
63AQI
62AQI
55AQI
44AQI
37AQI
26AQI
27AQI
31AQI
39AQI
52AQI
109AQI
86AQI
56AQI
51AQI
56AQI
54AQI
48AQI
55AQI
54AQI
50AQI
49AQI
42AQI
45AQI
58AQI
59AQI
54AQI
43AQI
46AQI
39AQI
21AQI
20AQI
30AQI
35AQI
25AQI
20AQI
26AQI
31AQI
34AQI
29AQI
26AQI
29AQI
30AQI
31AQI
36AQI
59AQI
52AQI
24AQI
29AQI
25AQI
30AQI
44AQI
52AQI
50AQI
56AQI
59AQI
53AQI
50AQI
54AQI
58AQI
59AQI
61AQI
47AQI
35AQI
36AQI
39AQI
25AQI
30AQI
38AQI
41AQI
37AQI
36AQI
46AQI
46AQI
52AQI
58AQI
35AQI
32AQI
28AQI
50AQI
44AQI
45AQI
43AQI
51AQI
No. of days
202540AQI
Highest AQI recorded in
October51AQI
Lowest AQI recorded in
May28AQI
Most & Least Polluted Years Over the Last 1 Years
Champaign Street's annual 2025 AQI (40) shows an average percentage change of NaN% (improved AQI) compared to previous years: .