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!
November Air Quality Analysis
Champaign, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (16th November ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 22 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 15th Nov - 16th Nov 2025
Champaign, Illinois, United States
7 AM15th Nov 2025
5 PM
6 AM16th Nov 2025
45AQI
22AQI
42AQI
22AQI
In the last 24 hours,
Champaign's AQI reached its highest point of 45 at 4 PM during the Day, while the lowest point, 22, was recorded at 6 AM during the Day between 15th Nov and 16th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Champaign, Illinois, United States
--°C/°C
21°C15/31°C
12°C8/16°C
13°C5/23°C
12°C9/16°C
9°C6/16°C
8°C2/16°C
8°C0/17°C
9°C3/16°C
14°C7/21°C
12°C6/20°C
11°C8/12°C
11°C7/17°C
8°C6/11°C
9°C6/12°C
6°C2/11°C
7°C0/15°C
9°C3/19°C
11°C2/21°C
14°C7/21°C
9°C0/20°C
15°C10/22°C
9°C4/13°C
2°C-2/2°C
-2°C-4/2°C
2°C-5/10°C
9°C3/17°C
9°C2/18°C
14°C5/26°C
18°C13/25°C
9°C2/15°C
32AQI
27AQI
29AQI
25AQI
2025 Days Vs Air Quality
Champaign, Illinois, United States
80%
187
20%
47
0.4%
1
Total number of days with different AQI categories in last 321 days in 2025 (44 days remaining)
Under WHO’s Safe Air Quality Limits: 80%
Health Risk Level:
Low
In 2025, 80% of 321 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, Illinois, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI
34AQI
38AQI
28AQI
17AQI
25AQI
24AQI
21AQI
29AQI
19AQI
20AQI
23AQI
17AQI
22AQI
35AQI
39AQI
33AQI
30AQI
29AQI
20AQI
23AQI
31AQI
47AQI
42AQI
34AQI
19AQI
22AQI
24AQI
29AQI
31AQI
22AQI
18AQI
25AQI
29AQI
20AQI
22AQI
20AQI
22AQI
16AQI
21AQI
29AQI
21AQI
24AQI
25AQI
28AQI
23AQI
26AQI
21AQI
24AQI
43AQI
33AQI
21AQI
17AQI
19AQI
22AQI
16AQI
16AQI
18AQI
19AQI
22AQI
20AQI
20AQI
25AQI
40AQI
34AQI
50AQI
33AQI
41AQI
57AQI
50AQI
53AQI
62AQI
69AQI
65AQI
61AQI
57AQI
65AQI
85AQI
76AQI
50AQI
46AQI
43AQI
30AQI
38AQI
26AQI
34AQI
40AQI
44AQI
57AQI
54AQI
49AQI
50AQI
40AQI
27AQI
34AQI
26AQI
28AQI
44AQI
49AQI
55AQI
72AQI
59AQI
54AQI
68AQI
47AQI
41AQI
45AQI
36AQI
41AQI
41AQI
50AQI
34AQI
26AQI
24AQI
29AQI
28AQI
33AQI
60AQI
61AQI
55AQI
44AQI
36AQI
26AQI
27AQI
30AQI
37AQI
52AQI
109AQI
85AQI
55AQI
51AQI
56AQI
55AQI
47AQI
54AQI
54AQI
50AQI
51AQI
41AQI
46AQI
58AQI
60AQI
53AQI
45AQI
46AQI
40AQI
22AQI
20AQI
30AQI
35AQI
25AQI
20AQI
26AQI
31AQI
34AQI
30AQI
27AQI
30AQI
30AQI
31AQI
37AQI
58AQI
52AQI
25AQI
29AQI
25AQI
30AQI
44AQI
53AQI
52AQI
57AQI
59AQI
53AQI
50AQI
54AQI
57AQI
58AQI
59AQI
47AQI
35AQI
38AQI
42AQI
25AQI
30AQI
34AQI
37AQI
34AQI
32AQI
45AQI
45AQI
51AQI
57AQI
49AQI
36AQI
25AQI
21AQI
24AQI
32AQI
46AQI
31AQI
47AQI
55AQI
52AQI
47AQI
40AQI
48AQI
21AQI
26AQI
21AQI
17AQI
18AQI
24AQI
30AQI
35AQI
31AQI
35AQI
28AQI
26AQI
35AQI
23AQI
29AQI
27AQI
28AQI
37AQI
29AQI
27AQI
37AQI
25AQI
12AQI
20AQI
21AQI
22AQI
44AQI
41AQI
22AQI
30AQI
27AQI
24AQI
49AQI
43AQI
45AQI
42AQI
35AQI
28AQI
No. of days
202537AQI
Highest AQI recorded in
June49AQI
Lowest AQI recorded in
May24AQI
Most & Least Polluted Years Over the Last 1 Years
Champaign's annual 2025 AQI (37) shows an average percentage change of NaN% (improved AQI) compared to previous years: .