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!
August Air Quality Analysis
Champaign, Illinois, United States
AQI Trends: Highest and Lowest
Same Day Analysis (5th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Champaign, Illinois, United States
5 AM5th Aug 2025
8 PM
4 AM6th Aug 2025
60AQI
52AQI
68AQI
61AQI
In the last 24 hours,
Champaign's AQI reached its highest point of 68 at 12 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Champaign, Illinois, United States
25°C20/31°C
25°C16/33°C
25°C19/30°C
25°C18/32°C
27°C20/35°C
26°C22/28°C
24°C20/30°C
25°C19/32°C
25°C19/30°C
27°C20/34°C
25°C20/30°C
23°C18/31°C
25°C20/29°C
24°C22/27°C
24°C22/27°C
25°C18/33°C
27°C21/34°C
28°C23/34°C
27°C24/34°C
27°C23/31°C
27°C23/34°C
28°C23/33°C
27°C20/35°C
27°C21/33°C
21°C18/26°C
20°C14/28°C
19°C11/27°C
19°C10/28°C
20°C14/27°C
22°C15/28°C
--°C/°C
47AQI
47AQI
46AQI
45AQI
2025 Days Vs Air Quality
Champaign, Illinois, United States
80%
106
19%
25
0.7%
1
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 80%
Health Risk Level:
Low
In 2025, 80% of 218 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
54AQI
30AQI
27AQI
24AQI
49AQI
43AQI
71AQI
No. of days
202537AQI
Highest AQI recorded in
August71AQI
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: .