Cheyenne, Wyoming, 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
Cheyenne, Wyoming, United States
AQI Trends: Highest and Lowest
Same Day Analysis (24th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 29 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 24th Aug - 25th Aug 2025
Cheyenne, Wyoming, United States
6 AM24th Aug 2025
8 PM
5 AM25th Aug 2025
35AQI
23AQI
35AQI
26AQI
In the last 24 hours,
Cheyenne's AQI reached its highest point of 35 at 11 AM during the Day, while the lowest point, 23, was recorded at 5 PM during the Day between 24th Aug and 25th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Cheyenne, Wyoming, United States
23°C12/33°C
23°C13/34°C
25°C14/35°C
21°C18/27°C
19°C15/24°C
18°C13/27°C
18°C13/29°C
18°C11/30°C
19°C11/29°C
22°C12/32°C
23°C11/34°C
24°C14/35°C
25°C15/35°C
23°C15/33°C
21°C12/28°C
16°C11/22°C
18°C9/26°C
20°C12/27°C
24°C12/35°C
23°C14/35°C
22°C13/32°C
22°C16/30°C
22°C15/30°C
22°C14/32°C
22°C13/32°C
23°C14/32°C
24°C14/34°C
17°C14/22°C
19°C15/25°C
15°C13/17°C
--°C/°C
33AQI
31AQI
33AQI
31AQI
2025 Days Vs Air Quality
Cheyenne, Wyoming, United States
100%
235
0.4%
1
Total number of days with different AQI categories in last 237 days in 2025 (128 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 237 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Cheyenne, Wyoming, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
28AQI
29AQI
31AQI
20AQI
27AQI
38AQI
34AQI
28AQI
27AQI
25AQI
23AQI
26AQI
22AQI
23AQI
30AQI
37AQI
28AQI
27AQI
26AQI
32AQI
26AQI
31AQI
30AQI
25AQI
37AQI
37AQI
32AQI
34AQI
29AQI
26AQI
25AQI
23AQI
25AQI
40AQI
40AQI
27AQI
29AQI
27AQI
25AQI
23AQI
29AQI
27AQI
25AQI
25AQI
22AQI
22AQI
21AQI
24AQI
21AQI
32AQI
24AQI
18AQI
22AQI
17AQI
18AQI
18AQI
18AQI
18AQI
18AQI
20AQI
20AQI
19AQI
17AQI
15AQI
16AQI
18AQI
19AQI
20AQI
19AQI
19AQI
23AQI
29AQI
16AQI
15AQI
19AQI
18AQI
18AQI
43AQI
17AQI
20AQI
17AQI
17AQI
18AQI
28AQI
24AQI
21AQI
29AQI
18AQI
24AQI
19AQI
18AQI
16AQI
17AQI
17AQI
17AQI
20AQI
17AQI
35AQI
36AQI
34AQI
23AQI
21AQI
17AQI
22AQI
21AQI
18AQI
13AQI
14AQI
15AQI
13AQI
15AQI
17AQI
25AQI
16AQI
15AQI
23AQI
15AQI
13AQI
15AQI
15AQI
16AQI
18AQI
18AQI
19AQI
16AQI
19AQI
18AQI
21AQI
22AQI
19AQI
19AQI
23AQI
22AQI
15AQI
16AQI
16AQI
22AQI
14AQI
14AQI
15AQI
17AQI
22AQI
25AQI
13AQI
16AQI
23AQI
18AQI
16AQI
22AQI
20AQI
22AQI
17AQI
18AQI
28AQI
30AQI
20AQI
23AQI
43AQI
48AQI
39AQI
27AQI
26AQI
25AQI
26AQI
22AQI
21AQI
23AQI
21AQI
21AQI
25AQI
36AQI
35AQI
26AQI
28AQI
23AQI
23AQI
24AQI
29AQI
27AQI
23AQI
27AQI
25AQI
23AQI
24AQI
29AQI
24AQI
21AQI
21AQI
21AQI
24AQI
31AQI
39AQI
32AQI
28AQI
25AQI
26AQI
34AQI
38AQI
31AQI
22AQI
23AQI
23AQI
23AQI
23AQI
25AQI
31AQI
29AQI
32AQI
38AQI
35AQI
44AQI
42AQI
28AQI
22AQI
31AQI
49AQI
57AQI
48AQI
44AQI
26AQI
22AQI
25AQI
23AQI
27AQI
31AQI
34AQI
34AQI
23AQI
25AQI
18AQI
24AQI
27AQI
31AQI
29AQI
29AQI
29AQI
24AQI
20AQI
19AQI
18AQI
27AQI
28AQI
31AQI
No. of days
202525AQI
Highest AQI recorded in
August31AQI
Lowest AQI recorded in
May18AQI
202429AQI
Highest AQI recorded in
September40AQI
Lowest AQI recorded in
February4AQI
202310AQI
Highest AQI recorded in
November21AQI
Lowest AQI recorded in
December9AQI
202033AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
March29AQI
Most & Least Polluted Years Over the Last 4 Years
Cheyenne's annual 2025 AQI (25) shows an average percentage change of 37.5% (worsened AQI) compared to previous years: 2020 (33), 2023 (10), 2024 (29).