South Pass, Lander, Wyoming, 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
South Pass, Lander, Wyoming, United States
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 10 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
South Pass, Lander, Wyoming, United States
7 AM4th Oct 2025
7 PM
6 AM5th Oct 2025
15AQI
4AQI
19AQI
5AQI
In the last 24 hours,
South Pass's AQI reached its highest point of 19 at 8 PM during the Night, while the lowest point, 4, was recorded at 8 AM during the Day between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
South Pass, Lander, Wyoming, United States
14°C9/19°C
16°C8/25°C
20°C14/26°C
20°C14/27°C
18°C13/26°C
20°C12/30°C
20°C12/29°C
17°C12/23°C
14°C8/21°C
16°C10/23°C
15°C11/24°C
13°C8/18°C
13°C8/19°C
16°C9/24°C
17°C11/23°C
18°C13/24°C
18°C12/24°C
11°C7/15°C
12°C8/18°C
16°C9/24°C
19°C13/27°C
17°C12/25°C
18°C12/26°C
17°C14/24°C
17°C11/23°C
17°C12/24°C
15°C8/23°C
17°C10/26°C
17°C11/27°C
10°C5/13°C
--°C/°C
27AQI
21AQI
21AQI
20AQI
2025 Days Vs Air Quality
South Pass, Lander, Wyoming, United States
99%
275
0.7%
2
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 278 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
South Pass, Lander, Wyoming, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
32AQI
34AQI
31AQI
29AQI
28AQI
29AQI
33AQI
33AQI
31AQI
38AQI
30AQI
31AQI
39AQI
43AQI
37AQI
29AQI
31AQI
30AQI
31AQI
32AQI
36AQI
32AQI
34AQI
32AQI
31AQI
32AQI
34AQI
34AQI
33AQI
34AQI
35AQI
33AQI
31AQI
30AQI
28AQI
30AQI
34AQI
31AQI
31AQI
32AQI
32AQI
33AQI
32AQI
25AQI
21AQI
22AQI
20AQI
19AQI
19AQI
21AQI
24AQI
21AQI
25AQI
22AQI
21AQI
23AQI
25AQI
22AQI
25AQI
25AQI
25AQI
25AQI
20AQI
21AQI
20AQI
20AQI
21AQI
23AQI
22AQI
23AQI
24AQI
20AQI
18AQI
15AQI
16AQI
27AQI
19AQI
18AQI
16AQI
16AQI
16AQI
16AQI
16AQI
18AQI
21AQI
19AQI
37AQI
42AQI
20AQI
21AQI
17AQI
17AQI
16AQI
16AQI
13AQI
14AQI
19AQI
18AQI
34AQI
29AQI
34AQI
20AQI
22AQI
20AQI
20AQI
22AQI
19AQI
16AQI
15AQI
16AQI
18AQI
20AQI
18AQI
15AQI
14AQI
17AQI
17AQI
15AQI
15AQI
13AQI
14AQI
16AQI
19AQI
19AQI
16AQI
14AQI
15AQI
19AQI
16AQI
20AQI
21AQI
23AQI
28AQI
18AQI
14AQI
14AQI
14AQI
15AQI
13AQI
17AQI
14AQI
17AQI
18AQI
19AQI
16AQI
17AQI
18AQI
17AQI
16AQI
20AQI
18AQI
17AQI
17AQI
15AQI
15AQI
16AQI
17AQI
20AQI
27AQI
31AQI
23AQI
22AQI
20AQI
19AQI
23AQI
24AQI
22AQI
19AQI
19AQI
21AQI
23AQI
48AQI
49AQI
21AQI
20AQI
24AQI
25AQI
27AQI
32AQI
24AQI
19AQI
23AQI
24AQI
24AQI
23AQI
25AQI
25AQI
22AQI
20AQI
21AQI
21AQI
28AQI
25AQI
24AQI
22AQI
23AQI
25AQI
29AQI
35AQI
28AQI
29AQI
26AQI
20AQI
25AQI
27AQI
28AQI
34AQI
50AQI
43AQI
39AQI
34AQI
37AQI
34AQI
23AQI
19AQI
30AQI
40AQI
32AQI
28AQI
24AQI
24AQI
30AQI
37AQI
30AQI
33AQI
34AQI
28AQI
23AQI
18AQI
23AQI
17AQI
23AQI
28AQI
25AQI
32AQI
36AQI
50AQI
47AQI
23AQI
23AQI
31AQI
30AQI
28AQI
36AQI
28AQI
35AQI
50AQI
61AQI
64AQI
46AQI
40AQI
34AQI
26AQI
15AQI
15AQI
12AQI
16AQI
18AQI
19AQI
15AQI
16AQI
16AQI
18AQI
18AQI
16AQI
17AQI
14AQI
31AQI
34AQI
15AQI
13AQI
12AQI
9AQI
12AQI
9AQI
9AQI
10AQI
33AQI
26AQI
21AQI
19AQI
17AQI
23AQI
28AQI
29AQI
25AQI
10AQI
No. of days
202524AQI
Highest AQI recorded in
January33AQI
Lowest AQI recorded in
October10AQI
202437AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
November20AQI
202337AQI
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
September29AQI
202236AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
October31AQI
202138AQI
Highest AQI recorded in
August57AQI
Lowest AQI recorded in
October31AQI
202036AQI
Highest AQI recorded in
August45AQI
Lowest AQI recorded in
November31AQI
Most & Least Polluted Years Over the Last 6 Years
South Pass's annual 2025 AQI (24) shows an average percentage change of -33.5% (improved AQI) compared to previous years: 2020 (36), 2021 (38), 2022 (36), 2023 (37), 2024 (37).