Salmon, Idaho, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Salmon, Idaho, United States
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 26 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Salmon, Idaho, United States
7 AM29th Sep 2025
7 PM
6 AM30th Sep 2025
43AQI
20AQI
27AQI
13AQI
In the last 24 hours,
Salmon's AQI reached its highest point of 43 at 1 PM during the Day, while the lowest point, 13, was recorded at 6 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Salmon, Idaho, United States
18°C4/29°C
23°C14/30°C
20°C5/32°C
20°C6/32°C
19°C7/30°C
18°C10/27°C
20°C12/29°C
17°C11/27°C
15°C5/25°C
12°C3/26°C
13°C1/25°C
13°C2/24°C
11°C-1/21°C
14°C4/22°C
14°C5/24°C
11°C2/18°C
12°C0/21°C
14°C0/24°C
14°C1/26°C
16°C3/26°C
18°C10/27°C
15°C5/27°C
14°C8/22°C
13°C4/24°C
15°C6/26°C
17°C7/28°C
16°C8/24°C
15°C4/26°C
17°C7/28°C
18°C11/28°C
--°C/°C
35AQI
31AQI
35AQI
31AQI
2025 Days Vs Air Quality
Salmon, Idaho, United States
95%
179
5%
9
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 273 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
Salmon, Idaho, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
19AQI
24AQI
15AQI
17AQI
22AQI
19AQI
26AQI
19AQI
19AQI
25AQI
26AQI
25AQI
14AQI
22AQI
33AQI
30AQI
17AQI
20AQI
25AQI
25AQI
25AQI
18AQI
20AQI
21AQI
17AQI
13AQI
18AQI
20AQI
23AQI
20AQI
18AQI
18AQI
21AQI
15AQI
17AQI
21AQI
20AQI
23AQI
14AQI
14AQI
15AQI
18AQI
19AQI
21AQI
19AQI
16AQI
21AQI
18AQI
15AQI
15AQI
14AQI
16AQI
14AQI
15AQI
13AQI
17AQI
14AQI
16AQI
18AQI
20AQI
19AQI
22AQI
19AQI
19AQI
17AQI
18AQI
22AQI
14AQI
16AQI
16AQI
16AQI
18AQI
23AQI
20AQI
21AQI
21AQI
23AQI
22AQI
21AQI
20AQI
21AQI
22AQI
24AQI
20AQI
18AQI
21AQI
16AQI
16AQI
19AQI
27AQI
23AQI
20AQI
24AQI
18AQI
17AQI
18AQI
22AQI
26AQI
25AQI
23AQI
32AQI
18AQI
19AQI
20AQI
20AQI
22AQI
20AQI
23AQI
30AQI
23AQI
32AQI
22AQI
29AQI
40AQI
36AQI
37AQI
38AQI
28AQI
23AQI
30AQI
46AQI
21AQI
18AQI
18AQI
20AQI
21AQI
22AQI
37AQI
41AQI
27AQI
25AQI
22AQI
19AQI
28AQI
15AQI
16AQI
16AQI
18AQI
21AQI
26AQI
32AQI
33AQI
35AQI
34AQI
25AQI
23AQI
41AQI
39AQI
47AQI
44AQI
55AQI
56AQI
56AQI
42AQI
42AQI
47AQI
50AQI
53AQI
50AQI
46AQI
50AQI
57AQI
75AQI
60AQI
60AQI
38AQI
41AQI
46AQI
23AQI
22AQI
19AQI
20AQI
18AQI
16AQI
23AQI
24AQI
21AQI
19AQI
19AQI
14AQI
16AQI
18AQI
34AQI
38AQI
52AQI
31AQI
26AQI
20AQI
21AQI
17AQI
20AQI
26AQI
34AQI
34AQI
No. of days
202525AQI
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
May17AQI
Most & Least Polluted Years Over the Last 1 Years
Salmon's annual 2025 AQI (25) shows an average percentage change of NaN% (improved AQI) compared to previous years: .