Cottonwood, Lewiston, Idaho, 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
Cottonwood, Lewiston, Idaho, United States
AQI Trends: Highest and Lowest
Same Day Analysis (22nd October ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 41 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Oct - 23rd Oct 2025
Cottonwood, Lewiston, Idaho, United States
6 AM22nd Oct 2025
6 PM
5 AM23rd Oct 2025
49AQI
34AQI
49AQI
20AQI
In the last 24 hours,
Cottonwood's AQI reached its highest point of 49 at 6 AM during the Night, while the lowest point, 20, was recorded at 1 AM during the Night between 22nd Oct and 23rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Cottonwood, Lewiston, Idaho, United States
14°C6/23°C
18°C12/25°C
18°C13/24°C
11°C6/17°C
14°C6/23°C
17°C11/25°C
17°C12/22°C
11°C8/17°C
10°C6/16°C
9°C5/15°C
8°C4/12°C
7°C4/11°C
6°C2/11°C
6°C1/13°C
10°C3/18°C
13°C8/19°C
16°C11/23°C
15°C7/22°C
10°C5/11°C
7°C3/8°C
4°C1/8°C
4°C0/8°C
3°C0/9°C
4°C-1/10°C
7°C3/12°C
5°C-3/12°C
7°C1/13°C
3°C-1/8°C
7°C2/14°C
10°C5/17°C
--°C/°C
39AQI
32AQI
38AQI
32AQI
2025 Days Vs Air Quality
Cottonwood, Lewiston, Idaho, United States
93%
275
7%
20
Total number of days with different AQI categories in last 296 days in 2025 (69 days remaining)
Under WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 296 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
Cottonwood, Lewiston, Idaho, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
43AQI
41AQI
28AQI
27AQI
31AQI
30AQI
39AQI
38AQI
27AQI
24AQI
27AQI
28AQI
35AQI
48AQI
40AQI
23AQI
30AQI
37AQI
32AQI
39AQI
37AQI
40AQI
40AQI
35AQI
33AQI
38AQI
44AQI
47AQI
49AQI
39AQI
21AQI
32AQI
32AQI
25AQI
23AQI
33AQI
31AQI
30AQI
30AQI
31AQI
38AQI
45AQI
46AQI
34AQI
19AQI
18AQI
26AQI
18AQI
25AQI
24AQI
19AQI
17AQI
12AQI
11AQI
13AQI
16AQI
17AQI
17AQI
21AQI
18AQI
22AQI
19AQI
16AQI
18AQI
16AQI
17AQI
19AQI
14AQI
15AQI
14AQI
19AQI
18AQI
18AQI
16AQI
18AQI
22AQI
21AQI
21AQI
33AQI
16AQI
19AQI
17AQI
20AQI
25AQI
22AQI
20AQI
19AQI
21AQI
20AQI
19AQI
23AQI
23AQI
26AQI
22AQI
21AQI
21AQI
15AQI
16AQI
25AQI
22AQI
19AQI
20AQI
24AQI
21AQI
22AQI
17AQI
18AQI
18AQI
16AQI
13AQI
17AQI
22AQI
26AQI
22AQI
23AQI
27AQI
20AQI
16AQI
17AQI
20AQI
24AQI
29AQI
16AQI
17AQI
19AQI
18AQI
18AQI
22AQI
20AQI
17AQI
17AQI
18AQI
18AQI
15AQI
17AQI
14AQI
14AQI
16AQI
13AQI
14AQI
18AQI
16AQI
20AQI
20AQI
22AQI
16AQI
21AQI
18AQI
16AQI
20AQI
21AQI
17AQI
17AQI
21AQI
20AQI
24AQI
27AQI
31AQI
27AQI
30AQI
30AQI
26AQI
24AQI
21AQI
22AQI
23AQI
25AQI
24AQI
21AQI
21AQI
16AQI
15AQI
19AQI
29AQI
28AQI
22AQI
20AQI
19AQI
17AQI
19AQI
23AQI
25AQI
25AQI
20AQI
25AQI
21AQI
20AQI
22AQI
23AQI
19AQI
19AQI
23AQI
21AQI
23AQI
23AQI
25AQI
29AQI
30AQI
29AQI
26AQI
25AQI
21AQI
24AQI
26AQI
24AQI
21AQI
20AQI
20AQI
20AQI
23AQI
32AQI
28AQI
31AQI
31AQI
24AQI
23AQI
27AQI
21AQI
18AQI
17AQI
18AQI
23AQI
25AQI
26AQI
30AQI
26AQI
26AQI
18AQI
24AQI
31AQI
33AQI
32AQI
48AQI
56AQI
58AQI
56AQI
57AQI
56AQI
55AQI
52AQI
50AQI
54AQI
52AQI
55AQI
60AQI
60AQI
75AQI
77AQI
68AQI
48AQI
47AQI
57AQI
33AQI
26AQI
32AQI
34AQI
18AQI
19AQI
25AQI
25AQI
27AQI
30AQI
30AQI
21AQI
28AQI
33AQI
54AQI
48AQI
64AQI
59AQI
43AQI
28AQI
17AQI
23AQI
27AQI
58AQI
39AQI
21AQI
35AQI
35AQI
33AQI
37AQI
32AQI
26AQI
28AQI
21AQI
28AQI
40AQI
40AQI
35AQI
34AQI
27AQI
31AQI
41AQI
36AQI
25AQI
19AQI
20AQI
18AQI
23AQI
23AQI
35AQI
43AQI
32AQI
No. of days
202527AQI
Highest AQI recorded in
September43AQI
Lowest AQI recorded in
May18AQI
202433AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
April4AQI
202310AQI
Highest AQI recorded in
November13AQI
Lowest AQI recorded in
December10AQI
202132AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
May18AQI
202032AQI
Highest AQI recorded in
September66AQI
Lowest AQI recorded in
May12AQI
Most & Least Polluted Years Over the Last 5 Years
Cottonwood's annual 2025 AQI (27) shows an average percentage change of 31.1% (worsened AQI) compared to previous years: 2020 (32), 2021 (32), 2023 (10), 2024 (33).