Spokane Valley, Washington, 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
Spokane Valley, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 19 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Oct - 15th Oct 2025
Spokane Valley, Washington, United States
6 AM14th Oct 2025
6 PM
5 AM15th Oct 2025
40AQI
9AQI
41AQI
18AQI
In the last 24 hours,
Spokane Valley's AQI reached its highest point of 41 at 5 AM during the Night, while the lowest point, 9, was recorded at 8 AM during the Day between 14th Oct and 15th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Spokane Valley, Washington, United States
13°C11/15°C
20°C11/30°C
23°C14/32°C
22°C13/32°C
23°C15/33°C
24°C15/32°C
17°C12/24°C
14°C7/23°C
16°C7/28°C
19°C8/31°C
19°C9/30°C
16°C8/24°C
16°C7/27°C
20°C10/32°C
18°C10/28°C
16°C12/23°C
15°C10/23°C
13°C9/19°C
13°C6/22°C
13°C8/21°C
12°C5/19°C
10°C1/20°C
12°C2/25°C
15°C4/26°C
20°C13/30°C
18°C11/25°C
9°C8/9°C
7°C5/8°C
6°C2/12°C
6°C0/13°C
--°C/°C
42AQI
38AQI
44AQI
39AQI
2025 Days Vs Air Quality
Spokane Valley, Washington, United States
86%
248
13%
37
0.7%
2
Total number of days with different AQI categories in last 288 days in 2025 (77 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 288 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
Spokane Valley, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
49AQI
46AQI
25AQI
24AQI
25AQI
22AQI
26AQI
25AQI
30AQI
32AQI
29AQI
49AQI
35AQI
41AQI
45AQI
34AQI
37AQI
55AQI
56AQI
48AQI
43AQI
60AQI
55AQI
54AQI
53AQI
57AQI
57AQI
57AQI
60AQI
62AQI
42AQI
17AQI
21AQI
21AQI
20AQI
26AQI
44AQI
29AQI
36AQI
55AQI
44AQI
46AQI
57AQI
39AQI
25AQI
29AQI
28AQI
33AQI
28AQI
28AQI
23AQI
35AQI
27AQI
22AQI
20AQI
17AQI
20AQI
25AQI
36AQI
37AQI
45AQI
28AQI
29AQI
20AQI
28AQI
32AQI
24AQI
23AQI
17AQI
20AQI
21AQI
16AQI
19AQI
21AQI
14AQI
18AQI
21AQI
17AQI
16AQI
16AQI
16AQI
16AQI
17AQI
19AQI
28AQI
24AQI
18AQI
16AQI
27AQI
17AQI
16AQI
20AQI
19AQI
25AQI
33AQI
38AQI
32AQI
13AQI
13AQI
29AQI
22AQI
27AQI
20AQI
32AQI
36AQI
31AQI
16AQI
21AQI
22AQI
21AQI
14AQI
20AQI
25AQI
38AQI
37AQI
36AQI
36AQI
31AQI
17AQI
18AQI
23AQI
30AQI
30AQI
15AQI
15AQI
21AQI
28AQI
16AQI
25AQI
33AQI
21AQI
15AQI
16AQI
19AQI
20AQI
20AQI
17AQI
13AQI
14AQI
14AQI
13AQI
18AQI
20AQI
26AQI
29AQI
26AQI
15AQI
25AQI
26AQI
15AQI
28AQI
20AQI
13AQI
18AQI
21AQI
27AQI
28AQI
27AQI
26AQI
33AQI
34AQI
39AQI
46AQI
28AQI
21AQI
24AQI
25AQI
31AQI
27AQI
24AQI
24AQI
23AQI
21AQI
24AQI
49AQI
40AQI
26AQI
17AQI
14AQI
20AQI
24AQI
35AQI
40AQI
39AQI
26AQI
31AQI
28AQI
31AQI
32AQI
24AQI
22AQI
30AQI
32AQI
25AQI
22AQI
20AQI
28AQI
39AQI
33AQI
33AQI
35AQI
28AQI
37AQI
34AQI
37AQI
21AQI
16AQI
29AQI
18AQI
25AQI
33AQI
37AQI
40AQI
48AQI
44AQI
27AQI
31AQI
31AQI
22AQI
17AQI
22AQI
23AQI
27AQI
28AQI
39AQI
45AQI
23AQI
13AQI
14AQI
18AQI
22AQI
24AQI
26AQI
33AQI
50AQI
45AQI
49AQI
54AQI
58AQI
58AQI
54AQI
53AQI
67AQI
59AQI
64AQI
79AQI
91AQI
95AQI
112AQI
69AQI
50AQI
52AQI
72AQI
58AQI
54AQI
61AQI
46AQI
24AQI
36AQI
50AQI
52AQI
52AQI
54AQI
43AQI
28AQI
37AQI
47AQI
67AQI
57AQI
94AQI
109AQI
58AQI
36AQI
20AQI
19AQI
24AQI
35AQI
10AQI
33AQI
35AQI
42AQI
44AQI
42AQI
29AQI
20AQI
20AQI
19AQI
43AQI
30AQI
22AQI
25AQI
21AQI
26AQI
30AQI
36AQI
60AQI
28AQI
No. of days
202532AQI
Highest AQI recorded in
September60AQI
Lowest AQI recorded in
May21AQI
202426AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
May18AQI
202329AQI
Highest AQI recorded in
August58AQI
Lowest AQI recorded in
April15AQI
202230AQI
Highest AQI recorded in
September60AQI
Lowest AQI recorded in
June14AQI
202130AQI
Highest AQI recorded in
August94AQI
Lowest AQI recorded in
June18AQI
202037AQI
Highest AQI recorded in
September88AQI
Lowest AQI recorded in
June19AQI
Most & Least Polluted Years Over the Last 6 Years
Spokane Valley's annual 2025 AQI (32) shows an average percentage change of 7.8% (worsened AQI) compared to previous years: 2020 (37), 2021 (30), 2022 (30), 2023 (29), 2024 (26).