Soap Lake, Washington, 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
Soap Lake, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (25th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 121 of Poor air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 25th Sep - 26th Sep 2025
Soap Lake, Washington, United States
6 AM25th Sep 2025
7 PM
5 AM26th Sep 2025
136AQI
85AQI
110AQI
32AQI
In the last 24 hours,
Soap Lake's AQI reached its highest point of 136 at 8 AM during the Day, while the lowest point, 32, was recorded at 10 PM during the Night between 25th Sep and 26th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Soap Lake, Washington, United States
25°C17/32°C
25°C19/32°C
26°C16/35°C
25°C14/36°C
26°C16/37°C
26°C18/37°C
28°C16/39°C
29°C15/41°C
28°C16/39°C
27°C16/37°C
24°C15/35°C
24°C15/33°C
22°C13/31°C
22°C12/31°C
23°C13/32°C
21°C12/30°C
21°C12/30°C
21°C12/31°C
17°C14/22°C
18°C11/26°C
19°C10/29°C
21°C10/32°C
21°C11/32°C
23°C12/32°C
22°C13/32°C
18°C10/24°C
16°C9/24°C
17°C9/27°C
19°C10/28°C
18°C9/30°C
--°C/°C
63AQI
63AQI
65AQI
59AQI
2025 Days Vs Air Quality
Soap Lake, Washington, United States
86%
159
12%
22
2%
3
Total number of days with different AQI categories in last 269 days in 2025 (96 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 269 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
Soap Lake, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
17AQI
16AQI
15AQI
20AQI
17AQI
16AQI
16AQI
16AQI
18AQI
21AQI
33AQI
26AQI
13AQI
15AQI
18AQI
14AQI
17AQI
16AQI
26AQI
31AQI
22AQI
17AQI
22AQI
21AQI
15AQI
12AQI
12AQI
23AQI
33AQI
29AQI
28AQI
29AQI
19AQI
13AQI
14AQI
23AQI
22AQI
18AQI
13AQI
13AQI
17AQI
21AQI
15AQI
22AQI
24AQI
14AQI
19AQI
13AQI
14AQI
14AQI
12AQI
12AQI
12AQI
18AQI
10AQI
12AQI
16AQI
20AQI
20AQI
22AQI
16AQI
15AQI
18AQI
19AQI
13AQI
20AQI
12AQI
13AQI
14AQI
15AQI
19AQI
28AQI
22AQI
18AQI
26AQI
24AQI
25AQI
28AQI
18AQI
17AQI
18AQI
20AQI
25AQI
16AQI
16AQI
18AQI
12AQI
12AQI
33AQI
49AQI
41AQI
16AQI
13AQI
12AQI
14AQI
16AQI
20AQI
17AQI
15AQI
16AQI
23AQI
19AQI
20AQI
20AQI
16AQI
14AQI
16AQI
18AQI
17AQI
17AQI
18AQI
25AQI
29AQI
25AQI
22AQI
22AQI
31AQI
35AQI
32AQI
32AQI
16AQI
15AQI
17AQI
17AQI
17AQI
23AQI
24AQI
38AQI
39AQI
44AQI
34AQI
43AQI
31AQI
16AQI
15AQI
16AQI
21AQI
23AQI
22AQI
39AQI
39AQI
33AQI
12AQI
14AQI
18AQI
20AQI
17AQI
16AQI
23AQI
32AQI
39AQI
38AQI
50AQI
55AQI
56AQI
54AQI
53AQI
53AQI
59AQI
64AQI
72AQI
79AQI
107AQI
125AQI
98AQI
57AQI
52AQI
56AQI
61AQI
62AQI
62AQI
54AQI
38AQI
37AQI
42AQI
45AQI
56AQI
61AQI
56AQI
41AQI
54AQI
57AQI
121AQI
19AQI
20AQI
17AQI
20AQI
21AQI
32AQI
65AQI
No. of days
202528AQI
Highest AQI recorded in
September65AQI
Lowest AQI recorded in
May17AQI
Most & Least Polluted Years Over the Last 1 Years
Soap Lake's annual 2025 AQI (28) shows an average percentage change of NaN% (improved AQI) compared to previous years: .