Toppenish, 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
Toppenish, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 82 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Toppenish, Washington, United States
6 AM28th Sep 2025
7 PM
5 AM29th Sep 2025
72AQI
56AQI
89AQI
56AQI
In the last 24 hours,
Toppenish's AQI reached its highest point of 89 at 1 AM during the Night, while the lowest point, 56, was recorded at 9 PM during the Night between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Toppenish, Washington, United States
--°C/°C
27°C17/37°C
26°C18/37°C
27°C17/39°C
29°C18/42°C
28°C19/40°C
28°C18/38°C
25°C18/34°C
24°C16/34°C
21°C13/31°C
21°C13/31°C
23°C14/33°C
22°C15/32°C
21°C12/31°C
22°C13/33°C
18°C11/24°C
16°C7/26°C
19°C10/30°C
22°C12/32°C
21°C13/32°C
22°C13/33°C
23°C15/33°C
19°C10/28°C
17°C9/27°C
17°C6/28°C
18°C6/30°C
19°C8/32°C
17°C9/27°C
17°C6/29°C
17°C6/29°C
18°C11/28°C
63AQI
59AQI
63AQI
57AQI
2025 Days Vs Air Quality
Toppenish, Washington, United States
84%
229
15%
41
0.7%
2
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 273 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
Toppenish, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
45AQI
32AQI
26AQI
29AQI
32AQI
23AQI
27AQI
27AQI
23AQI
26AQI
26AQI
33AQI
37AQI
55AQI
57AQI
54AQI
43AQI
38AQI
40AQI
31AQI
49AQI
61AQI
65AQI
51AQI
24AQI
33AQI
46AQI
53AQI
61AQI
71AQI
70AQI
24AQI
25AQI
26AQI
32AQI
29AQI
32AQI
27AQI
39AQI
41AQI
27AQI
24AQI
37AQI
29AQI
23AQI
39AQI
51AQI
55AQI
48AQI
36AQI
37AQI
42AQI
57AQI
31AQI
21AQI
16AQI
24AQI
31AQI
36AQI
36AQI
40AQI
21AQI
22AQI
19AQI
19AQI
23AQI
29AQI
22AQI
18AQI
19AQI
23AQI
18AQI
18AQI
18AQI
16AQI
20AQI
18AQI
25AQI
17AQI
15AQI
16AQI
16AQI
16AQI
22AQI
28AQI
22AQI
21AQI
17AQI
28AQI
17AQI
21AQI
18AQI
26AQI
25AQI
37AQI
35AQI
28AQI
17AQI
23AQI
26AQI
17AQI
17AQI
24AQI
31AQI
37AQI
32AQI
22AQI
33AQI
24AQI
22AQI
15AQI
16AQI
28AQI
34AQI
34AQI
31AQI
29AQI
21AQI
19AQI
22AQI
29AQI
28AQI
19AQI
14AQI
19AQI
19AQI
30AQI
21AQI
29AQI
29AQI
21AQI
20AQI
16AQI
16AQI
21AQI
14AQI
15AQI
13AQI
14AQI
12AQI
15AQI
22AQI
22AQI
24AQI
27AQI
22AQI
17AQI
22AQI
24AQI
22AQI
32AQI
17AQI
22AQI
19AQI
22AQI
26AQI
28AQI
25AQI
35AQI
37AQI
39AQI
36AQI
31AQI
23AQI
20AQI
23AQI
28AQI
33AQI
20AQI
21AQI
22AQI
18AQI
17AQI
32AQI
46AQI
43AQI
23AQI
20AQI
14AQI
16AQI
31AQI
34AQI
22AQI
24AQI
21AQI
34AQI
21AQI
24AQI
31AQI
22AQI
15AQI
19AQI
21AQI
21AQI
22AQI
29AQI
39AQI
46AQI
37AQI
22AQI
20AQI
32AQI
32AQI
33AQI
38AQI
21AQI
18AQI
19AQI
22AQI
28AQI
32AQI
40AQI
48AQI
54AQI
40AQI
33AQI
49AQI
30AQI
17AQI
20AQI
21AQI
32AQI
33AQI
36AQI
35AQI
31AQI
22AQI
13AQI
16AQI
27AQI
26AQI
21AQI
21AQI
36AQI
44AQI
54AQI
59AQI
60AQI
61AQI
61AQI
57AQI
56AQI
54AQI
60AQI
64AQI
72AQI
92AQI
104AQI
113AQI
76AQI
50AQI
41AQI
55AQI
62AQI
59AQI
59AQI
39AQI
30AQI
47AQI
48AQI
51AQI
58AQI
61AQI
40AQI
38AQI
57AQI
59AQI
75AQI
68AQI
65AQI
62AQI
82AQI
42AQI
34AQI
21AQI
25AQI
21AQI
26AQI
27AQI
38AQI
62AQI
No. of days
202533AQI
Highest AQI recorded in
September62AQI
Lowest AQI recorded in
May21AQI
202429AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
May16AQI
202334AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
April21AQI
202236AQI
Highest AQI recorded in
September56AQI
Lowest AQI recorded in
June14AQI
202139AQI
Highest AQI recorded in
August87AQI
Lowest AQI recorded in
April25AQI
202040AQI
Highest AQI recorded in
September122AQI
Lowest AQI recorded in
May15AQI
Most & Least Polluted Years Over the Last 6 Years
Toppenish's annual 2025 AQI (33) shows an average percentage change of -7.4% (improved AQI) compared to previous years: 2020 (40), 2021 (39), 2022 (36), 2023 (34), 2024 (29).