West Main Street, Dayton, 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
West Main Street, Dayton, Washington, 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 57 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
West Main Street, Dayton, Washington, United States
6 AM29th Sep 2025
7 PM
5 AM30th Sep 2025
61AQI
55AQI
57AQI
46AQI
In the last 24 hours,
West Main Street's AQI reached its highest point of 61 at 3 PM during the Day, while the lowest point, 46, was recorded at 5 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
West Main Street, Dayton, Washington, United States
27°C20/35°C
27°C19/35°C
27°C18/36°C
30°C23/37°C
28°C20/36°C
28°C21/35°C
23°C17/31°C
22°C15/30°C
21°C14/30°C
21°C14/29°C
21°C15/27°C
19°C14/27°C
19°C13/26°C
22°C15/29°C
16°C12/21°C
14°C9/21°C
19°C10/28°C
22°C16/30°C
22°C14/29°C
23°C16/30°C
23°C18/30°C
18°C10/22°C
15°C9/22°C
18°C10/27°C
22°C14/30°C
20°C15/27°C
16°C10/22°C
18°C12/27°C
20°C15/27°C
19°C13/27°C
--°C/°C
56AQI
46AQI
52AQI
48AQI
2025 Days Vs Air Quality
West Main Street, Dayton, Washington, United States
87%
164
12%
23
0.5%
1
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% 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
West Main Street, Dayton, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
17AQI
17AQI
14AQI
15AQI
16AQI
16AQI
19AQI
16AQI
17AQI
18AQI
17AQI
18AQI
13AQI
12AQI
15AQI
15AQI
16AQI
19AQI
19AQI
22AQI
21AQI
16AQI
17AQI
18AQI
18AQI
13AQI
13AQI
15AQI
23AQI
21AQI
24AQI
26AQI
17AQI
14AQI
16AQI
16AQI
19AQI
15AQI
13AQI
13AQI
15AQI
15AQI
15AQI
16AQI
17AQI
16AQI
14AQI
13AQI
15AQI
16AQI
12AQI
13AQI
12AQI
13AQI
12AQI
12AQI
16AQI
16AQI
16AQI
18AQI
17AQI
14AQI
15AQI
15AQI
14AQI
17AQI
14AQI
13AQI
15AQI
17AQI
18AQI
18AQI
19AQI
21AQI
22AQI
24AQI
24AQI
32AQI
22AQI
18AQI
19AQI
20AQI
21AQI
16AQI
16AQI
16AQI
13AQI
13AQI
19AQI
31AQI
32AQI
18AQI
14AQI
14AQI
14AQI
17AQI
21AQI
23AQI
18AQI
17AQI
22AQI
18AQI
19AQI
20AQI
18AQI
15AQI
17AQI
19AQI
19AQI
20AQI
19AQI
25AQI
35AQI
27AQI
31AQI
34AQI
27AQI
27AQI
27AQI
27AQI
20AQI
16AQI
16AQI
17AQI
19AQI
21AQI
28AQI
41AQI
49AQI
35AQI
23AQI
30AQI
26AQI
17AQI
17AQI
17AQI
21AQI
29AQI
25AQI
33AQI
26AQI
25AQI
14AQI
16AQI
19AQI
21AQI
22AQI
22AQI
27AQI
51AQI
59AQI
52AQI
53AQI
57AQI
59AQI
54AQI
54AQI
60AQI
57AQI
59AQI
61AQI
63AQI
97AQI
119AQI
70AQI
52AQI
45AQI
54AQI
54AQI
51AQI
53AQI
39AQI
23AQI
28AQI
30AQI
29AQI
35AQI
48AQI
31AQI
27AQI
44AQI
38AQI
29AQI
40AQI
64AQI
53AQI
57AQI
16AQI
17AQI
15AQI
19AQI
22AQI
34AQI
50AQI
No. of days
202526AQI
Highest AQI recorded in
September50AQI
Lowest AQI recorded in
May15AQI
Most & Least Polluted Years Over the Last 1 Years
West Main Street's annual 2025 AQI (26) shows an average percentage change of NaN% (improved AQI) compared to previous years: .