LaCrosse, 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
LaCrosse, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 63 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
LaCrosse, Washington, United States
6 AM28th Sep 2025
7 PM
5 AM29th Sep 2025
73AQI
55AQI
77AQI
56AQI
In the last 24 hours,
LaCrosse's AQI reached its highest point of 77 at 3 AM during the Night, while the lowest point, 55, was recorded at 3 PM during the Day between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
LaCrosse, Washington, United States
--°C/°C
28°C18/38°C
27°C18/37°C
28°C18/38°C
29°C19/39°C
29°C20/37°C
28°C17/37°C
23°C16/34°C
24°C16/32°C
23°C15/31°C
24°C16/31°C
23°C16/30°C
22°C17/29°C
21°C15/28°C
22°C14/31°C
18°C15/22°C
15°C13/20°C
20°C10/30°C
22°C13/32°C
23°C14/31°C
24°C15/32°C
24°C17/31°C
18°C13/23°C
16°C9/24°C
19°C10/29°C
22°C13/31°C
21°C14/29°C
16°C11/23°C
18°C11/28°C
21°C13/29°C
20°C15/27°C
59AQI
53AQI
53AQI
53AQI
2025 Days Vs Air Quality
LaCrosse, Washington, United States
87%
163
12%
22
1%
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: 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
LaCrosse, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
16AQI
16AQI
14AQI
15AQI
16AQI
16AQI
16AQI
15AQI
16AQI
15AQI
18AQI
19AQI
13AQI
12AQI
15AQI
15AQI
15AQI
16AQI
20AQI
24AQI
21AQI
18AQI
17AQI
15AQI
17AQI
13AQI
13AQI
17AQI
26AQI
20AQI
25AQI
29AQI
18AQI
14AQI
16AQI
17AQI
20AQI
15AQI
13AQI
13AQI
14AQI
14AQI
14AQI
16AQI
19AQI
17AQI
15AQI
13AQI
14AQI
15AQI
13AQI
12AQI
12AQI
12AQI
11AQI
11AQI
14AQI
16AQI
15AQI
17AQI
17AQI
13AQI
14AQI
15AQI
14AQI
19AQI
25AQI
13AQI
14AQI
15AQI
17AQI
18AQI
18AQI
19AQI
21AQI
22AQI
26AQI
37AQI
20AQI
18AQI
18AQI
19AQI
21AQI
16AQI
16AQI
17AQI
12AQI
12AQI
22AQI
37AQI
33AQI
18AQI
14AQI
12AQI
15AQI
16AQI
19AQI
22AQI
18AQI
17AQI
18AQI
17AQI
19AQI
20AQI
18AQI
15AQI
18AQI
20AQI
18AQI
17AQI
18AQI
31AQI
38AQI
25AQI
29AQI
37AQI
27AQI
35AQI
32AQI
28AQI
19AQI
16AQI
15AQI
16AQI
23AQI
21AQI
28AQI
40AQI
48AQI
40AQI
26AQI
34AQI
28AQI
17AQI
16AQI
17AQI
20AQI
32AQI
24AQI
39AQI
34AQI
25AQI
15AQI
16AQI
19AQI
21AQI
23AQI
21AQI
28AQI
54AQI
53AQI
49AQI
52AQI
56AQI
57AQI
54AQI
55AQI
61AQI
58AQI
60AQI
68AQI
72AQI
111AQI
121AQI
72AQI
52AQI
47AQI
54AQI
56AQI
52AQI
57AQI
42AQI
23AQI
31AQI
32AQI
32AQI
38AQI
51AQI
33AQI
26AQI
43AQI
41AQI
36AQI
60AQI
68AQI
63AQI
16AQI
17AQI
15AQI
19AQI
22AQI
35AQI
54AQI
No. of days
202526AQI
Highest AQI recorded in
September54AQI
Lowest AQI recorded in
May15AQI
Most & Least Polluted Years Over the Last 1 Years
LaCrosse's annual 2025 AQI (26) shows an average percentage change of NaN% (improved AQI) compared to previous years: .