Maple Falls, 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
Maple Falls, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (29th September):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 41 of Good air quality on the same day.
Day & Night AQI Trend: 29th Sep - 30th Sep 2026
Maple Falls, Washington, United States
6 AM29th Sep 2026
7 PM
5 AM30th Sep 2026
76AQI
20AQI
70AQI
8AQI
In the last 24 hours,
Maple Falls's AQI reached its highest point of 76 at 1 PM during the Day, while the lowest point, 8, was recorded at 1 AM during the Night between 29th Sep and 30th Sep 2026.
Day & Night AQI Trend : Sep 2026
Maple Falls, Washington, United States
17°C11/23°C
18°C14/23°C
16°C11/23°C
15°C8/22°C
17°C11/26°C
18°C10/27°C
16°C11/22°C
18°C11/24°C
18°C10/25°C
18°C13/25°C
15°C9/21°C
17°C10/27°C
13°C11/16°C
14°C11/17°C
15°C11/22°C
16°C9/24°C
16°C10/25°C
16°C10/23°C
15°C11/22°C
15°C10/24°C
15°C10/22°C
14°C10/20°C
13°C9/17°C
12°C9/19°C
11°C10/15°C
11°C7/15°C
11°C6/18°C
11°C7/16°C
12°C9/14°C
11°C6/17°C
47AQI
40AQI
47AQI
41AQI
2026 Days Vs Air Quality
Maple Falls, Washington, United States
90%
242
9%
24
1%
3
Total number of days with different AQI categories in last 273 days in 2026 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 273 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Maple Falls, Washington, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
114AQI (US)
24AQI (US)
14AQI (US)
11AQI (US)
13AQI (US)
11AQI (US)
11AQI (US)
12AQI (US)
14AQI (US)
18AQI (US)
18AQI (US)
14AQI (US)
18AQI (US)
20AQI (US)
16AQI (US)
10AQI (US)
17AQI (US)
27AQI (US)
25AQI (US)
22AQI (US)
29AQI (US)
38AQI (US)
42AQI (US)
38AQI (US)
36AQI (US)
39AQI (US)
23AQI (US)
25AQI (US)
46AQI (US)
45AQI (US)
41AQI (US)
48AQI (US)
43AQI (US)
45AQI (US)
34AQI (US)
40AQI (US)
35AQI (US)
27AQI (US)
32AQI (US)
30AQI (US)
34AQI (US)
27AQI (US)
22AQI (US)
29AQI (US)
34AQI (US)
29AQI (US)
37AQI (US)
39AQI (US)
34AQI (US)
32AQI (US)
28AQI (US)
26AQI (US)
32AQI (US)
32AQI (US)
32AQI (US)
32AQI (US)
34AQI (US)
27AQI (US)
25AQI (US)
28AQI (US)
42AQI (US)
24AQI (US)
43AQI (US)
35AQI (US)
27AQI (US)
43AQI (US)
40AQI (US)
35AQI (US)
34AQI (US)
39AQI (US)
37AQI (US)
36AQI (US)
27AQI (US)
28AQI (US)
32AQI (US)
33AQI (US)
31AQI (US)
34AQI (US)
44AQI (US)
40AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
25AQI (US)
26AQI (US)
22AQI (US)
19AQI (US)
23AQI (US)
24AQI (US)
19AQI (US)
25AQI (US)
30AQI (US)
21AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
16AQI (US)
22AQI (US)
21AQI (US)
25AQI (US)
27AQI (US)
18AQI (US)
29AQI (US)
33AQI (US)
32AQI (US)
21AQI (US)
20AQI (US)
18AQI (US)
16AQI (US)
18AQI (US)
18AQI (US)
20AQI (US)
18AQI (US)
25AQI (US)
23AQI (US)
18AQI (US)
20AQI (US)
28AQI (US)
26AQI (US)
23AQI (US)
27AQI (US)
34AQI (US)
32AQI (US)
18AQI (US)
16AQI (US)
24AQI (US)
30AQI (US)
20AQI (US)
25AQI (US)
17AQI (US)
23AQI (US)
43AQI (US)
52AQI (US)
54AQI (US)
55AQI (US)
49AQI (US)
45AQI (US)
38AQI (US)
39AQI (US)
38AQI (US)
39AQI (US)
40AQI (US)
22AQI (US)
12AQI (US)
14AQI (US)
12AQI (US)
10AQI (US)
12AQI (US)
17AQI (US)
15AQI (US)
18AQI (US)
22AQI (US)
22AQI (US)
22AQI (US)
23AQI (US)
17AQI (US)
25AQI (US)
27AQI (US)
18AQI (US)
22AQI (US)
13AQI (US)
15AQI (US)
23AQI (US)
14AQI (US)
11AQI (US)
18AQI (US)
15AQI (US)
14AQI (US)
20AQI (US)
18AQI (US)
21AQI (US)
23AQI (US)
19AQI (US)
26AQI (US)
29AQI (US)
27AQI (US)
18AQI (US)
17AQI (US)
16AQI (US)
12AQI (US)
28AQI (US)
23AQI (US)
15AQI (US)
24AQI (US)
16AQI (US)
17AQI (US)
12AQI (US)
14AQI (US)
28AQI (US)
27AQI (US)
15AQI (US)
13AQI (US)
19AQI (US)
17AQI (US)
35AQI (US)
46AQI (US)
36AQI (US)
49AQI (US)
71AQI (US)
84AQI (US)
55AQI (US)
47AQI (US)
46AQI (US)
46AQI (US)
48AQI (US)
52AQI (US)
39AQI (US)
54AQI (US)
59AQI (US)
53AQI (US)
49AQI (US)
49AQI (US)
79AQI (US)
129AQI (US)
106AQI (US)
61AQI (US)
52AQI (US)
69AQI (US)
66AQI (US)
44AQI (US)
46AQI (US)
58AQI (US)
62AQI (US)
53AQI (US)
40AQI (US)
50AQI (US)
49AQI (US)
48AQI (US)
48AQI (US)
64AQI (US)
44AQI (US)
50AQI (US)
48AQI (US)
83AQI (US)
40AQI (US)
42AQI (US)
51AQI (US)
53AQI (US)
47AQI (US)
43AQI (US)
46AQI (US)
43AQI (US)
33AQI (US)
42AQI (US)
39AQI (US)
45AQI (US)
36AQI (US)
40AQI (US)
49AQI (US)
46AQI (US)
50AQI (US)
45AQI (US)
41AQI (US)
32AQI (US)
40AQI (US)
45AQI (US)
46AQI (US)
45AQI (US)
49AQI (US)
47AQI (US)
52AQI (US)
48AQI (US)
62AQI (US)
49AQI (US)
45AQI (US)
25AQI (US)
39AQI (US)
43AQI (US)
41AQI (US)
27AQI (US)
33AQI (US)
32AQI (US)
23AQI (US)
30AQI (US)
20AQI (US)
34AQI (US)
57AQI (US)
44AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
August57AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
202530AQI (US)
Highest AQI (US) recorded in
November38AQI (US)
Lowest AQI (US) recorded in
May22AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Maple Falls's annual 2026 AQI (US) (33) shows an average percentage change of 10% (worsened AQI (US)) compared to previous years: 2025 (30).