East Deering, Portland, Maine, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
East Deering, Portland, Maine, United States
AQI Trends: Highest and Lowest
Same Day Analysis (22nd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 28 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Oct - 23rd Oct 2025
East Deering, Portland, Maine, United States
6 AM22nd Oct 2025
6 PM
5 AM23rd Oct 2025
32AQI
27AQI
33AQI
20AQI
In the last 24 hours,
East Deering's AQI reached its highest point of 33 at 7 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 22nd Oct and 23rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
East Deering, Portland, Maine, United States
18°C14/23°C
16°C15/17°C
17°C15/18°C
20°C17/24°C
17°C14/20°C
20°C16/28°C
19°C13/26°C
17°C15/22°C
14°C10/19°C
12°C8/18°C
14°C7/22°C
18°C10/27°C
17°C12/23°C
19°C14/25°C
19°C15/23°C
16°C10/18°C
10°C6/16°C
10°C3/16°C
12°C7/17°C
12°C9/15°C
13°C11/15°C
13°C10/17°C
13°C8/17°C
9°C7/12°C
12°C8/18°C
11°C7/16°C
12°C8/17°C
14°C12/15°C
13°C11/17°C
12°C9/16°C
--°C/°C
30AQI
21AQI
28AQI
22AQI
2025 Days Vs Air Quality
East Deering, Portland, Maine, United States
88%
184
12%
25
0.4%
1
Total number of days with different AQI categories in last 296 days in 2025 (69 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 296 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
East Deering, Portland, Maine, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
21AQI
19AQI
31AQI
24AQI
20AQI
18AQI
26AQI
29AQI
19AQI
14AQI
15AQI
17AQI
23AQI
22AQI
24AQI
18AQI
20AQI
19AQI
39AQI
18AQI
21AQI
27AQI
50AQI
19AQI
15AQI
30AQI
24AQI
21AQI
32AQI
34AQI
15AQI
18AQI
36AQI
22AQI
17AQI
41AQI
41AQI
26AQI
21AQI
19AQI
29AQI
28AQI
26AQI
14AQI
16AQI
21AQI
26AQI
31AQI
39AQI
37AQI
20AQI
17AQI
12AQI
12AQI
17AQI
25AQI
12AQI
13AQI
13AQI
16AQI
23AQI
31AQI
23AQI
27AQI
27AQI
15AQI
18AQI
23AQI
42AQI
63AQI
60AQI
55AQI
82AQI
79AQI
40AQI
49AQI
68AQI
41AQI
36AQI
35AQI
33AQI
29AQI
29AQI
39AQI
38AQI
31AQI
39AQI
54AQI
58AQI
53AQI
31AQI
26AQI
22AQI
28AQI
33AQI
44AQI
39AQI
50AQI
41AQI
34AQI
50AQI
55AQI
42AQI
34AQI
29AQI
24AQI
25AQI
20AQI
26AQI
36AQI
43AQI
41AQI
17AQI
28AQI
25AQI
28AQI
16AQI
25AQI
37AQI
52AQI
109AQI
79AQI
63AQI
59AQI
53AQI
74AQI
51AQI
25AQI
55AQI
85AQI
74AQI
49AQI
66AQI
37AQI
32AQI
39AQI
51AQI
64AQI
62AQI
52AQI
36AQI
32AQI
42AQI
18AQI
17AQI
18AQI
19AQI
30AQI
49AQI
42AQI
30AQI
18AQI
18AQI
21AQI
28AQI
20AQI
20AQI
32AQI
39AQI
32AQI
28AQI
38AQI
48AQI
28AQI
24AQI
20AQI
23AQI
26AQI
24AQI
24AQI
29AQI
31AQI
31AQI
32AQI
26AQI
24AQI
17AQI
19AQI
19AQI
26AQI
28AQI
19AQI
19AQI
18AQI
37AQI
40AQI
40AQI
21AQI
9AQI
15AQI
34AQI
48AQI
48AQI
44AQI
17AQI
15AQI
19AQI
23AQI
33AQI
35AQI
22AQI
16AQI
16AQI
28AQI
29AQI
28AQI
22AQI
17AQI
28AQI
24AQI
24AQI
23AQI
42AQI
42AQI
39AQI
28AQI
26AQI
No. of days
202532AQI
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
May23AQI
Most & Least Polluted Years Over the Last 1 Years
East Deering's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .