State Route 9, Durham, 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
State Route 9, Durham, Maine, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 18 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 15th Oct - 16th Oct 2025
State Route 9, Durham, Maine, United States
6 AM15th Oct 2025
6 PM
5 AM16th Oct 2025
43AQI
6AQI
33AQI
6AQI
In the last 24 hours,
State Route 9's AQI reached its highest point of 43 at 11 AM during the Day, while the lowest point, 6, was recorded at 12 AM during the Night between 15th Oct and 16th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
State Route 9, Durham, Maine, United States
16°C10/25°C
14°C8/22°C
17°C12/24°C
19°C14/24°C
13°C8/19°C
12°C2/20°C
13°C4/21°C
17°C11/26°C
17°C13/21°C
16°C14/17°C
21°C16/27°C
18°C13/25°C
20°C14/30°C
19°C11/29°C
17°C12/26°C
12°C6/18°C
10°C3/18°C
12°C3/24°C
17°C6/30°C
17°C9/28°C
19°C10/30°C
19°C11/26°C
16°C8/18°C
8°C4/14°C
7°C0/16°C
10°C3/21°C
11°C5/19°C
11°C9/15°C
12°C8/19°C
11°C6/17°C
--°C/°C
30AQI
21AQI
28AQI
22AQI
2025 Days Vs Air Quality
State Route 9, Durham, Maine, United States
90%
182
10%
20
0.4%
1
Total number of days with different AQI categories in last 289 days in 2025 (76 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 289 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
State Route 9, Durham, Maine, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
23AQI
19AQI
28AQI
22AQI
18AQI
17AQI
19AQI
20AQI
16AQI
12AQI
15AQI
19AQI
16AQI
19AQI
24AQI
29AQI
19AQI
20AQI
23AQI
20AQI
19AQI
24AQI
38AQI
30AQI
13AQI
22AQI
16AQI
18AQI
23AQI
21AQI
10AQI
18AQI
32AQI
20AQI
16AQI
26AQI
26AQI
18AQI
19AQI
13AQI
21AQI
17AQI
18AQI
13AQI
17AQI
21AQI
21AQI
23AQI
27AQI
26AQI
18AQI
15AQI
12AQI
11AQI
14AQI
16AQI
11AQI
13AQI
12AQI
16AQI
22AQI
29AQI
23AQI
24AQI
23AQI
14AQI
16AQI
22AQI
37AQI
57AQI
61AQI
54AQI
69AQI
67AQI
36AQI
39AQI
62AQI
34AQI
30AQI
27AQI
30AQI
24AQI
21AQI
27AQI
31AQI
28AQI
31AQI
38AQI
53AQI
49AQI
28AQI
26AQI
23AQI
21AQI
27AQI
32AQI
27AQI
46AQI
37AQI
30AQI
38AQI
53AQI
35AQI
29AQI
29AQI
24AQI
25AQI
19AQI
18AQI
34AQI
47AQI
40AQI
17AQI
28AQI
26AQI
27AQI
16AQI
25AQI
30AQI
48AQI
108AQI
68AQI
59AQI
52AQI
52AQI
70AQI
42AQI
29AQI
58AQI
84AQI
66AQI
43AQI
55AQI
38AQI
32AQI
33AQI
48AQI
60AQI
59AQI
45AQI
31AQI
30AQI
36AQI
17AQI
18AQI
18AQI
22AQI
24AQI
35AQI
33AQI
25AQI
16AQI
19AQI
21AQI
23AQI
19AQI
20AQI
28AQI
31AQI
30AQI
26AQI
27AQI
38AQI
28AQI
23AQI
21AQI
23AQI
26AQI
22AQI
26AQI
29AQI
28AQI
23AQI
27AQI
22AQI
18AQI
17AQI
19AQI
15AQI
18AQI
22AQI
18AQI
18AQI
18AQI
27AQI
28AQI
33AQI
18AQI
13AQI
25AQI
43AQI
52AQI
47AQI
45AQI
19AQI
18AQI
25AQI
32AQI
36AQI
25AQI
21AQI
18AQI
24AQI
20AQI
19AQI
36AQI
38AQI
35AQI
24AQI
29AQI
No. of days
202529AQI
Highest AQI recorded in
July38AQI
Lowest AQI recorded in
May19AQI
Most & Least Polluted Years Over the Last 1 Years
State Route 9's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .