Water Street, Keene, New Hampshire, 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
Water Street, Keene, New Hampshire, United States
AQI Trends: Highest and Lowest
Same Day Analysis (21st October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 21 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Oct - 22nd Oct 2025
Water Street, Keene, New Hampshire, United States
6 AM21st Oct 2025
6 PM
5 AM22nd Oct 2025
27AQI
11AQI
48AQI
11AQI
In the last 24 hours,
Water Street's AQI reached its highest point of 48 at 2 AM during the Night, while the lowest point, 11, was recorded at 8 PM during the Night between 21st Oct and 22nd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Water Street, Keene, New Hampshire, United States
15°C4/26°C
18°C13/28°C
18°C16/20°C
18°C16/20°C
20°C17/27°C
19°C13/26°C
21°C15/31°C
18°C11/28°C
17°C11/28°C
13°C6/21°C
11°C4/19°C
13°C4/24°C
17°C8/29°C
19°C10/31°C
19°C12/29°C
20°C12/28°C
16°C10/18°C
8°C4/15°C
6°C-2/17°C
10°C3/18°C
10°C5/14°C
10°C9/12°C
12°C9/17°C
11°C5/15°C
8°C3/14°C
10°C3/18°C
9°C1/19°C
13°C7/22°C
15°C11/18°C
12°C8/17°C
--°C/°C
29AQI
25AQI
30AQI
26AQI
2025 Days Vs Air Quality
Water Street, Keene, New Hampshire, United States
88%
183
12%
25
0.4%
1
Total number of days with different AQI categories in last 295 days in 2025 (70 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 295 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
Water Street, Keene, New Hampshire, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
23AQI
20AQI
20AQI
35AQI
19AQI
17AQI
19AQI
22AQI
19AQI
15AQI
17AQI
14AQI
17AQI
23AQI
23AQI
16AQI
17AQI
25AQI
26AQI
11AQI
19AQI
23AQI
42AQI
17AQI
17AQI
22AQI
16AQI
22AQI
36AQI
21AQI
10AQI
19AQI
25AQI
17AQI
17AQI
26AQI
31AQI
23AQI
14AQI
14AQI
21AQI
20AQI
15AQI
13AQI
18AQI
21AQI
27AQI
29AQI
25AQI
32AQI
34AQI
17AQI
12AQI
12AQI
14AQI
14AQI
11AQI
13AQI
14AQI
21AQI
21AQI
25AQI
18AQI
26AQI
19AQI
13AQI
17AQI
22AQI
42AQI
60AQI
54AQI
50AQI
79AQI
77AQI
25AQI
47AQI
69AQI
49AQI
36AQI
43AQI
40AQI
27AQI
18AQI
31AQI
29AQI
53AQI
52AQI
49AQI
53AQI
48AQI
45AQI
28AQI
24AQI
29AQI
26AQI
37AQI
28AQI
40AQI
46AQI
35AQI
45AQI
51AQI
32AQI
25AQI
27AQI
29AQI
35AQI
28AQI
23AQI
33AQI
53AQI
37AQI
17AQI
21AQI
25AQI
26AQI
18AQI
22AQI
33AQI
44AQI
75AQI
91AQI
65AQI
58AQI
45AQI
66AQI
49AQI
33AQI
68AQI
89AQI
103AQI
66AQI
47AQI
47AQI
48AQI
55AQI
56AQI
57AQI
50AQI
40AQI
53AQI
46AQI
52AQI
15AQI
17AQI
16AQI
17AQI
23AQI
30AQI
27AQI
26AQI
16AQI
17AQI
20AQI
22AQI
17AQI
18AQI
24AQI
26AQI
26AQI
25AQI
28AQI
46AQI
35AQI
19AQI
18AQI
20AQI
24AQI
32AQI
35AQI
42AQI
39AQI
35AQI
25AQI
24AQI
25AQI
17AQI
18AQI
22AQI
28AQI
26AQI
16AQI
16AQI
19AQI
31AQI
23AQI
21AQI
19AQI
18AQI
29AQI
34AQI
51AQI
54AQI
47AQI
19AQI
25AQI
31AQI
31AQI
29AQI
28AQI
28AQI
23AQI
29AQI
30AQI
42AQI
33AQI
25AQI
21AQI
23AQI
20AQI
20AQI
41AQI
39AQI
40AQI
26AQI
31AQI
No. of days
202531AQI
Highest AQI recorded in
June41AQI
Lowest AQI recorded in
May20AQI
Most & Least Polluted Years Over the Last 1 Years
Water Street's annual 2025 AQI (31) shows an average percentage change of NaN% (improved AQI) compared to previous years: .