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!
August Air Quality Analysis
Keene, New Hampshire, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 28 of Good air quality, showing improvement over 2025 and 2024 on the same day.
Day & Night AQI Trend: 13th Aug - 14th Aug 2026
Keene, New Hampshire, United States
5 AM13th Aug 2026
8 PM
4 AM14th Aug 2026
34AQI
21AQI
32AQI
23AQI
In the last 24 hours,
Keene's AQI reached its highest point of 34 at 2 PM during the Day, while the lowest point, 21, was recorded at 6 AM during the Day between 13th Aug and 14th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Keene, New Hampshire, United States
22°C15/32°C
21°C13/29°C
21°C15/30°C
21°C17/27°C
20°C12/28°C
20°C15/28°C
23°C17/30°C
20°C13/27°C
21°C12/29°C
22°C14/31°C
21°C14/30°C
22°C14/32°C
22°C18/28°C
20°C18/23°C
20°C18/25°C
22°C15/28°C
24°C17/31°C
24°C21/30°C
23°C19/26°C
22°C16/30°C
23°C16/30°C
25°C20/32°C
27°C21/33°C
25°C21/31°C
24°C20/32°C
23°C17/29°C
24°C19/30°C
22°C16/29°C
22°C17/29°C
21°C15/28°C
38AQI
29AQI
34AQI
29AQI
2026 Days Vs Air Quality
Keene, New Hampshire, United States
93%
207
7%
16
Total number of days with different AQI categories in last 226 days in 2026 (139 days remaining)
Under WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2026, 93% of 226 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
Keene, New Hampshire, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI (US)
19AQI (US)
30AQI (US)
17AQI (US)
25AQI (US)
52AQI (US)
35AQI (US)
33AQI (US)
36AQI (US)
19AQI (US)
15AQI (US)
11AQI (US)
26AQI (US)
36AQI (US)
42AQI (US)
11AQI (US)
34AQI (US)
49AQI (US)
24AQI (US)
28AQI (US)
27AQI (US)
50AQI (US)
48AQI (US)
45AQI (US)
58AQI (US)
48AQI (US)
37AQI (US)
31AQI (US)
46AQI (US)
57AQI (US)
45AQI (US)
45AQI (US)
48AQI (US)
45AQI (US)
38AQI (US)
51AQI (US)
42AQI (US)
27AQI (US)
44AQI (US)
46AQI (US)
40AQI (US)
29AQI (US)
39AQI (US)
48AQI (US)
40AQI (US)
24AQI (US)
41AQI (US)
37AQI (US)
36AQI (US)
41AQI (US)
38AQI (US)
32AQI (US)
35AQI (US)
37AQI (US)
45AQI (US)
37AQI (US)
28AQI (US)
34AQI (US)
34AQI (US)
37AQI (US)
61AQI (US)
37AQI (US)
46AQI (US)
34AQI (US)
29AQI (US)
39AQI (US)
38AQI (US)
37AQI (US)
26AQI (US)
35AQI (US)
37AQI (US)
42AQI (US)
33AQI (US)
33AQI (US)
36AQI (US)
34AQI (US)
31AQI (US)
35AQI (US)
28AQI (US)
37AQI (US)
33AQI (US)
41AQI (US)
37AQI (US)
32AQI (US)
18AQI (US)
25AQI (US)
32AQI (US)
24AQI (US)
18AQI (US)
19AQI (US)
27AQI (US)
30AQI (US)
26AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
28AQI (US)
35AQI (US)
30AQI (US)
25AQI (US)
29AQI (US)
25AQI (US)
22AQI (US)
18AQI (US)
25AQI (US)
24AQI (US)
29AQI (US)
33AQI (US)
29AQI (US)
27AQI (US)
19AQI (US)
25AQI (US)
28AQI (US)
32AQI (US)
27AQI (US)
25AQI (US)
21AQI (US)
24AQI (US)
26AQI (US)
23AQI (US)
22AQI (US)
32AQI (US)
32AQI (US)
22AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
18AQI (US)
46AQI (US)
49AQI (US)
50AQI (US)
54AQI (US)
52AQI (US)
44AQI (US)
38AQI (US)
34AQI (US)
37AQI (US)
43AQI (US)
41AQI (US)
25AQI (US)
14AQI (US)
16AQI (US)
22AQI (US)
20AQI (US)
27AQI (US)
24AQI (US)
18AQI (US)
13AQI (US)
16AQI (US)
40AQI (US)
69AQI (US)
40AQI (US)
40AQI (US)
61AQI (US)
68AQI (US)
73AQI (US)
71AQI (US)
66AQI (US)
59AQI (US)
43AQI (US)
20AQI (US)
18AQI (US)
18AQI (US)
23AQI (US)
22AQI (US)
20AQI (US)
23AQI (US)
20AQI (US)
22AQI (US)
18AQI (US)
20AQI (US)
26AQI (US)
12AQI (US)
15AQI (US)
15AQI (US)
17AQI (US)
26AQI (US)
25AQI (US)
14AQI (US)
18AQI (US)
17AQI (US)
18AQI (US)
18AQI (US)
13AQI (US)
23AQI (US)
18AQI (US)
12AQI (US)
18AQI (US)
21AQI (US)
52AQI (US)
39AQI (US)
44AQI (US)
74AQI (US)
41AQI (US)
26AQI (US)
38AQI (US)
26AQI (US)
24AQI (US)
26AQI (US)
31AQI (US)
30AQI (US)
38AQI (US)
47AQI (US)
31AQI (US)
26AQI (US)
29AQI (US)
35AQI (US)
36AQI (US)
32AQI (US)
19AQI (US)
28AQI (US)
36AQI (US)
29AQI (US)
26AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
26AQI (US)
26AQI (US)
28AQI (US)
34AQI (US)
39AQI (US)
34AQI (US)
27AQI (US)
31AQI (US)
33AQI (US)
28AQI (US)
28AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
February39AQI (US)
Lowest AQI (US) recorded in
April27AQI (US)
202531AQI (US)
Highest AQI (US) recorded in
June41AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202430AQI (US)
Highest AQI (US) recorded in
February37AQI (US)
Lowest AQI (US) recorded in
September24AQI (US)
202335AQI (US)
Highest AQI (US) recorded in
July44AQI (US)
Lowest AQI (US) recorded in
October27AQI (US)
202231AQI (US)
Highest AQI (US) recorded in
January43AQI (US)
Lowest AQI (US) recorded in
September20AQI (US)
202134AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
October24AQI (US)
202031AQI (US)
Highest AQI (US) recorded in
December39AQI (US)
Lowest AQI (US) recorded in
October27AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Keene's annual 2026 AQI (US) (32) shows an average percentage change of 0.3% (worsened AQI (US)) compared to previous years: 2020 (31), 2021 (34), 2022 (31), 2023 (35), 2024 (30), 2025 (31).