Stilwell Castnet Ncore, Tahlequah, Oklahoma, 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
Stilwell Castnet Ncore, Tahlequah, Oklahoma, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 50 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 14th Aug - 15th Aug 2026
Stilwell Castnet Ncore, Tahlequah, Oklahoma, United States
6 AM14th Aug 2026
8 PM
5 AM15th Aug 2026
63AQI
44AQI
57AQI
48AQI
In the last 24 hours,
Stilwell Castnet Ncore's AQI reached its highest point of 63 at 12 PM during the Day, while the lowest point, 44, was recorded at 7 PM during the Day between 14th Aug and 15th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Stilwell Castnet Ncore, Tahlequah, Oklahoma, United States
27°C21/33°C
28°C23/35°C
29°C23/36°C
30°C23/37°C
30°C24/38°C
27°C22/33°C
27°C20/35°C
27°C22/33°C
30°C24/37°C
31°C25/38°C
31°C24/38°C
31°C23/38°C
31°C25/38°C
30°C23/36°C
31°C25/38°C
25°C20/31°C
25°C18/33°C
27°C19/36°C
29°C21/37°C
30°C23/39°C
31°C24/38°C
31°C24/38°C
30°C21/39°C
30°C22/39°C
31°C24/39°C
31°C24/39°C
32°C25/40°C
33°C25/41°C
33°C26/40°C
32°C25/40°C
53AQI
51AQI
54AQI
52AQI
2026 Days Vs Air Quality
Stilwell Castnet Ncore, Tahlequah, Oklahoma, United States
87%
194
13%
30
Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 227 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
Stilwell Castnet Ncore, Tahlequah, Oklahoma, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI (US)
33AQI (US)
51AQI (US)
54AQI (US)
40AQI (US)
28AQI (US)
28AQI (US)
36AQI (US)
16AQI (US)
17AQI (US)
15AQI (US)
19AQI (US)
17AQI (US)
18AQI (US)
14AQI (US)
30AQI (US)
16AQI (US)
15AQI (US)
21AQI (US)
42AQI (US)
50AQI (US)
59AQI (US)
55AQI (US)
36AQI (US)
46AQI (US)
38AQI (US)
35AQI (US)
51AQI (US)
53AQI (US)
54AQI (US)
36AQI (US)
44AQI (US)
44AQI (US)
44AQI (US)
35AQI (US)
41AQI (US)
37AQI (US)
35AQI (US)
36AQI (US)
46AQI (US)
39AQI (US)
34AQI (US)
34AQI (US)
45AQI (US)
40AQI (US)
35AQI (US)
42AQI (US)
42AQI (US)
47AQI (US)
43AQI (US)
30AQI (US)
31AQI (US)
35AQI (US)
35AQI (US)
42AQI (US)
41AQI (US)
40AQI (US)
36AQI (US)
40AQI (US)
41AQI (US)
49AQI (US)
32AQI (US)
33AQI (US)
26AQI (US)
18AQI (US)
28AQI (US)
36AQI (US)
31AQI (US)
33AQI (US)
34AQI (US)
34AQI (US)
35AQI (US)
29AQI (US)
35AQI (US)
18AQI (US)
26AQI (US)
35AQI (US)
46AQI (US)
59AQI (US)
40AQI (US)
37AQI (US)
33AQI (US)
27AQI (US)
38AQI (US)
39AQI (US)
27AQI (US)
22AQI (US)
35AQI (US)
34AQI (US)
34AQI (US)
27AQI (US)
18AQI (US)
18AQI (US)
30AQI (US)
34AQI (US)
29AQI (US)
24AQI (US)
32AQI (US)
25AQI (US)
31AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
30AQI (US)
23AQI (US)
22AQI (US)
25AQI (US)
19AQI (US)
27AQI (US)
23AQI (US)
24AQI (US)
27AQI (US)
30AQI (US)
29AQI (US)
25AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
18AQI (US)
21AQI (US)
36AQI (US)
34AQI (US)
30AQI (US)
23AQI (US)
35AQI (US)
28AQI (US)
25AQI (US)
25AQI (US)
30AQI (US)
32AQI (US)
45AQI (US)
48AQI (US)
55AQI (US)
57AQI (US)
49AQI (US)
44AQI (US)
40AQI (US)
40AQI (US)
41AQI (US)
42AQI (US)
38AQI (US)
28AQI (US)
19AQI (US)
21AQI (US)
23AQI (US)
23AQI (US)
22AQI (US)
26AQI (US)
24AQI (US)
38AQI (US)
26AQI (US)
16AQI (US)
18AQI (US)
22AQI (US)
35AQI (US)
24AQI (US)
23AQI (US)
21AQI (US)
17AQI (US)
19AQI (US)
21AQI (US)
17AQI (US)
18AQI (US)
19AQI (US)
24AQI (US)
22AQI (US)
20AQI (US)
35AQI (US)
35AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
32AQI (US)
32AQI (US)
28AQI (US)
40AQI (US)
52AQI (US)
32AQI (US)
30AQI (US)
29AQI (US)
28AQI (US)
42AQI (US)
44AQI (US)
36AQI (US)
31AQI (US)
30AQI (US)
32AQI (US)
31AQI (US)
30AQI (US)
31AQI (US)
30AQI (US)
30AQI (US)
25AQI (US)
50AQI (US)
58AQI (US)
57AQI (US)
59AQI (US)
60AQI (US)
55AQI (US)
55AQI (US)
49AQI (US)
54AQI (US)
57AQI (US)
56AQI (US)
52AQI (US)
49AQI (US)
49AQI (US)
50AQI (US)
39AQI (US)
54AQI (US)
55AQI (US)
51AQI (US)
55AQI (US)
56AQI (US)
54AQI (US)
51AQI (US)
50AQI (US)
45AQI (US)
42AQI (US)
50AQI (US)
53AQI (US)
53AQI (US)
50AQI (US)
34AQI (US)
39AQI (US)
34AQI (US)
26AQI (US)
33AQI (US)
26AQI (US)
43AQI (US)
51AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
August51AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202542AQI (US)
Highest AQI (US) recorded in
August49AQI (US)
Lowest AQI (US) recorded in
May31AQI (US)
202438AQI (US)
Highest AQI (US) recorded in
February47AQI (US)
Lowest AQI (US) recorded in
November27AQI (US)
202341AQI (US)
Highest AQI (US) recorded in
September49AQI (US)
Lowest AQI (US) recorded in
October32AQI (US)
202238AQI (US)
Highest AQI (US) recorded in
September51AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202131AQI (US)
Highest AQI (US) recorded in
December41AQI (US)
Lowest AQI (US) recorded in
February17AQI (US)
202030AQI (US)
Highest AQI (US) recorded in
June39AQI (US)
Lowest AQI (US) recorded in
May22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Stilwell Castnet Ncore's annual 2026 AQI (US) (35) shows an average percentage change of -2.9% (improved AQI (US)) compared to previous years: 2020 (30), 2021 (31), 2022 (38), 2023 (41), 2024 (38), 2025 (42).