South Hill, Washington, 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
South Hill, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 1st highest AQI at 55 of Moderate air quality on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
South Hill, Washington, United States
5 AM15th Aug 2026
8 PM
4 AM16th Aug 2026
116AQI
21AQI
71AQI
26AQI
In the last 24 hours,
South Hill's AQI reached its highest point of 116 at 2 PM during the Day, while the lowest point, 21, was recorded at 5 PM during the Day between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
South Hill, Washington, United States
19°C13/26°C
20°C12/28°C
24°C15/33°C
27°C17/38°C
29°C18/39°C
23°C18/30°C
22°C13/31°C
20°C14/25°C
21°C17/27°C
22°C15/31°C
20°C17/25°C
20°C13/29°C
20°C11/29°C
22°C12/32°C
20°C16/25°C
18°C12/24°C
18°C10/25°C
21°C13/31°C
23°C13/34°C
24°C14/35°C
23°C14/34°C
23°C14/32°C
20°C13/29°C
19°C12/27°C
20°C13/29°C
21°C14/30°C
21°C14/30°C
21°C15/30°C
21°C14/30°C
20°C12/30°C
64AQI
45AQI
51AQI
48AQI
2026 Days Vs Air Quality
South Hill, Washington, United States
92%
205
8%
18
0.4%
1
Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% of 228 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
South Hill, Washington, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
76AQI (US)
54AQI (US)
20AQI (US)
14AQI (US)
21AQI (US)
14AQI (US)
14AQI (US)
16AQI (US)
17AQI (US)
57AQI (US)
28AQI (US)
19AQI (US)
18AQI (US)
19AQI (US)
16AQI (US)
24AQI (US)
57AQI (US)
71AQI (US)
66AQI (US)
43AQI (US)
48AQI (US)
47AQI (US)
52AQI (US)
49AQI (US)
45AQI (US)
45AQI (US)
40AQI (US)
45AQI (US)
49AQI (US)
46AQI (US)
42AQI (US)
48AQI (US)
49AQI (US)
46AQI (US)
35AQI (US)
47AQI (US)
38AQI (US)
36AQI (US)
43AQI (US)
40AQI (US)
40AQI (US)
28AQI (US)
22AQI (US)
35AQI (US)
45AQI (US)
30AQI (US)
31AQI (US)
34AQI (US)
36AQI (US)
36AQI (US)
23AQI (US)
31AQI (US)
34AQI (US)
30AQI (US)
32AQI (US)
30AQI (US)
42AQI (US)
25AQI (US)
22AQI (US)
29AQI (US)
45AQI (US)
26AQI (US)
45AQI (US)
39AQI (US)
29AQI (US)
41AQI (US)
40AQI (US)
33AQI (US)
31AQI (US)
37AQI (US)
28AQI (US)
40AQI (US)
27AQI (US)
30AQI (US)
32AQI (US)
31AQI (US)
28AQI (US)
34AQI (US)
28AQI (US)
33AQI (US)
34AQI (US)
31AQI (US)
29AQI (US)
29AQI (US)
20AQI (US)
21AQI (US)
18AQI (US)
21AQI (US)
18AQI (US)
18AQI (US)
26AQI (US)
24AQI (US)
17AQI (US)
23AQI (US)
26AQI (US)
25AQI (US)
18AQI (US)
23AQI (US)
19AQI (US)
31AQI (US)
27AQI (US)
25AQI (US)
21AQI (US)
33AQI (US)
32AQI (US)
28AQI (US)
19AQI (US)
17AQI (US)
18AQI (US)
18AQI (US)
21AQI (US)
19AQI (US)
23AQI (US)
26AQI (US)
18AQI (US)
20AQI (US)
18AQI (US)
21AQI (US)
18AQI (US)
18AQI (US)
20AQI (US)
31AQI (US)
26AQI (US)
21AQI (US)
16AQI (US)
22AQI (US)
22AQI (US)
21AQI (US)
21AQI (US)
27AQI (US)
20AQI (US)
40AQI (US)
52AQI (US)
56AQI (US)
48AQI (US)
45AQI (US)
46AQI (US)
37AQI (US)
40AQI (US)
49AQI (US)
39AQI (US)
41AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
27AQI (US)
28AQI (US)
28AQI (US)
31AQI (US)
31AQI (US)
28AQI (US)
22AQI (US)
26AQI (US)
25AQI (US)
25AQI (US)
25AQI (US)
25AQI (US)
27AQI (US)
28AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
23AQI (US)
27AQI (US)
26AQI (US)
23AQI (US)
25AQI (US)
22AQI (US)
26AQI (US)
24AQI (US)
24AQI (US)
17AQI (US)
27AQI (US)
30AQI (US)
28AQI (US)
24AQI (US)
25AQI (US)
25AQI (US)
22AQI (US)
28AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
28AQI (US)
27AQI (US)
29AQI (US)
32AQI (US)
28AQI (US)
26AQI (US)
30AQI (US)
29AQI (US)
22AQI (US)
21AQI (US)
37AQI (US)
40AQI (US)
38AQI (US)
39AQI (US)
49AQI (US)
57AQI (US)
47AQI (US)
46AQI (US)
48AQI (US)
51AQI (US)
46AQI (US)
47AQI (US)
37AQI (US)
43AQI (US)
46AQI (US)
42AQI (US)
30AQI (US)
56AQI (US)
73AQI (US)
95AQI (US)
102AQI (US)
63AQI (US)
48AQI (US)
51AQI (US)
47AQI (US)
46AQI (US)
46AQI (US)
51AQI (US)
45AQI (US)
55AQI (US)
38AQI (US)
35AQI (US)
30AQI (US)
23AQI (US)
31AQI (US)
25AQI (US)
35AQI (US)
57AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
August57AQI (US)
Lowest AQI (US) recorded in
April23AQI (US)
202528AQI (US)
Highest AQI (US) recorded in
January42AQI (US)
Lowest AQI (US) recorded in
May17AQI (US)
202426AQI (US)
Highest AQI (US) recorded in
February63AQI (US)
Lowest AQI (US) recorded in
April4AQI (US)
202335AQI (US)
Highest AQI (US) recorded in
November67AQI (US)
Lowest AQI (US) recorded in
December32AQI (US)
202027AQI (US)
Highest AQI (US) recorded in
September69AQI (US)
Lowest AQI (US) recorded in
June10AQI (US)
Most & Least Polluted Years Over the Last 5 Years
South Hill's annual 2026 AQI (US) (33) shows an average percentage change of 15.3% (worsened AQI (US)) compared to previous years: 2020 (27), 2023 (35), 2024 (26), 2025 (28).