Ukiah Library, Ukiah, California, 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
Ukiah Library, Ukiah, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 45 of Good air quality on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Ukiah Library, Ukiah, California, United States
6 AM15th Aug 2026
8 PM
5 AM16th Aug 2026
50AQI
42AQI
54AQI
38AQI
In the last 24 hours,
Ukiah Library's AQI reached its highest point of 54 at 12 AM during the Night, while the lowest point, 38, was recorded at 5 AM during the Night between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Ukiah Library, Ukiah, California, United States
25°C13/37°C
26°C14/39°C
26°C18/36°C
29°C19/40°C
23°C17/30°C
23°C14/32°C
23°C14/34°C
23°C15/32°C
23°C14/34°C
23°C15/34°C
25°C17/34°C
25°C18/35°C
25°C16/36°C
26°C15/38°C
27°C17/38°C
28°C18/39°C
30°C18/43°C
30°C19/42°C
26°C15/39°C
26°C14/41°C
29°C17/42°C
30°C20/43°C
30°C20/42°C
28°C18/40°C
25°C15/38°C
24°C15/37°C
22°C14/31°C
20°C12/31°C
20°C11/31°C
9°C9/11°C
49AQI
45AQI
49AQI
42AQI
2026 Days Vs Air Quality
Ukiah Library, Ukiah, California, United States
98%
219
2%
5
Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2026, 98% 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
Ukiah Library, Ukiah, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI (US)
15AQI (US)
13AQI (US)
15AQI (US)
20AQI (US)
24AQI (US)
18AQI (US)
24AQI (US)
36AQI (US)
45AQI (US)
37AQI (US)
48AQI (US)
47AQI (US)
43AQI (US)
39AQI (US)
44AQI (US)
38AQI (US)
45AQI (US)
42AQI (US)
47AQI (US)
45AQI (US)
40AQI (US)
36AQI (US)
39AQI (US)
40AQI (US)
33AQI (US)
25AQI (US)
34AQI (US)
46AQI (US)
42AQI (US)
25AQI (US)
35AQI (US)
41AQI (US)
41AQI (US)
32AQI (US)
39AQI (US)
35AQI (US)
32AQI (US)
30AQI (US)
45AQI (US)
36AQI (US)
33AQI (US)
39AQI (US)
35AQI (US)
25AQI (US)
29AQI (US)
44AQI (US)
48AQI (US)
42AQI (US)
42AQI (US)
30AQI (US)
26AQI (US)
25AQI (US)
32AQI (US)
33AQI (US)
41AQI (US)
30AQI (US)
27AQI (US)
38AQI (US)
30AQI (US)
45AQI (US)
30AQI (US)
35AQI (US)
29AQI (US)
23AQI (US)
34AQI (US)
27AQI (US)
26AQI (US)
30AQI (US)
31AQI (US)
25AQI (US)
32AQI (US)
21AQI (US)
19AQI (US)
25AQI (US)
25AQI (US)
22AQI (US)
26AQI (US)
36AQI (US)
26AQI (US)
23AQI (US)
32AQI (US)
28AQI (US)
25AQI (US)
29AQI (US)
17AQI (US)
19AQI (US)
16AQI (US)
26AQI (US)
21AQI (US)
23AQI (US)
19AQI (US)
21AQI (US)
27AQI (US)
22AQI (US)
26AQI (US)
34AQI (US)
40AQI (US)
22AQI (US)
28AQI (US)
31AQI (US)
26AQI (US)
30AQI (US)
23AQI (US)
22AQI (US)
21AQI (US)
21AQI (US)
21AQI (US)
16AQI (US)
24AQI (US)
21AQI (US)
16AQI (US)
15AQI (US)
22AQI (US)
16AQI (US)
20AQI (US)
20AQI (US)
21AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
32AQI (US)
32AQI (US)
21AQI (US)
23AQI (US)
35AQI (US)
31AQI (US)
29AQI (US)
38AQI (US)
27AQI (US)
25AQI (US)
41AQI (US)
50AQI (US)
56AQI (US)
49AQI (US)
47AQI (US)
49AQI (US)
41AQI (US)
53AQI (US)
49AQI (US)
43AQI (US)
43AQI (US)
18AQI (US)
16AQI (US)
16AQI (US)
11AQI (US)
13AQI (US)
17AQI (US)
17AQI (US)
17AQI (US)
19AQI (US)
14AQI (US)
16AQI (US)
15AQI (US)
12AQI (US)
17AQI (US)
18AQI (US)
15AQI (US)
17AQI (US)
15AQI (US)
17AQI (US)
15AQI (US)
23AQI (US)
23AQI (US)
21AQI (US)
24AQI (US)
15AQI (US)
13AQI (US)
11AQI (US)
18AQI (US)
21AQI (US)
19AQI (US)
19AQI (US)
21AQI (US)
21AQI (US)
17AQI (US)
14AQI (US)
16AQI (US)
22AQI (US)
25AQI (US)
24AQI (US)
17AQI (US)
19AQI (US)
15AQI (US)
19AQI (US)
25AQI (US)
27AQI (US)
28AQI (US)
18AQI (US)
15AQI (US)
20AQI (US)
23AQI (US)
20AQI (US)
19AQI (US)
43AQI (US)
50AQI (US)
43AQI (US)
43AQI (US)
45AQI (US)
35AQI (US)
32AQI (US)
46AQI (US)
41AQI (US)
42AQI (US)
44AQI (US)
44AQI (US)
42AQI (US)
52AQI (US)
76AQI (US)
47AQI (US)
48AQI (US)
54AQI (US)
49AQI (US)
47AQI (US)
45AQI (US)
44AQI (US)
45AQI (US)
47AQI (US)
47AQI (US)
45AQI (US)
50AQI (US)
46AQI (US)
44AQI (US)
45AQI (US)
35AQI (US)
35AQI (US)
27AQI (US)
23AQI (US)
33AQI (US)
17AQI (US)
33AQI (US)
47AQI (US)
No. of days
202630AQI (US)
Highest AQI (US) recorded in
August47AQI (US)
Lowest AQI (US) recorded in
June17AQI (US)
202533AQI (US)
Highest AQI (US) recorded in
December49AQI (US)
Lowest AQI (US) recorded in
May22AQI (US)
202430AQI (US)
Highest AQI (US) recorded in
December47AQI (US)
Lowest AQI (US) recorded in
May23AQI (US)
202330AQI (US)
Highest AQI (US) recorded in
August43AQI (US)
Lowest AQI (US) recorded in
April19AQI (US)
202235AQI (US)
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
May24AQI (US)
202134AQI (US)
Highest AQI (US) recorded in
August66AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202037AQI (US)
Highest AQI (US) recorded in
September76AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Ukiah Library's annual 2026 AQI (US) (30) shows an average percentage change of -9.01% (improved AQI (US)) compared to previous years: 2020 (37), 2021 (34), 2022 (35), 2023 (30), 2024 (30), 2025 (33).