Healdsburg, 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
Healdsburg, California, 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 48 of Good air quality on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Healdsburg, California, United States
6 AM15th Aug 2026
8 PM
5 AM16th Aug 2026
60AQI
42AQI
65AQI
42AQI
In the last 24 hours,
Healdsburg's AQI reached its highest point of 65 at 9 PM during the Night, while the lowest point, 42, was recorded at 3 AM during the Night between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Healdsburg, California, United States
20°C12/32°C
20°C11/33°C
21°C14/30°C
25°C16/38°C
21°C17/26°C
23°C12/36°C
24°C11/38°C
25°C13/38°C
24°C12/38°C
23°C10/38°C
25°C12/39°C
25°C13/39°C
25°C14/39°C
24°C11/39°C
26°C12/41°C
28°C14/42°C
26°C14/40°C
22°C11/36°C
20°C13/33°C
21°C12/35°C
22°C13/37°C
22°C12/38°C
23°C12/41°C
20°C10/34°C
19°C11/33°C
19°C12/31°C
18°C13/26°C
18°C13/28°C
19°C12/29°C
20°C11/31°C
52AQI
45AQI
52AQI
46AQI
2026 Days Vs Air Quality
Healdsburg, California, United States
92%
207
8%
17
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
Healdsburg, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
13AQI (US)
15AQI (US)
16AQI (US)
19AQI (US)
18AQI (US)
18AQI (US)
21AQI (US)
24AQI (US)
41AQI (US)
41AQI (US)
45AQI (US)
51AQI (US)
51AQI (US)
66AQI (US)
48AQI (US)
53AQI (US)
55AQI (US)
43AQI (US)
42AQI (US)
52AQI (US)
49AQI (US)
51AQI (US)
48AQI (US)
45AQI (US)
47AQI (US)
43AQI (US)
48AQI (US)
55AQI (US)
51AQI (US)
37AQI (US)
40AQI (US)
48AQI (US)
49AQI (US)
48AQI (US)
47AQI (US)
43AQI (US)
35AQI (US)
47AQI (US)
46AQI (US)
35AQI (US)
37AQI (US)
46AQI (US)
50AQI (US)
40AQI (US)
35AQI (US)
45AQI (US)
50AQI (US)
43AQI (US)
44AQI (US)
42AQI (US)
31AQI (US)
32AQI (US)
36AQI (US)
29AQI (US)
43AQI (US)
32AQI (US)
27AQI (US)
39AQI (US)
33AQI (US)
46AQI (US)
34AQI (US)
36AQI (US)
33AQI (US)
28AQI (US)
31AQI (US)
24AQI (US)
16AQI (US)
24AQI (US)
23AQI (US)
19AQI (US)
24AQI (US)
19AQI (US)
23AQI (US)
26AQI (US)
22AQI (US)
19AQI (US)
26AQI (US)
29AQI (US)
24AQI (US)
18AQI (US)
21AQI (US)
28AQI (US)
23AQI (US)
28AQI (US)
25AQI (US)
29AQI (US)
19AQI (US)
27AQI (US)
23AQI (US)
30AQI (US)
23AQI (US)
23AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
25AQI (US)
32AQI (US)
23AQI (US)
32AQI (US)
35AQI (US)
30AQI (US)
35AQI (US)
27AQI (US)
19AQI (US)
20AQI (US)
21AQI (US)
22AQI (US)
16AQI (US)
28AQI (US)
24AQI (US)
17AQI (US)
18AQI (US)
16AQI (US)
16AQI (US)
17AQI (US)
18AQI (US)
21AQI (US)
33AQI (US)
26AQI (US)
20AQI (US)
23AQI (US)
30AQI (US)
21AQI (US)
20AQI (US)
24AQI (US)
26AQI (US)
30AQI (US)
41AQI (US)
33AQI (US)
31AQI (US)
38AQI (US)
51AQI (US)
59AQI (US)
52AQI (US)
48AQI (US)
49AQI (US)
42AQI (US)
53AQI (US)
48AQI (US)
42AQI (US)
44AQI (US)
19AQI (US)
18AQI (US)
16AQI (US)
12AQI (US)
15AQI (US)
16AQI (US)
15AQI (US)
19AQI (US)
22AQI (US)
15AQI (US)
18AQI (US)
19AQI (US)
19AQI (US)
22AQI (US)
18AQI (US)
18AQI (US)
19AQI (US)
16AQI (US)
20AQI (US)
18AQI (US)
31AQI (US)
25AQI (US)
23AQI (US)
27AQI (US)
17AQI (US)
17AQI (US)
13AQI (US)
27AQI (US)
26AQI (US)
23AQI (US)
24AQI (US)
25AQI (US)
21AQI (US)
18AQI (US)
16AQI (US)
20AQI (US)
31AQI (US)
30AQI (US)
30AQI (US)
21AQI (US)
21AQI (US)
17AQI (US)
22AQI (US)
24AQI (US)
26AQI (US)
33AQI (US)
23AQI (US)
18AQI (US)
24AQI (US)
25AQI (US)
23AQI (US)
26AQI (US)
45AQI (US)
49AQI (US)
45AQI (US)
49AQI (US)
44AQI (US)
42AQI (US)
38AQI (US)
52AQI (US)
47AQI (US)
46AQI (US)
48AQI (US)
46AQI (US)
46AQI (US)
52AQI (US)
89AQI (US)
47AQI (US)
49AQI (US)
57AQI (US)
50AQI (US)
47AQI (US)
45AQI (US)
48AQI (US)
47AQI (US)
46AQI (US)
48AQI (US)
45AQI (US)
48AQI (US)
49AQI (US)
47AQI (US)
48AQI (US)
40AQI (US)
41AQI (US)
26AQI (US)
24AQI (US)
33AQI (US)
20AQI (US)
37AQI (US)
48AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
August48AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
202529AQI (US)
Highest AQI (US) recorded in
December42AQI (US)
Lowest AQI (US) recorded in
July21AQI (US)
202431AQI (US)
Highest AQI (US) recorded in
January48AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
November49AQI (US)
Lowest AQI (US) recorded in
December36AQI (US)
202265AQI (US)
Highest AQI (US) recorded in
April151AQI (US)
Lowest AQI (US) recorded in
October34AQI (US)
202130AQI (US)
Highest AQI (US) recorded in
September49AQI (US)
Lowest AQI (US) recorded in
November20AQI (US)
202085AQI (US)
Highest AQI (US) recorded in
October156AQI (US)
Lowest AQI (US) recorded in
November46AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Healdsburg's annual 2026 AQI (US) (32) shows an average percentage change of -17.7% (improved AQI (US)) compared to previous years: 2020 (85), 2021 (30), 2022 (65), 2023 (37), 2024 (31), 2025 (29).