North Gulling Street, Portola, California, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
North Gulling Street, Portola, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (12th July):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 21 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 12th Jul - 13th Jul 2026
North Gulling Street, Portola, California, United States
5 AM12th Jul 2026
8 PM
4 AM13th Jul 2026
30AQI
13AQI
43AQI
13AQI
In the last 24 hours,
North Gulling Street's AQI reached its highest point of 43 at 4 AM during the Night, while the lowest point, 13, was recorded at 9 PM during the Night between 12th Jul and 13th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
North Gulling Street, Portola, California, United States
22°C11/32°C
25°C16/33°C
24°C15/33°C
22°C12/33°C
21°C12/33°C
18°C8/27°C
16°C6/26°C
18°C7/29°C
20°C9/31°C
22°C11/30°C
20°C9/28°C
18°C8/28°C
15°C8/21°C
11°C3/19°C
11°C0/20°C
13°C2/24°C
15°C5/24°C
15°C4/25°C
17°C6/28°C
19°C7/30°C
22°C13/33°C
20°C10/29°C
19°C9/29°C
21°C8/31°C
21°C13/29°C
21°C12/32°C
19°C9/30°C
20°C9/32°C
23°C14/29°C
24°C16/30°C
22AQI
14AQI
17AQI
16AQI
2026 Days Vs Air Quality
North Gulling Street, Portola, California, United States
97%
184
3%
6
Total number of days with different AQI categories in last 194 days in 2026 (171 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 194 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
North Gulling Street, Portola, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
40AQI (US)
36AQI (US)
32AQI (US)
42AQI (US)
29AQI (US)
36AQI (US)
32AQI (US)
29AQI (US)
36AQI (US)
35AQI (US)
37AQI (US)
41AQI (US)
54AQI (US)
39AQI (US)
37AQI (US)
50AQI (US)
53AQI (US)
59AQI (US)
64AQI (US)
59AQI (US)
60AQI (US)
44AQI (US)
38AQI (US)
45AQI (US)
26AQI (US)
31AQI (US)
33AQI (US)
25AQI (US)
38AQI (US)
42AQI (US)
31AQI (US)
32AQI (US)
33AQI (US)
32AQI (US)
31AQI (US)
30AQI (US)
34AQI (US)
21AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
18AQI (US)
23AQI (US)
24AQI (US)
27AQI (US)
24AQI (US)
29AQI (US)
41AQI (US)
32AQI (US)
31AQI (US)
29AQI (US)
28AQI (US)
30AQI (US)
32AQI (US)
22AQI (US)
25AQI (US)
23AQI (US)
23AQI (US)
18AQI (US)
23AQI (US)
30AQI (US)
22AQI (US)
32AQI (US)
30AQI (US)
16AQI (US)
27AQI (US)
21AQI (US)
21AQI (US)
20AQI (US)
21AQI (US)
28AQI (US)
23AQI (US)
17AQI (US)
17AQI (US)
23AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
27AQI (US)
20AQI (US)
17AQI (US)
23AQI (US)
19AQI (US)
21AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
13AQI (US)
20AQI (US)
19AQI (US)
26AQI (US)
19AQI (US)
16AQI (US)
21AQI (US)
19AQI (US)
22AQI (US)
21AQI (US)
26AQI (US)
18AQI (US)
16AQI (US)
24AQI (US)
27AQI (US)
21AQI (US)
18AQI (US)
20AQI (US)
18AQI (US)
16AQI (US)
20AQI (US)
25AQI (US)
18AQI (US)
17AQI (US)
16AQI (US)
13AQI (US)
18AQI (US)
17AQI (US)
16AQI (US)
18AQI (US)
19AQI (US)
18AQI (US)
18AQI (US)
17AQI (US)
20AQI (US)
24AQI (US)
19AQI (US)
16AQI (US)
20AQI (US)
18AQI (US)
17AQI (US)
24AQI (US)
17AQI (US)
16AQI (US)
17AQI (US)
17AQI (US)
18AQI (US)
25AQI (US)
22AQI (US)
21AQI (US)
21AQI (US)
21AQI (US)
20AQI (US)
19AQI (US)
17AQI (US)
17AQI (US)
28AQI (US)
24AQI (US)
24AQI (US)
16AQI (US)
14AQI (US)
16AQI (US)
20AQI (US)
18AQI (US)
16AQI (US)
22AQI (US)
16AQI (US)
11AQI (US)
15AQI (US)
20AQI (US)
12AQI (US)
15AQI (US)
17AQI (US)
14AQI (US)
15AQI (US)
19AQI (US)
19AQI (US)
21AQI (US)
24AQI (US)
20AQI (US)
12AQI (US)
12AQI (US)
15AQI (US)
18AQI (US)
16AQI (US)
16AQI (US)
14AQI (US)
22AQI (US)
27AQI (US)
14AQI (US)
11AQI (US)
13AQI (US)
16AQI (US)
17AQI (US)
18AQI (US)
16AQI (US)
14AQI (US)
13AQI (US)
14AQI (US)
15AQI (US)
15AQI (US)
17AQI (US)
21AQI (US)
40AQI (US)
28AQI (US)
22AQI (US)
19AQI (US)
20AQI (US)
17AQI (US)
16AQI (US)
No. of days
202624AQI (US)
Highest AQI (US) recorded in
January40AQI (US)
Lowest AQI (US) recorded in
July16AQI (US)
202534AQI (US)
Highest AQI (US) recorded in
October42AQI (US)
Lowest AQI (US) recorded in
May25AQI (US)
Most & Least Polluted Years Over the Last 2 Years
North Gulling Street's annual 2026 AQI (US) (24) shows an average percentage change of -29.4% (improved AQI (US)) compared to previous years: 2025 (34).