Upland, 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
Upland, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 42 of Good air quality, showing improvement over 2025 and 2024 on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Upland, California, United States
6 AM15th Aug 2026
7 PM
5 AM16th Aug 2026
52AQI
20AQI
58AQI
34AQI
In the last 24 hours,
Upland's AQI reached its highest point of 58 at 9 PM during the Night, while the lowest point, 20, was recorded at 8 AM during the Day between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Upland, California, United States
27°C19/37°C
27°C19/37°C
27°C20/35°C
27°C20/36°C
27°C20/37°C
30°C21/42°C
30°C22/40°C
28°C20/41°C
29°C21/41°C
28°C20/40°C
27°C19/38°C
26°C17/37°C
26°C17/40°C
28°C18/42°C
29°C20/41°C
29°C21/40°C
27°C19/39°C
26°C18/36°C
25°C18/35°C
27°C18/39°C
28°C20/39°C
29°C21/41°C
29°C21/42°C
28°C21/38°C
27°C20/38°C
26°C19/35°C
24°C18/34°C
24°C17/34°C
23°C16/31°C
26°C19/33°C
56AQI
50AQI
51AQI
49AQI
2026 Days Vs Air Quality
Upland, California, United States
83%
187
17%
37
Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2026, 83% of 228 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
Upland, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI (US)
33AQI (US)
19AQI (US)
23AQI (US)
22AQI (US)
27AQI (US)
29AQI (US)
29AQI (US)
25AQI (US)
23AQI (US)
18AQI (US)
20AQI (US)
31AQI (US)
24AQI (US)
28AQI (US)
29AQI (US)
22AQI (US)
25AQI (US)
44AQI (US)
31AQI (US)
56AQI (US)
61AQI (US)
52AQI (US)
37AQI (US)
42AQI (US)
42AQI (US)
38AQI (US)
45AQI (US)
50AQI (US)
56AQI (US)
38AQI (US)
53AQI (US)
51AQI (US)
50AQI (US)
44AQI (US)
50AQI (US)
44AQI (US)
42AQI (US)
34AQI (US)
48AQI (US)
43AQI (US)
31AQI (US)
27AQI (US)
33AQI (US)
36AQI (US)
40AQI (US)
40AQI (US)
42AQI (US)
31AQI (US)
30AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
36AQI (US)
41AQI (US)
42AQI (US)
39AQI (US)
36AQI (US)
31AQI (US)
35AQI (US)
49AQI (US)
34AQI (US)
41AQI (US)
40AQI (US)
24AQI (US)
32AQI (US)
30AQI (US)
30AQI (US)
32AQI (US)
41AQI (US)
43AQI (US)
40AQI (US)
32AQI (US)
30AQI (US)
33AQI (US)
31AQI (US)
40AQI (US)
46AQI (US)
54AQI (US)
38AQI (US)
33AQI (US)
43AQI (US)
42AQI (US)
43AQI (US)
43AQI (US)
45AQI (US)
32AQI (US)
30AQI (US)
38AQI (US)
35AQI (US)
21AQI (US)
17AQI (US)
33AQI (US)
27AQI (US)
29AQI (US)
39AQI (US)
44AQI (US)
46AQI (US)
40AQI (US)
33AQI (US)
25AQI (US)
22AQI (US)
19AQI (US)
23AQI (US)
35AQI (US)
27AQI (US)
36AQI (US)
36AQI (US)
32AQI (US)
23AQI (US)
27AQI (US)
27AQI (US)
28AQI (US)
23AQI (US)
18AQI (US)
26AQI (US)
32AQI (US)
31AQI (US)
38AQI (US)
43AQI (US)
27AQI (US)
32AQI (US)
31AQI (US)
31AQI (US)
38AQI (US)
44AQI (US)
35AQI (US)
44AQI (US)
36AQI (US)
36AQI (US)
34AQI (US)
51AQI (US)
49AQI (US)
59AQI (US)
62AQI (US)
57AQI (US)
53AQI (US)
50AQI (US)
54AQI (US)
50AQI (US)
47AQI (US)
43AQI (US)
28AQI (US)
22AQI (US)
18AQI (US)
18AQI (US)
20AQI (US)
26AQI (US)
36AQI (US)
45AQI (US)
47AQI (US)
46AQI (US)
41AQI (US)
32AQI (US)
34AQI (US)
38AQI (US)
40AQI (US)
42AQI (US)
37AQI (US)
33AQI (US)
26AQI (US)
27AQI (US)
35AQI (US)
35AQI (US)
40AQI (US)
29AQI (US)
32AQI (US)
33AQI (US)
40AQI (US)
36AQI (US)
41AQI (US)
42AQI (US)
35AQI (US)
37AQI (US)
27AQI (US)
19AQI (US)
26AQI (US)
28AQI (US)
25AQI (US)
41AQI (US)
34AQI (US)
30AQI (US)
69AQI (US)
33AQI (US)
62AQI (US)
41AQI (US)
49AQI (US)
44AQI (US)
39AQI (US)
34AQI (US)
45AQI (US)
46AQI (US)
45AQI (US)
46AQI (US)
55AQI (US)
52AQI (US)
52AQI (US)
50AQI (US)
47AQI (US)
44AQI (US)
51AQI (US)
56AQI (US)
55AQI (US)
55AQI (US)
55AQI (US)
56AQI (US)
56AQI (US)
56AQI (US)
56AQI (US)
58AQI (US)
55AQI (US)
54AQI (US)
56AQI (US)
57AQI (US)
58AQI (US)
51AQI (US)
53AQI (US)
51AQI (US)
54AQI (US)
49AQI (US)
46AQI (US)
41AQI (US)
38AQI (US)
42AQI (US)
34AQI (US)
39AQI (US)
37AQI (US)
29AQI (US)
39AQI (US)
35AQI (US)
48AQI (US)
51AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
August51AQI (US)
Lowest AQI (US) recorded in
April29AQI (US)
202546AQI (US)
Highest AQI (US) recorded in
October56AQI (US)
Lowest AQI (US) recorded in
March33AQI (US)
202450AQI (US)
Highest AQI (US) recorded in
September75AQI (US)
Lowest AQI (US) recorded in
April21AQI (US)
202336AQI (US)
Highest AQI (US) recorded in
April54AQI (US)
Lowest AQI (US) recorded in
November26AQI (US)
202242AQI (US)
Highest AQI (US) recorded in
October53AQI (US)
Lowest AQI (US) recorded in
February30AQI (US)
202145AQI (US)
Highest AQI (US) recorded in
November61AQI (US)
Lowest AQI (US) recorded in
March28AQI (US)
202045AQI (US)
Highest AQI (US) recorded in
September72AQI (US)
Lowest AQI (US) recorded in
May17AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Upland's annual 2026 AQI (US) (38) shows an average percentage change of -12.7% (improved AQI (US)) compared to previous years: 2020 (45), 2021 (45), 2022 (42), 2023 (36), 2024 (50), 2025 (46).