UPRA, Arecibo, Puerto Rico, Puerto Rico 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
UPRA, Arecibo, Puerto Rico, Puerto Rico
AQI Trends: Highest and Lowest
Same Day Analysis (12th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 46 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Aug - 13th Aug 2025
UPRA, Arecibo, Puerto Rico, Puerto Rico
6 AM12th Aug 2025
7 PM
5 AM13th Aug 2025
53AQI
44AQI
49AQI
37AQI
In the last 24 hours,
UPRA's AQI reached its highest point of 53 at 1 PM during the Day, while the lowest point, 37, was recorded at 12 AM during the Night between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
UPRA, Arecibo, Puerto Rico, Puerto Rico
26°C23/31°C
27°C23/31°C
27°C25/32°C
28°C25/31°C
28°C26/31°C
27°C24/32°C
27°C23/32°C
27°C24/32°C
28°C25/33°C
28°C26/31°C
28°C25/31°C
27°C24/31°C
28°C23/31°C
28°C25/32°C
28°C24/35°C
28°C24/33°C
27°C23/32°C
28°C24/32°C
28°C25/32°C
27°C25/29°C
28°C25/33°C
28°C24/33°C
28°C24/32°C
28°C25/32°C
28°C24/32°C
28°C25/34°C
27°C24/31°C
27°C23/32°C
28°C24/34°C
28°C25/31°C
--°C/°C
44AQI
44AQI
42AQI
42AQI
2025 Days Vs Air Quality
UPRA, Arecibo, Puerto Rico, Puerto Rico
91%
204
8%
19
0.4%
1
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 225 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
UPRA, Arecibo, Puerto Rico, Puerto Rico
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
52AQI
49AQI
46AQI
35AQI
37AQI
35AQI
31AQI
32AQI
32AQI
32AQI
29AQI
30AQI
32AQI
30AQI
30AQI
29AQI
40AQI
47AQI
40AQI
32AQI
36AQI
30AQI
30AQI
30AQI
32AQI
34AQI
38AQI
35AQI
32AQI
29AQI
31AQI
29AQI
30AQI
27AQI
29AQI
31AQI
30AQI
30AQI
33AQI
33AQI
35AQI
36AQI
35AQI
30AQI
31AQI
21AQI
37AQI
38AQI
43AQI
36AQI
36AQI
33AQI
32AQI
33AQI
32AQI
31AQI
36AQI
35AQI
37AQI
44AQI
41AQI
42AQI
36AQI
33AQI
31AQI
32AQI
33AQI
31AQI
34AQI
43AQI
42AQI
40AQI
42AQI
41AQI
42AQI
51AQI
45AQI
42AQI
43AQI
37AQI
42AQI
43AQI
43AQI
39AQI
35AQI
34AQI
40AQI
41AQI
38AQI
37AQI
37AQI
41AQI
42AQI
36AQI
34AQI
29AQI
25AQI
29AQI
29AQI
44AQI
44AQI
57AQI
54AQI
41AQI
38AQI
35AQI
38AQI
51AQI
49AQI
34AQI
36AQI
25AQI
24AQI
27AQI
23AQI
28AQI
33AQI
29AQI
27AQI
26AQI
25AQI
26AQI
26AQI
26AQI
29AQI
32AQI
29AQI
28AQI
25AQI
22AQI
20AQI
22AQI
22AQI
21AQI
23AQI
28AQI
27AQI
23AQI
25AQI
25AQI
26AQI
24AQI
24AQI
27AQI
31AQI
35AQI
31AQI
27AQI
25AQI
28AQI
36AQI
42AQI
48AQI
42AQI
32AQI
27AQI
25AQI
24AQI
30AQI
37AQI
44AQI
47AQI
37AQI
34AQI
31AQI
30AQI
32AQI
34AQI
38AQI
42AQI
37AQI
33AQI
34AQI
38AQI
42AQI
42AQI
45AQI
46AQI
45AQI
48AQI
50AQI
51AQI
51AQI
63AQI
72AQI
80AQI
89AQI
100AQI
103AQI
83AQI
69AQI
65AQI
58AQI
57AQI
46AQI
34AQI
42AQI
44AQI
41AQI
38AQI
35AQI
38AQI
36AQI
33AQI
43AQI
45AQI
44AQI
45AQI
47AQI
42AQI
44AQI
40AQI
46AQI
52AQI
44AQI
49AQI
53AQI
50AQI
46AQI
44AQI
35AQI
39AQI
45AQI
46AQI
35AQI
33AQI
39AQI
36AQI
26AQI
38AQI
54AQI
46AQI
No. of days
202538AQI
Highest AQI recorded in
July54AQI
Lowest AQI recorded in
May26AQI
202433AQI
Highest AQI recorded in
May45AQI
Lowest AQI recorded in
January21AQI
20233AQI
Highest AQI recorded in
November12AQI
Lowest AQI recorded in
January0AQI
20220AQI
Highest AQI recorded in
December1AQI
Lowest AQI recorded in
October0AQI
Most & Least Polluted Years Over the Last 4 Years
UPRA's annual 2025 AQI (38) shows an average percentage change of 3575.9% (worsened AQI) compared to previous years: 2022 (0), 2023 (3), 2024 (33).