Chaves, Vila Real, Portugal 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
Chaves, Vila Real, Portugal
AQI Trends: Highest and Lowest
Same Day Analysis (31st July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 22 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Chaves, Vila Real, Portugal
98%
208
2%
4
Total number of days with different AQI categories in last 213 days in 2025 (152 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 213 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
Chaves, Vila Real, Portugal
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI
30AQI
43AQI
39AQI
32AQI
28AQI
24AQI
27AQI
27AQI
21AQI
22AQI
22AQI
33AQI
67AQI
30AQI
32AQI
29AQI
30AQI
34AQI
24AQI
20AQI
26AQI
22AQI
26AQI
28AQI
28AQI
31AQI
29AQI
29AQI
29AQI
24AQI
21AQI
25AQI
26AQI
24AQI
23AQI
28AQI
27AQI
24AQI
22AQI
23AQI
29AQI
26AQI
24AQI
25AQI
25AQI
28AQI
27AQI
29AQI
36AQI
33AQI
30AQI
26AQI
25AQI
27AQI
30AQI
29AQI
30AQI
26AQI
28AQI
28AQI
28AQI
30AQI
27AQI
24AQI
27AQI
31AQI
30AQI
30AQI
28AQI
27AQI
21AQI
19AQI
19AQI
19AQI
17AQI
20AQI
26AQI
22AQI
17AQI
16AQI
16AQI
17AQI
21AQI
24AQI
25AQI
26AQI
21AQI
20AQI
23AQI
24AQI
36AQI
21AQI
21AQI
16AQI
18AQI
17AQI
22AQI
23AQI
24AQI
30AQI
21AQI
23AQI
16AQI
14AQI
13AQI
19AQI
15AQI
14AQI
13AQI
15AQI
16AQI
16AQI
16AQI
22AQI
15AQI
13AQI
15AQI
16AQI
18AQI
17AQI
20AQI
17AQI
19AQI
20AQI
20AQI
18AQI
19AQI
21AQI
16AQI
23AQI
20AQI
16AQI
19AQI
17AQI
19AQI
20AQI
22AQI
17AQI
20AQI
21AQI
19AQI
20AQI
23AQI
23AQI
21AQI
23AQI
21AQI
28AQI
37AQI
44AQI
27AQI
18AQI
21AQI
21AQI
19AQI
16AQI
19AQI
39AQI
48AQI
53AQI
48AQI
37AQI
26AQI
31AQI
27AQI
29AQI
35AQI
42AQI
46AQI
43AQI
51AQI
53AQI
37AQI
39AQI
35AQI
26AQI
23AQI
24AQI
33AQI
38AQI
42AQI
36AQI
27AQI
32AQI
31AQI
28AQI
20AQI
19AQI
21AQI
29AQI
28AQI
26AQI
25AQI
22AQI
34AQI
27AQI
37AQI
32AQI
23AQI
22AQI
20AQI
22AQI
22AQI
23AQI
22AQI
26AQI
30AQI
21AQI
19AQI
19AQI
22AQI
30AQI
27AQI
23AQI
19AQI
21AQI
33AQI
26AQI
No. of days
202526AQI
Highest AQI recorded in
June33AQI
Lowest AQI recorded in
April19AQI
202428AQI
Highest AQI recorded in
February34AQI
Lowest AQI recorded in
October22AQI
202327AQI
Highest AQI recorded in
February35AQI
Lowest AQI recorded in
July21AQI
202233AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
November24AQI
202131AQI
Highest AQI recorded in
September42AQI
Lowest AQI recorded in
December22AQI
202030AQI
Highest AQI recorded in
March42AQI
Lowest AQI recorded in
December23AQI
Most & Least Polluted Years Over the Last 6 Years
Chaves's annual 2025 AQI (26) shows an average percentage change of -13.8% (improved AQI) compared to previous years: 2020 (30), 2021 (31), 2022 (33), 2023 (27), 2024 (28).
