Cacem, Lisboa, 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
Cacem, Lisboa, Portugal
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 36 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Cacem, Lisboa, Portugal
6 AM2nd Jul 2025
9 PM
5 AM3rd Jul 2025
37AQI
32AQI
40AQI
36AQI
In the last 24 hours,
Cacem's AQI reached its highest point of 40 at 2 AM during the Night, while the lowest point, 32, was recorded at 5 PM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Cacem, Lisboa, Portugal
17°C15/20°C
19°C16/24°C
19°C15/23°C
20°C16/24°C
20°C16/26°C
23°C15/34°C
24°C20/31°C
19°C17/22°C
19°C17/21°C
19°C16/21°C
19°C16/22°C
18°C16/22°C
19°C15/24°C
22°C17/27°C
23°C20/27°C
22°C18/28°C
21°C18/27°C
20°C17/25°C
20°C17/24°C
20°C17/24°C
20°C16/24°C
19°C17/23°C
20°C18/23°C
20°C17/24°C
22°C18/27°C
24°C19/31°C
26°C22/31°C
26°C21/31°C
22°C19/27°C
21°C18/24°C
0°C0/0°C
35AQI
35AQI
39AQI
35AQI
2025 Days Vs Air Quality
Cacem, Lisboa, Portugal
98%
180
2%
3
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 184 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
Cacem, Lisboa, Portugal
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
35AQI
41AQI
43AQI
39AQI
36AQI
34AQI
39AQI
36AQI
34AQI
33AQI
32AQI
38AQI
37AQI
37AQI
46AQI
44AQI
38AQI
40AQI
41AQI
42AQI
38AQI
39AQI
43AQI
40AQI
40AQI
34AQI
33AQI
32AQI
32AQI
30AQI
27AQI
30AQI
33AQI
31AQI
32AQI
37AQI
36AQI
34AQI
34AQI
34AQI
34AQI
33AQI
29AQI
28AQI
29AQI
31AQI
27AQI
31AQI
31AQI
33AQI
34AQI
34AQI
34AQI
36AQI
41AQI
41AQI
47AQI
41AQI
39AQI
34AQI
32AQI
36AQI
35AQI
32AQI
31AQI
32AQI
32AQI
31AQI
33AQI
29AQI
28AQI
27AQI
27AQI
27AQI
27AQI
26AQI
26AQI
27AQI
24AQI
22AQI
23AQI
24AQI
25AQI
26AQI
22AQI
22AQI
23AQI
30AQI
30AQI
25AQI
24AQI
19AQI
19AQI
16AQI
15AQI
15AQI
16AQI
17AQI
19AQI
22AQI
21AQI
19AQI
19AQI
17AQI
18AQI
17AQI
18AQI
17AQI
20AQI
18AQI
19AQI
24AQI
26AQI
29AQI
29AQI
28AQI
26AQI
25AQI
26AQI
28AQI
34AQI
48AQI
44AQI
40AQI
31AQI
23AQI
21AQI
21AQI
22AQI
22AQI
22AQI
28AQI
34AQI
38AQI
39AQI
37AQI
33AQI
27AQI
25AQI
22AQI
22AQI
26AQI
35AQI
35AQI
25AQI
28AQI
31AQI
42AQI
50AQI
48AQI
44AQI
34AQI
33AQI
28AQI
24AQI
21AQI
20AQI
28AQI
46AQI
55AQI
53AQI
47AQI
31AQI
31AQI
31AQI
35AQI
44AQI
53AQI
49AQI
45AQI
35AQI
32AQI
34AQI
37AQI
34AQI
29AQI
26AQI
29AQI
36AQI
41AQI
43AQI
36AQI
37AQI
34AQI
28AQI
21AQI
32AQI
36AQI
40AQI
No. of days
202531AQI
Highest AQI recorded in
July40AQI
Lowest AQI recorded in
April21AQI
202439AQI
Highest AQI recorded in
January48AQI
Lowest AQI recorded in
October32AQI
202337AQI
Highest AQI recorded in
December48AQI
Lowest AQI recorded in
July29AQI
202239AQI
Highest AQI recorded in
March51AQI
Lowest AQI recorded in
August31AQI
202134AQI
Highest AQI recorded in
November43AQI
Lowest AQI recorded in
January25AQI
202027AQI
Highest AQI recorded in
May37AQI
Lowest AQI recorded in
November20AQI
Most & Least Polluted Years Over the Last 6 Years
Cacem's annual 2025 AQI (31) shows an average percentage change of -8.9% (improved AQI) compared to previous years: 2020 (27), 2021 (34), 2022 (39), 2023 (37), 2024 (39).