Castro Marim, Faro, Portugal Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Castro Marim, Faro, Portugal
AQI Trends: Highest and Lowest
Same Day Analysis (7th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 34 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Mar - 7th Mar 2026
Castro Marim, Faro, Portugal
7 AM6th Mar 2026
6 PM
6 AM7th Mar 2026
30AQI
20AQI
42AQI
14AQI
In the last 24 hours,
Castro Marim's AQI reached its highest point of 42 at 1 AM during the Night, while the lowest point, 14, was recorded at 11 PM during the Night between 6th Mar and 7th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Castro Marim, Faro, Portugal
13°C11/15°C
12°C10/15°C
12°C10/15°C
16°C15/16°C
17°C15/19°C
17°C15/18°C
16°C15/19°C
14°C11/15°C
11°C9/14°C
12°C8/17°C
13°C9/18°C
13°C10/18°C
13°C10/17°C
11°C8/15°C
12°C7/18°C
14°C10/19°C
14°C10/19°C
14°C11/18°C
14°C11/18°C
15°C12/17°C
15°C12/20°C
15°C12/19°C
13°C8/18°C
13°C10/18°C
13°C10/17°C
15°C11/18°C
13°C11/15°C
13°C10/18°C
10°C8/11°C
13°C10/16°C
47AQI
29AQI
59AQI
33AQI
2026 Days Vs Air Quality
Castro Marim, Faro, Portugal
92%
61
8%
5
Total number of days with different AQI categories in last 67 days in 2026 (298 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% of 67 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
Castro Marim, Faro, Portugal
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI (US)
29AQI (US)
27AQI (US)
23AQI (US)
33AQI (US)
25AQI (US)
38AQI (US)
38AQI (US)
31AQI (US)
31AQI (US)
25AQI (US)
30AQI (US)
26AQI (US)
22AQI (US)
31AQI (US)
20AQI (US)
20AQI (US)
19AQI (US)
18AQI (US)
25AQI (US)
28AQI (US)
41AQI (US)
60AQI (US)
34AQI (US)
42AQI (US)
40AQI (US)
38AQI (US)
38AQI (US)
45AQI (US)
56AQI (US)
46AQI (US)
49AQI (US)
45AQI (US)
43AQI (US)
38AQI (US)
49AQI (US)
45AQI (US)
40AQI (US)
35AQI (US)
40AQI (US)
40AQI (US)
32AQI (US)
32AQI (US)
37AQI (US)
42AQI (US)
43AQI (US)
41AQI (US)
44AQI (US)
42AQI (US)
42AQI (US)
28AQI (US)
29AQI (US)
36AQI (US)
40AQI (US)
43AQI (US)
46AQI (US)
45AQI (US)
39AQI (US)
25AQI (US)
32AQI (US)
52AQI (US)
51AQI (US)
56AQI (US)
35AQI (US)
23AQI (US)
34AQI (US)
33AQI (US)
40AQI (US)
40AQI (US)
No. of days
202636AQI (US)
Highest AQI (US) recorded in
March40AQI (US)
Lowest AQI (US) recorded in
January33AQI (US)
202536AQI (US)
Highest AQI (US) recorded in
October48AQI (US)
Lowest AQI (US) recorded in
April28AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
November46AQI (US)
Lowest AQI (US) recorded in
July16AQI (US)
202332AQI (US)
Highest AQI (US) recorded in
June37AQI (US)
Lowest AQI (US) recorded in
January26AQI (US)
202230AQI (US)
Highest AQI (US) recorded in
July43AQI (US)
Lowest AQI (US) recorded in
December22AQI (US)
202131AQI (US)
Highest AQI (US) recorded in
February48AQI (US)
Lowest AQI (US) recorded in
January23AQI (US)
202031AQI (US)
Highest AQI (US) recorded in
March43AQI (US)
Lowest AQI (US) recorded in
December21AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Castro Marim's annual 2026 AQI (US) (36) shows an average percentage change of 14.5% (worsened AQI (US)) compared to previous years: 2020 (31), 2021 (31), 2022 (30), 2023 (32), 2024 (32), 2025 (36).