Lisbon, Lisboa, Portugal Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Lisbon, Lisboa, Portugal
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 32 of Good air quality, showing improvement over 2025, 2023 and 2022 on the same day.
Day & Night AQI Trend: 1st Oct - 2nd Oct 2026
Lisbon, Lisboa, Portugal
7 AM1st Oct 2026
7 PM
6 AM2nd Oct 2026
49AQI
36AQI
36AQI
33AQI
In the last 24 hours,
Lisbon's AQI reached its highest point of 49 at 2 PM during the Day, while the lowest point, 33, was recorded at 6 AM during the Night between 1st Oct and 2nd Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Lisbon, Lisboa, Portugal
29°C23/39°C
29°C25/32°C
28°C25/35°C
26°C22/31°C
24°C19/32°C
22°C18/26°C
21°C19/24°C
22°C18/30°C
23°C18/31°C
27°C22/35°C
28°C23/33°C
27°C24/32°C
24°C20/28°C
20°C17/24°C
22°C18/29°C
22°C17/29°C
22°C19/27°C
26°C21/32°C
26°C21/34°C
27°C23/33°C
24°C20/30°C
26°C22/32°C
23°C19/31°C
24°C20/33°C
23°C20/30°C
22°C20/26°C
22°C20/25°C
20°C18/23°C
19°C16/24°C
21°C17/27°C
34AQI
32AQI
33AQI
29AQI
2026 Days Vs Air Quality
Lisbon, Lisboa, Portugal
97%
264
3%
8
Total number of days with different AQI categories in last 275 days in 2026 (90 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 275 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
Lisbon, Lisboa, Portugal
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
43AQI (US)
21AQI (US)
19AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
28AQI (US)
39AQI (US)
22AQI (US)
28AQI (US)
45AQI (US)
21AQI (US)
13AQI (US)
18AQI (US)
22AQI (US)
26AQI (US)
28AQI (US)
34AQI (US)
32AQI (US)
27AQI (US)
24AQI (US)
36AQI (US)
45AQI (US)
33AQI (US)
47AQI (US)
46AQI (US)
39AQI (US)
41AQI (US)
45AQI (US)
58AQI (US)
43AQI (US)
43AQI (US)
47AQI (US)
46AQI (US)
44AQI (US)
49AQI (US)
46AQI (US)
43AQI (US)
44AQI (US)
47AQI (US)
31AQI (US)
24AQI (US)
44AQI (US)
14AQI (US)
41AQI (US)
38AQI (US)
30AQI (US)
44AQI (US)
43AQI (US)
43AQI (US)
35AQI (US)
45AQI (US)
44AQI (US)
28AQI (US)
66AQI (US)
45AQI (US)
51AQI (US)
13AQI (US)
13AQI (US)
39AQI (US)
45AQI (US)
47AQI (US)
54AQI (US)
33AQI (US)
14AQI (US)
37AQI (US)
29AQI (US)
37AQI (US)
30AQI (US)
43AQI (US)
41AQI (US)
38AQI (US)
33AQI (US)
29AQI (US)
36AQI (US)
35AQI (US)
29AQI (US)
30AQI (US)
34AQI (US)
36AQI (US)
36AQI (US)
43AQI (US)
37AQI (US)
38AQI (US)
24AQI (US)
20AQI (US)
30AQI (US)
26AQI (US)
24AQI (US)
28AQI (US)
29AQI (US)
29AQI (US)
27AQI (US)
29AQI (US)
42AQI (US)
18AQI (US)
25AQI (US)
38AQI (US)
32AQI (US)
64AQI (US)
17AQI (US)
11AQI (US)
30AQI (US)
26AQI (US)
33AQI (US)
33AQI (US)
32AQI (US)
44AQI (US)
19AQI (US)
27AQI (US)
25AQI (US)
22AQI (US)
28AQI (US)
30AQI (US)
32AQI (US)
27AQI (US)
24AQI (US)
25AQI (US)
30AQI (US)
23AQI (US)
20AQI (US)
32AQI (US)
38AQI (US)
33AQI (US)
28AQI (US)
22AQI (US)
30AQI (US)
27AQI (US)
31AQI (US)
29AQI (US)
26AQI (US)
34AQI (US)
35AQI (US)
36AQI (US)
36AQI (US)
37AQI (US)
36AQI (US)
38AQI (US)
43AQI (US)
40AQI (US)
47AQI (US)
36AQI (US)
29AQI (US)
28AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
21AQI (US)
22AQI (US)
23AQI (US)
23AQI (US)
21AQI (US)
23AQI (US)
22AQI (US)
24AQI (US)
25AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
21AQI (US)
19AQI (US)
24AQI (US)
23AQI (US)
24AQI (US)
20AQI (US)
19AQI (US)
25AQI (US)
23AQI (US)
21AQI (US)
22AQI (US)
25AQI (US)
26AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
26AQI (US)
26AQI (US)
29AQI (US)
29AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
23AQI (US)
23AQI (US)
32AQI (US)
34AQI (US)
23AQI (US)
26AQI (US)
28AQI (US)
32AQI (US)
31AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
26AQI (US)
34AQI (US)
37AQI (US)
29AQI (US)
23AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
39AQI (US)
34AQI (US)
34AQI (US)
37AQI (US)
30AQI (US)
29AQI (US)
36AQI (US)
32AQI (US)
35AQI (US)
26AQI (US)
27AQI (US)
29AQI (US)
25AQI (US)
52AQI (US)
53AQI (US)
43AQI (US)
36AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
26AQI (US)
31AQI (US)
28AQI (US)
29AQI (US)
34AQI (US)
24AQI (US)
29AQI (US)
28AQI (US)
32AQI (US)
27AQI (US)
31AQI (US)
47AQI (US)
54AQI (US)
50AQI (US)
27AQI (US)
28AQI (US)
29AQI (US)
27AQI (US)
25AQI (US)
23AQI (US)
27AQI (US)
36AQI (US)
32AQI (US)
34AQI (US)
22AQI (US)
28AQI (US)
29AQI (US)
30AQI (US)
34AQI (US)
30AQI (US)
41AQI (US)
35AQI (US)
25AQI (US)
25AQI (US)
31AQI (US)
27AQI (US)
33AQI (US)
31AQI (US)
38AQI (US)
32AQI (US)
32AQI (US)
39AQI (US)
34AQI (US)
29AQI (US)
32AQI (US)
23AQI (US)
27AQI (US)
32AQI (US)
32AQI (US)
35AQI (US)
No. of days
202631AQI (US)
Highest AQI (US) recorded in
February39AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
October46AQI (US)
Lowest AQI (US) recorded in
April23AQI (US)
202437AQI (US)
Highest AQI (US) recorded in
September44AQI (US)
Lowest AQI (US) recorded in
July29AQI (US)
202334AQI (US)
Highest AQI (US) recorded in
December43AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
202233AQI (US)
Highest AQI (US) recorded in
August53AQI (US)
Lowest AQI (US) recorded in
September25AQI (US)
202130AQI (US)
Highest AQI (US) recorded in
October41AQI (US)
Lowest AQI (US) recorded in
January9AQI (US)
202019AQI (US)
Highest AQI (US) recorded in
May31AQI (US)
Lowest AQI (US) recorded in
March4AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Lisbon's annual 2026 AQI (US) (31) shows an average percentage change of 3.9% (worsened AQI (US)) compared to previous years: 2020 (19), 2021 (30), 2022 (33), 2023 (34), 2024 (37), 2025 (35).