Lisbon, Lisboa, Portugal Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

July Air Quality Analysis
Lisbon, Lisboa, Portugal

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	54	26	42	51	34
Jul. 2	45	30	46	31	28
Jul. 3		29	41	43	26
Jul. 4		31	27	93	26
Jul. 5		32	53	65	22
Jul. 6		28	35	51	24
Jul. 7		28	20	45	21
Jul. 8		20	30	51	24
Jul. 9		17	27	48	32
Jul. 10		17	31	48	44
Jul. 11		21	19	35	29
Jul. 12		22	20	42	29
Jul. 13		30	29	52	28
Jul. 14		22	21	53	35
Jul. 15		26	25	47	47
Jul. 16		24	31	35	52
Jul. 17		27	30	35	40
Jul. 18		29	34	30	35
Jul. 19		19	31	28	29
Jul. 20		14	23	28	34
Jul. 21		27	22	30	34
Jul. 22		32	27	46	29
Jul. 23		38	27	42	24
Jul. 24		43	23	26	24
Jul. 25		52	29		18
Jul. 26		53	33		25
Jul. 27		25	24		29
Jul. 28		24	22		29
Jul. 29		32	19		30
Jul. 30		41	28		23
Jul. 31		42	26		25

AQI Trends: Highest and Lowest

Highest AQI recorded on

4th Jul 2022

93AQI

Lowest AQI recorded on

20th Jul 2024

14AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 45 of Good air quality, showing improvement over 2023 on the same day.

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Lisbon, Lisboa, Portugal

AQI

Day

Night

6 AM2nd Jul 2025

9 PM

5 AM3rd Jul 2025

Day time

Avg. Highest Time

6AM2nd Jul

45AQI

Avg. Lowest Time

5PM2nd Jul

38AQI

Night time

Avg. Highest Time

2AM3rd Jul

41AQI

Avg. Lowest Time

5AM3rd Jul

32AQI

In the last 24 hours,

Lisbon's AQI reached its highest point of 45 at 6 AM during the Day, while the lowest point, 32, was recorded at 5 AM during the Night between 2nd Jul and 3rd Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Lisbon, Lisboa, Portugal

JunJul

03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd

Day

Night

18°C15/20°C

19°C16/23°C

19°C15/23°C

20°C16/24°C

20°C16/25°C

23°C15/32°C

23°C20/30°C

20°C18/22°C

20°C17/22°C

20°C17/24°C

19°C16/23°C

20°C16/27°C

24°C18/30°C

25°C22/30°C

23°C19/29°C

22°C18/27°C

21°C17/26°C

21°C17/27°C

21°C17/26°C

20°C18/23°C

21°C18/24°C

22°C17/27°C

24°C18/31°C

27°C20/35°C

29°C24/35°C

29°C25/35°C

25°C20/31°C

23°C19/29°C

6 AM

1 PM

9 PM

1 AM

5 AM

0°C0/0°C

Day time

Avg. Highest Time

6 AM - 9 PM

39AQI

16 hours / Day

480 hours / Month

Avg. Lowest Time

6 AM - 9 PM

39AQI

16 hours / Day

480 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 6 AM to 9 PM (Avg. 39), while the lowest AQI was between 6 AM to 9 PM (Avg. 39).

Night time

Avg. Highest Time

12 AM - 11 PM

40AQI

8 hours / Day

240 hours / Month

Avg. Lowest Time

3 AM - 11 PM

39AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 40), while the lowest AQI was between 3 AM to 11 PM (Avg. 39).

2025 Days Vs Air Quality
Lisbon, Lisboa, Portugal

2025

95%

173

Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)

Good

173 Days

Moderate

10 Days

Poor

0 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 95%

Health Risk Level:

Very Low

In 2025, 95% 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
Lisbon, Lisboa, Portugal

AQI levels in 2025

AQI

PM2.5

PM10

SO2

NO2

Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

37AQI

35AQI

28AQI

23AQI

30AQI

39AQI

50AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202532AQI

173

Highest AQI recorded in

July

50AQI

Lowest AQI recorded in

April

23AQI

202437AQI

293

Highest AQI recorded in

September

44AQI

Lowest AQI recorded in

July

29AQI

202334AQI

284

Highest AQI recorded in

December

43AQI

Lowest AQI recorded in

September

28AQI

202233AQI

281

Highest AQI recorded in

August

53AQI

Lowest AQI recorded in

September

25AQI

202130AQI

328

Highest AQI recorded in

October

41AQI

Lowest AQI recorded in

January

9AQI

202019AQI

240

Highest AQI recorded in

May

31AQI

Lowest AQI recorded in

March

4AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2024(Avg.)

37AQI

Least Polluted Year Recorded

2020(Avg.)

19AQI

Lisbon's annual 2025 AQI (32) shows an average percentage change of 11.5% (worsened AQI) compared to previous years: 2020 (19), 2021 (30), 2022 (33), 2023 (34), 2024 (37).


6 AM	45
7 AM	44
8 AM	42
9 AM	44
10 AM	42
11 AM	40
12 PM	38
1 PM	38
2 PM	38
3 PM	38
4 PM	38
5 PM	38
6 PM	39
7 PM	39
8 PM	40
9 PM	40
10 PM	40
11 PM	40
12 AM	40
1 AM	40
2 AM	41
3 AM	32
4 AM	32
5 AM	32

Lisbon, Lisboa, Portugal Historical Air Quality Analysis

July Air Quality AnalysisLisbon, Lisboa, Portugal

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025Lisbon, Lisboa, Portugal

Day & Night AQI Trend : Jun - Jul 2025Lisbon, Lisboa, Portugal

2025 Days Vs Air Quality Lisbon, Lisboa, Portugal

Annual Air Quality InsightsLisbon, Lisboa, Portugal

AQI levels in 2025

No. of days

July Air Quality Analysis
Lisbon, Lisboa, Portugal

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Lisbon, Lisboa, Portugal

Day & Night AQI Trend : Jun - Jul 2025
Lisbon, Lisboa, Portugal

2025 Days Vs Air Quality
Lisbon, Lisboa, Portugal

Annual Air Quality Insights
Lisbon, Lisboa, Portugal