Air Pollution in Leiria: Real-time Air Quality Index and smog alert.

The latest data Last 7 days Leiria pollution September 2017 - May 2020 Quality of life
Current data from stations: PT02019
Locations: Leiria Municipality »
Pollution and air quality forecast for Leiria. Today is Thursday, May 1, 2025. The following air pollution values have been recorded for Leiria:
  1. ozone (O3) - 66 (Good)
  2. sulfur dioxide (SO2) - 3 (Good)
  3. nitrogen dioxide (NO2) - 1 (Good)
  4. particulate matter (PM10) suspended dust - 23 (Moderate)
  5. particulate matter (PM2.5) dust - 9 (Good)
Real-time Air Quality Index (AQI) for Leiria, Wednesday, January 17, 2024: 2.

air quality index: 1
AQI 2 Moderate

What is the air quality in Leiria today? Is the air polluted in Leiria?. Is there smog?

Today (Wednesday, January 17, 2024) air quality is moderate in Leiria. Some pollutants in Leiria may slightly affect very few hypersensitive individuals. Air pollutants in Leiria may cause minor breathing discomfort to sensitive people.


How is the O3 level today in Leiria? (ozone (O3))
66 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
3 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
1 (Good)

What is the level of PM10 today in Leiria? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Leiria is: 23 (Moderate) The highest PM10 values usually occur in month: 43 (October 2017). The lowest value of particulate matter PM10 pollution in Leiria is usually recorded in: March (6.5).

What is the current level of PM2.5 in Leiria? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 9 (Good) For comparison, the highest level of PM2.5 in Leiria in the last 7 days was: 12 (Wednesday, January 17, 2024) and the lowest: 5 (Monday, January 15, 2024). The highest PM2.5 values were recorded: 18 (January 2019). The lowest level of particulate matter PM2.5 pollution occurs in month: June (4.7).



Current data Wednesday, January 17, 2024, 7:00 AM

O3 66 (Good)

SO2 3 (Good)

NO2 1 (Good)

PM10 23 (Moderate)

PM2,5 9 (Good)

Data on air pollution from recent days in Leiria

index 2024-01-10 2024-01-11 2024-01-12 2024-01-13 2024-01-14 2024-01-15 2024-01-16 2024-01-17
o3 42
Good		 41
Good		 39
Good		 44
Good		 35
Good		 56
Good		 50
Good		 70
Moderate
so2 4
Good		 4
Good		 4
Good		 4
Good		 4
Good		 4
Good		 3
Good		 3
Good
pm10 15
Good		 15
Good		 8
Good		 11
Good		 20
Moderate		 19
Good		 19
Good		 26
Moderate
pm25 10
Good		 7
Good		 8
Good		 7
Good		 11
Good		 5
Good		 5
Good		 12
Good
no2 3
Good		 3
Good		 3
Good		 2
Good		 3
Good		 1
Good		 2
Good		 0
Good
data source »
Air pollution in Leiria from September 2017 to May 2020
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-10 2017-09
pm25 6 (Good) 6 (Good) 11 (Good) 13 (Moderate) 17 (Moderate) 10 (Good) 7.9 (Good) 7.1 (Good) 7.9 (Good) 6.8 (Good) 12 (Good) 4.7 (Good) 7.5 (Good) 6.1 (Good) 8.8 (Good) 15 (Moderate) 18 (Moderate) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
so2 1.9 (Good) 2.7 (Good) 1.7 (Good) 1.1 (Good) 6.3 (Good) 4.6 (Good) 5.7 (Good) 3.5 (Good) 3.5 (Good) 3.1 (Good) 4.6 (Good) 4.2 (Good) 5.3 (Good) 3.7 (Good) 5.5 (Good) 5.2 (Good) 9.2 (Good) 8.5 (Good) 5.9 (Good) 8.4 (Good) 3.3 (Good) 4.5 (Good) 2.6 (Good) 6.1 (Good) 11 (Good) 4.7 (Good) 19 (Good) - (Good) - (Good) - (Good) - (Good)
no2 1.2 (Good) 1.6 (Good) 2.2 (Good) 5 (Good) 3.7 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 2.5 (Good) 5.8 (Good) 6 (Good) 8.9 (Good) 10 (Good) - (Good) - (Good) - (Good) - (Good) 4.9 (Good) 3 (Good) 3 (Good) 3.6 (Good) 2.8 (Good) 2.6 (Good) - (Good) - (Good) - (Good) - (Good)
pm10 14 (Good) 11 (Good) 21 (Moderate) 24 (Moderate) 26 (Moderate) 19 (Good) 19 (Good) 15 (Good) 18 (Good) 14 (Good) 16 (Good) 12 (Good) 15 (Good) 13 (Good) 17 (Good) 29 (Moderate) 34 (Moderate) 22 (Moderate) 25 (Moderate) 8.5 (Good) 14 (Good) 22 (Moderate) 13 (Good) 13 (Good) 22 (Moderate) 24 (Moderate) 6.5 (Good) 17 (Good) 37 (Moderate) 43 (Moderate) 10 (Good)
o3 64 (Good) 66 (Good) 68 (Good) 53 (Good) 58 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 72 (Moderate) 67 (Good) 75 (Moderate) 72 (Moderate) 70 (Moderate) 57 (Good) 47 (Good) 58 (Good) 43 (Good)
data source »

Quality of life in Leiria

Green and Parks in the City

Leiria 63%

Morocco: 41% Andorra: 69% Spain: 70% France: 61%

Pleasure of spending time in the city

Leiria 84%

Morocco: 41% Andorra: 84% Spain: 76% France: 68%

Air Pollution

Leiria 13%

Morocco: 63% Andorra: 29% Spain: 30% France: 36%

Garbage Disposal

Leiria 78%

Morocco: 33% Andorra: 89% Spain: 73% France: 59%

Availability and quality of drinking water

Leiria 75%

Morocco: 55% Andorra: 100% Spain: 74% France: 73%

Cleanliness and tidiness

Leiria 66%

Morocco: 39% Andorra: 75% Spain: 66% France: 48%

Noise and Light pollution

Leiria 22%

Morocco: 55% Andorra: 29% Spain: 46% France: 54%

Water Pollution

Leiria 34%

Morocco: 54% Andorra: 19% Spain: 29% France: 39%
Source: Numbeo


PT02019

Wednesday, January 17, 2024, 7:00 AM

O3 66 (Good)

ozone (O3)

SO2 3.3 (Good)

sulfur dioxide (SO2)

NO2 1 (Good)

nitrogen dioxide (NO2)

PM10 23 (Moderate)

particulate matter (PM10) suspended dust

PM2,5 9 (Good)

particulate matter (PM2.5) dust

PT02019

index 2024-01-17 2024-01-16 2024-01-15 2024-01-14 2024-01-13 2024-01-12 2024-01-11 2024-01-10
o3 70 50 56 35 44 39 41 42
so2 3.2 3.3 3.6 3.6 3.7 4.1 3.6 3.6
pm10 26 19 19 20 11 8.3 15 15
pm25 12 5 4.8 11 6.8 7.6 7 9.6
no2 0.13 1.7 0.75 2.8 2.2 2.6 3.3 3.5

PT02019

2017-09   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-10 2017-09
pm10 14 11 21 24 26 19 19 15 18 14 16 12 15 13 17 29 34 22 25 8.5 14 22 13 13 22 24 6.5 17 37 43 10
o3 64 66 68 53 58 - - - - - - - - - - - - - - - - - 72 67 75 72 70 57 47 58 43
so2 1.9 2.7 1.7 1.1 6.3 4.6 5.7 3.5 3.5 3.1 4.6 4.2 5.3 3.7 5.5 5.2 9.2 8.5 5.9 8.4 3.3 4.5 2.6 6.1 11 4.7 19 - - - -
no2 1.2 1.6 2.2 5 3.7 - - - - - - - 2.5 5.8 6 8.9 10 - - - - 4.9 3 3 3.6 2.8 2.6 - - - -
pm25 6 6 11 13 17 10 7.9 7.1 7.9 6.8 12 4.7 7.5 6.1 8.8 15 18 - - - - - - - - - - - - - -

* Pollution data source: https://openaq.org (EEA Portugal) The data is licensed under CC-By 4.0