Check the air quality index in Madrid according to the method used by the EPA (American Environmental Protection Agency) and its effects on health.

In order to calculate the air quality index, at Eltiempo.es we apply the formula suggested by the EPA, which calculates the index for each pollutant depending on its concentration.

The pollutants are:

  • -Particles (PM)
  • -Carbon monoxide (CO)
  • -Ozone (O3)
  • -Nitrogen dioxide (NO2)
  • -Sulphur dioxide (SO2)

When we have calculated the indices for each pollutant, we select the one with the most unfavorable value. That value is then considered to be the air quality index for that moment.

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    Estaciones de Madrid

    Alcalá de Henares AQI O3 NO2 SO2 PM2.5 PM10 CO
    ALCALÁ DE HENARES 21:00 del 27/01/2021 29

    4

    7 ug/m3

    21

    41 ug/m3

    1

    2 ug/m3

    29

    7 ug/m3

    17

    17.88 ug/m3

    3

    400 ug/m3
    Alcobendas AQI O3 NO2 SO2 PM2.5 PM10 CO
    ALCOBENDAS 21:00 del 27/01/2021 25

    1

    2 ug/m3

    25

    48 ug/m3

    --

    --

    10

    11 ug/m3

    --

    Alcorcón AQI O3 NO2 SO2 PM2.5 PM10 CO
    ALCORCÓN 21:00 del 27/01/2021 25

    1

    2 ug/m3

    21

    41 ug/m3

    --

    25

    5.88 ug/m3

    --

    --

    Algete AQI O3 NO2 SO2 PM2.5 PM10 CO
    ALGETE 21:00 del 27/01/2021 36

    7

    15 ug/m3

    22

    44 ug/m3

    --

    36

    8.75 ug/m3

    --

    --

    Aranjuez AQI O3 NO2 SO2 PM2.5 PM10 CO
    ARANJUEZ 21:00 del 27/01/2021 15

    8

    17 ug/m3

    11

    23 ug/m3

    --

    --

    15

    15.75 ug/m3

    --

    Arganda del Rey AQI O3 NO2 SO2 PM2.5 PM10 CO
    ARGANDA DEL REY 21:00 del 27/01/2021 15

    6

    12 ug/m3

    15

    30 ug/m3

    --

    --

    13

    14.38 ug/m3

    --

    Collado Villalba AQI O3 NO2 SO2 PM2.5 PM10 CO
    COLLADO VILLALBA 21:00 del 27/01/2021 19

    19

    42 ug/m3

    8

    17 ug/m3

    --

    1 ug/m3

    19

    4.5 ug/m3

    --

    --

    Colmenar Viejo AQI O3 NO2 SO2 PM2.5 PM10 CO
    COLMENAR VIEJO 21:00 del 27/01/2021 28

    8

    18 ug/m3

    28

    56 ug/m3

    --

    --

    13

    13.75 ug/m3

    8

    800 ug/m3
    Coslada AQI O3 NO2 SO2 PM2.5 PM10 CO
    COSLADA 21:00 del 27/01/2021 51

    1

    1 ug/m3

    25

    48 ug/m3

    --

    51

    12.13 ug/m3

    19

    20.38 ug/m3

    --

    El Atazar AQI O3 NO2 SO2 PM2.5 PM10 CO
    EL ATAZAR 21:00 del 27/01/2021 36

    29

    62 ug/m3

    1

    1 ug/m3

    --

    1 ug/m3

    36

    8.75 ug/m3

    6

    6 ug/m3

    3

    400 ug/m3
    Fuenlabrada AQI O3 NO2 SO2 PM2.5 PM10 CO
    FUENLABRADA 21:00 del 27/01/2021 14

    9

    20 ug/m3

    9

    19 ug/m3

    --

    --

    14

    14.88 ug/m3

    --

    Getafe AQI O3 NO2 SO2 PM2.5 PM10 CO
    GETAFE 21:00 del 27/01/2021 27

    2

    4 ug/m3

    19

    38 ug/m3

    --

    27

    6.5 ug/m3

    11

    11.63 ug/m3

    --

    Guadalix de la Sierra AQI O3 NO2 SO2 PM2.5 PM10 CO
    GUADALIX DE LA SIERRA 21:00 del 27/01/2021 14

    5

    10 ug/m3

    14

    29 ug/m3

    --

    --

    7

    7.38 ug/m3

    --

    Leganés AQI O3 NO2 SO2 PM2.5 PM10 CO
    LEGANÉS 21:00 del 27/01/2021 36

    6

    14 ug/m3

    14

    28 ug/m3

    --

    36

    8.63 ug/m3

    16

    17.13 ug/m3

    --

    Madrid AQI O3 NO2 SO2 PM2.5 PM10 CO
    ARTURO SORIA 21:00 del 27/01/2021 29

    1

    1.91 ug/m3

    29

    58 ug/m3

    --

    --

    --

    --

    BARAJAS - PUEBLO 21:00 del 27/01/2021 35

    2

    4.04 ug/m3

    35

    69 ug/m3

    --

    --

    --

    --

    BARRIO DEL PILAR 21:00 del 27/01/2021 24

    4

    8.92 ug/m3

    24

    47 ug/m3

    --

    --

    --

    --

    CASA DE CAMPO 21:00 del 27/01/2021 18

    9

    20.42 ug/m3

    9

    18 ug/m3

    --

    18

    4.25 ug/m3

    8

    8.13 ug/m3

    --

    CASTELLANA 21:00 del 27/01/2021 49

    --

    23

    46 ug/m3

    --

    49

    11.75 ug/m3

    20

    22.13 ug/m3

    --

    CUATRO CAMINOS-PABLO IGLESIAS 21:00 del 27/01/2021 44

    --

    23

    45 ug/m3

    --

    44

    10.63 ug/m3

    19

    21 ug/m3

    --

    EL PARDO 21:00 del 27/01/2021 17

    4

    7.82 ug/m3

    17

    34 ug/m3

    --

    --

    --

    --

    ENSANCHE DE VALLECAS 21:00 del 27/01/2021 27

    1

    1.34 ug/m3

    27

    54 ug/m3

    --

    --

    --

    --

    ESCUELAS AGUIRRE 21:00 del 27/01/2021 41

    3

    5.88 ug/m3

    25

    48 ug/m3

    1

    2 ug/m3

    41

    9.88 ug/m3

    25

    27.13 ug/m3

    5

    500 ug/m3
    FAROLILLO 21:00 del 27/01/2021 22

    4

    8.23 ug/m3

    22

    44 ug/m3

    --

    --

    17

    18.5 ug/m3

    --

    FERNANDEZ LADREDA-OPORTO 21:00 del 27/01/2021 36

    --

    36

    71 ug/m3

    --

    34

    8.13 ug/m3

    14

    14.75 ug/m3

    8

    800 ug/m3
    JUAN CARLOS I 21:00 del 27/01/2021 25

    1

    2.77 ug/m3

    25

    51 ug/m3

    --

    --

    --

    --

    MAJADAHONDA 21:00 del 27/01/2021 10

    6

    13 ug/m3

    10

    20 ug/m3

    --

    --

    9

    10.13 ug/m3

    --

    MENDEZ ALVARO 21:00 del 27/01/2021 62

    --

    29

    58 ug/m3

    --

    62

    17.38 ug/m3

    20

    21.13 ug/m3

    --

    MORATALAZ 21:00 del 27/01/2021 30

    --

    30

    61 ug/m3

    3

    6 ug/m3

    --

    27

    28.75 ug/m3

    --

    PLAZA CASTILLA-CANAL 21:00 del 27/01/2021 66

    --

    26

    53 ug/m3

    --

    66

    19 ug/m3

    32

    34.25 ug/m3

    --

    PLAZA DE ESPAÑA 09:00 del 26/01/2021 22

    --

    22

    44 ug/m3

    3

    4 ug/m3

    --

    --

    10

    1000 ug/m3
    PLAZA DEL CARMEN 21:00 del 27/01/2021 20

    4

    8.37 ug/m3

    20

    39 ug/m3

    4

    7 ug/m3

    --

    --

    3

    300 ug/m3
    PUENTE DE VALLECAS 21:00 del 27/01/2021 24

    --

    23

    46 ug/m3

    --

    --

    24

    26.38 ug/m3

    --

    RAMÓN Y CAJAL 21:00 del 27/01/2021 25

    --

    25

    50 ug/m3

    --

    --

    --

    --

    RETIRO 15:00 del 27/01/2021 28

    2

    3.2 ug/m3

    28

    57 ug/m3

    --

    --

    --

    --

    SANCHINARRO 21:00 del 27/01/2021 25

    --

    25

    49 ug/m3

    --

    --

    15

    16.5 ug/m3

    --

    TRES OLIVOS 21:00 del 27/01/2021 23

    2

    3.37 ug/m3

    23

    46 ug/m3

    --

    --

    9

    9.5 ug/m3

    --

    URBANIZACION EMBAJADA 21:00 del 27/01/2021 34

    --

    34

    68 ug/m3

    --

    --

    31

    33.75 ug/m3

    --

    VILLAVERDE 21:00 del 27/01/2021 33

    2

    4.23 ug/m3

    33

    66 ug/m3

    --

    --

    --

    --

    Móstoles AQI O3 NO2 SO2 PM2.5 PM10 CO
    MÓSTOLES 21:00 del 27/01/2021 12

    7

    16 ug/m3

    12

    25 ug/m3

    --

    1 ug/m3

    --

    10

    10.75 ug/m3

    5

    500 ug/m3
    Orusco de Tajuña AQI O3 NO2 SO2 PM2.5 PM10 CO
    ORUSCO DE TAJUÑA 21:00 del 27/01/2021 17

    17

    36 ug/m3

    5

    9 ug/m3

    1

    2 ug/m3

    --

    10

    10.5 ug/m3

    3

    300 ug/m3
    Rivas-Vaciamadrid AQI O3 NO2 SO2 PM2.5 PM10 CO
    RIVAS-VACIAMADRID 21:00 del 27/01/2021 23

    3

    5 ug/m3

    20

    39 ug/m3

    --

    --

    23

    24.38 ug/m3

    --

    San Martín de Valdeiglesias AQI O3 NO2 SO2 PM2.5 PM10 CO
    SAN MARTIN DE VALDEIGLESIAS 21:00 del 27/01/2021 20

    20

    43 ug/m3

    2

    4 ug/m3

    --

    --

    10

    10.75 ug/m3

    --

    Torrejón de Ardoz AQI O3 NO2 SO2 PM2.5 PM10 CO
    TORREJON DE ARDOZ 21:00 del 27/01/2021 42

    2

    4 ug/m3

    27

    54 ug/m3

    --

    42

    10 ug/m3

    22

    24 ug/m3

    --

    Valdemoro AQI O3 NO2 SO2 PM2.5 PM10 CO
    VALDEMORO 21:00 del 27/01/2021 27

    14

    30 ug/m3

    8

    15 ug/m3

    --

    27

    6.5 ug/m3

    --

    --

    Villa del Prado AQI O3 NO2 SO2 PM2.5 PM10 CO
    VILLA DEL PRADO 21:00 del 27/01/2021 27

    13

    27 ug/m3

    2

    4 ug/m3

    --

    1 ug/m3

    27

    6.5 ug/m3

    9

    10 ug/m3

    3

    300 ug/m3
    Villarejo de Salvanés AQI O3 NO2 SO2 PM2.5 PM10 CO
    VILLAREJO DE SALVANES 21:00 del 27/01/2021 46

    15

    31 ug/m3

    9

    18 ug/m3

    --

    46

    11 ug/m3

    --

    --

    Air quality legend

    • 00 50

      Good. Air quality is satisfactory and does not pose a health risk or such health risk is very small.

    • 51 100

      Moderate. Air quality is acceptable. However, there may be moderate health concern for a small number of the population due to certain polluting agents. For example, people who are unusually sensitive to ozone may experience the symptoms of a respiratory condition.

    • 101 150

      Moderate sensitive groups. Members of sensitive groups may experience effects on their health. This implies that they are very likely to be affected by lower pollution levels. For example, people with lung diseases, the elderly and children are at greater risk when exposed to ozone, while people with lung or heart disease are at greater risk when exposed to particulate contamination. This level of contamination does not represent adverse health conditions for the general public.

    • 151 200

      Unhealthy. Anyone can start to experience effects on their health. Members of sensitive groups may experience more serious effects on their health.

    • 201 300

      Very unhealthy. At this level, a health emergency warning must be issued in order to prevent effects on the health of the entire population since everyone may experience negative effects on their health.

    • 301 500

      Hazardous for health. Hazardous values; it is very likely that the entire population will experience serious effects on their health. A health alert should be issued.


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