墨西哥城的空气质量

墨西哥城的空气质量指数(AQI)和PM2.5空气污染

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带有彩色AQI图标的IQAir地图

空气质量提供者和数据来源

数据来自

数据提供者

3

数据来源

4

Instituto Nacional de Ecologia y Cambio Climatico (INECC)的主页标志Gobierno De La Ciudad De Mexico的主页标志5 匿名数据提供者的主页标志PurpleAir的主页标志Instituto Nacional de Ecologia y Cambio Climatico (INECC)的主页标志Gobierno De La Ciudad De Mexico的主页标志

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天气

墨西哥城现在的天气怎么样?

天气图标
天气多云
温度77°C
湿度21%
风速和风向16.1 mp/h
气压1019 mb

实时AQI城市排名

实时墨西哥 热门城市排名

小提示图标
#city美国 AQI
1 瓜达拉哈拉, 哈利斯科州

130

2 General Escobedo, 新萊昂州

115

3 梅特佩克, 墨西哥州

111

4 San Pedro Garza Garcia, 新萊昂州

109

5 Santa Catarina, 新萊昂州

107

6 Guadalupe, 新萊昂州

105

7 聖尼古拉斯市, 新萊昂州

104

8 蒙特雷, 新萊昂州

103

9 卡門城, 坎佩切州

98

10 Tepotzotlan, 墨西哥城市

93

(当地时间)

查看世界AQI排名

实时墨西哥城 AQI排名

实时墨西哥城空气质量排名

小提示图标
#station美国 AQI
1 Avenida Sur de Los 100 Metros

90

2 Colegio del Pilar S C

90

3 Calle Galileo

89

4 Educacion

88

5 Merced

87

6 Pedregal

77

7 Monte Parnaso

55

8 Miguel Hidalgo

4

(当地时间)

查看世界AQI排名

墨西哥城 的网络图像

11:08, 4月 11

墨西哥城 有空气污染吗

11:08, 4月 11墨西哥城 的网络图像缩略图

美国 AQI

90

实时空气质量指数(AQI)
中等

表示AQI等级的人脸

概览

墨西哥城现在的空气质量指数(AQI)是多少?

空气污染等级空气质量指数(AQI)主要污染物
中等 90 美国 AQItrendPM2.5
污染物浓度
PM2.5
30.5 µg/m³trend
o3
0.1 µg/m³trend
no2
0 µg/m³trend
co
446.6 µg/m³trend

健康建议

墨西哥城空气污染,如何做好防护?

开窗图标请关窗以防止室外脏空气进入室内
骑车图标敏感人群应减少室外运动

预报

墨西哥城空气质量指数(AQI)预报

污染等级天气温度风速和风向
星期三, 4月 7

中等 79 美国 AQI

表示AQI等级的人脸
星期四, 4月 8

中等 82 美国 AQI

表示AQI等级的人脸
星期五, 4月 9

中等 85 美国 AQI

表示AQI等级的人脸
星期六, 4月 10

中等 95 美国 AQI

表示AQI等级的人脸
天气图标80.6°62.6°
风向46度流动

0 mp/h

今天

中等 91 美国 AQI

表示AQI等级的人脸
天气图标82.4°64.4°
风向71度流动

0 mp/h

星期一, 4月 12

中等 84 美国 AQI

表示AQI等级的人脸
天气图标78.8°62.6°
风向12度流动

2.2 mp/h

星期二, 4月 13

中等 76 美国 AQI

表示AQI等级的人脸
天气图标80.6°59°
风向20度流动

4.5 mp/h

星期三, 4月 14

中等 81 美国 AQI

表示AQI等级的人脸
天气图标78.8°60.8°
风向40度流动

4.5 mp/h

星期四, 4月 15

中等 82 美国 AQI

表示AQI等级的人脸
天气图标82.4°64.4°
风向29度流动

0 mp/h

星期五, 4月 16

中等 80 美国 AQI

表示AQI等级的人脸
天气图标82.4°66.2°
风向52度流动

2.2 mp/h

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历史

墨西哥城历史空气质量图表

如何更好地远离空气污染侵害?

减少您在墨西哥城 空气的污染暴露值

墨西哥城 空气质量分析和数据

What is the air quality index of Mexico City?

Mexico City is (often abbreviated as CDMX) the capital and largest city of Mexico and the most populous city in North America. In 2009 the population for the city itself was 8.8 million people but when looking at the entire metropolitan region, this number swells to 21.3million. At the beginning of 2021, Mexico City was experiencing a “Moderate” level of air quality with a US AQI reading of 74. This follows the classification by the World Health Organisation (WHO). The concentration of PM2.5 was 23.3 µg/m³ but the level of sulphur dioxide (SO2) was 0 µg/m³.

What is the main source of air pollution in Mexico City?

Vehicles represent a major source of air pollution in Mexico City. The automotive fleet includes a large group of vehicles propelled by the combustion of hydrocarbons (fossil fuels) and include mopeds, cars and trucks.

The emissions from the exhausts of these vehicles contain carbon monoxide, hydrocarbons and nitrogen oxides that are released into the atmosphere in significant quantities; they are the components of "photochemical oxidising smog". For this reason, the most populated urban areas are those that suffer the most pollution of this type.

Another aggravating factor in the growing air pollution is the geographical location of the city. Because it is in a valley, when the intensity of the winds is reduced, the diffusion of pollutants in the atmosphere is minimal. For almost 7 months a year, the area maintains on average low-speed winds (less than 1.5 m/sec.), Altitude also plays a part in the high rate of pollution, since the low oxygen content causes deficiencies in the internal combustion processes of the engines. In Mexico City, a cubic meter of air contains 212 grams of oxygen, while at sea level it contains 275. The combustion efficiency of a well-tuned car is 92 per cent, and in the DF 69 per cent, due to the higher altitude.

What is the history of the pollution level in Mexico City?

Throughout 2019, Mexico City’s registered air quality was between 12.1 and 35.4 µg/m³. The highest level recorded was in May when the figure jumped to 34 µg/m³. Looking back over previous years, it is not seen to change by a noticeable amount. In 2017 the reading was 20.4 µg/m³ followed by 19.7 µg/m³ in 2018. The average figure for 2019 was 20.5 µg/m³, so not much different.

Is air pollution in Mexico City getting better or worse?

Back in the 1980s and 1990s lead, ozone, sulphur and carbon were so common that residents used to say that birds would fall from the sky because of it.

As the Mexican economy grew at that time, so did the number of vehicles on the road and emissions from factories increased at an alarming rate. It earned the accolade of the world’s most polluted city. A management programme was introduced which introduced reforms that would clean up the air. Levels of ozone were reported to be around 500 parts per billion (ppb), they are now at a more respectable level of between 120 and 150 ppb.

In 1986 natural gas was being introduced as a replacement for fuel oil in industry and in thermoelectric power generation. In 1989, both city and regional governments introduced a “Cars don’t circulate” (Hoy No Circula) which eliminated about one-fifth of the cars on rotating days between Monday to Friday from the city, depending on the last digit of their registration plates. Higher quality unleaded fuel was made readily available and stricter emissions were established through the broad use of catalytic converters.

In the 80s and 90s, Mexico City issued “red” alerts almost constantly whereas now, they maybe happen as rarely as three or four times per year.

What can be done to improve the air quality in Mexico City?

One way to protect the health of the population is through continuous monitoring and dissemination of the status of air quality. In Mexico City, the Atmospheric Monitoring System (SIMAT) is responsible for the permanent measurement of the main air pollutants.

SIMAT has more than 40 monitoring sites distributed in the metropolitan area, including demarcations of the Federal District and the metropolitan area of the State of Mexico. These sites are known as air quality monitoring stations, and most of them use continuous equipment to measure the criteria pollutants required by federal regulations such as sulphur dioxide, carbon monoxide, nitrogen dioxide, ozone and suspended particles. In some of them, continuous measurements of the main surface meteorological variables are also made, including ultraviolet solar radiation. In the rest, manual equipment is used to collect samples of suspended particles and atmospheric deposition.

Based on information gathered by these systems is the government able to act in a way to mitigate the impact of high levels of pollution. The ban on driving cars into the city is one such example.

It is estimated that there are some 4.7 million vehicles registered in Mexico City and 5.3 million in the entire metropolitan area. It is estimated that 80 per cent are for private use, 7 per cent correspond to public transport and 13 per cent to cargo transportation. On a brighter note though, it is thought that private cars represent only one-third of the total trips made by the inhabitants daily, while public transport accounts for the remaining two thirds.

It is recognised that cargo transportation (of which more than 700,000 units are registered) is essential for the country's economy but is highly polluting, as it causes problems of road traffic, increased noise and emissions of black carbon and fine particles.

The cars in general used in Mexico City are of poorer quality than their USA counterparts. It is estimated that they create 8 - 10 times more pollution than USA vehicles due to the strict rules and regulations there.

What are the effects of breathing Mexico City’s poor quality air?

Long-term exposure to air pollutants can not only imply effects such as watery eyes, cough or irritation in the throat, it is also associated with heart disease, cerebrovascular infarctions, lung diseases and cancer, in the case of adults, as well as acute respiratory diseases in minors, such as asthma.

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