Latest news with #ChristiChester-Schroeder
Al Jazeera
11-03-2025
- Health
- Al Jazeera
Most of the world's population is breathing dirty air: Report
Most of the world's population is breathing polluted air, with only seven countries meeting World Health Organization (WHO) air quality standards last year, according to a new report. Switzerland-based air quality monitoring database IQAir unveiled its findings on Tuesday, which draw on data from 40,000 air quality monitoring stations in 138 countries, finding that Chad, Bangladesh, Pakistan, India and the Democratic Republic of the Congo have the most polluted air in the world. Of the countries analysed, only Australia, New Zealand, the Bahamas, Barbados, Grenada, Estonia and Iceland met WHO's international air-quality standards, according to the database. Data gap The scale of the problem might be far greater than reported, given that many parts of the world lack the monitoring needed for more accurate data. Across Africa, for example, there is only one monitoring station for every 3.7 million people. The data gap could grow wider following an announcement by the US Department of State last week that it will no longer make public the data it gathers from its embassies and consulates around the world. Many developing countries have relied on air quality sensors mounted on US embassy and consulate buildings to track their smog levels, but the US State Department is now ending the monitoring scheme, citing budget constraints. 'Most countries have a few other data sources, but it's going to impact Africa significantly, because oftentimes these are the only sources of publicly available real-time air quality monitoring data,' said Christi Chester-Schroeder, IQAir's air quality science manager. Christa Hasenkopf, director of the Clean Air Program at the University of Chicago's Energy Policy Institute (EPIC), said at least 34 countries will lose access to reliable pollution data after the US programme closes. The State Department scheme improved air quality in the cities where the monitors were placed, boosting life expectancy and even reducing hazard allowances for US diplomats, meaning that it paid for itself, Hasenkopf said. As a result of the State Department's move, more than 17 years of data were removed last week from the US government's official air quality monitoring site, including readings collected in Chad. According to the report, Chad and Bangladesh had average smog levels more than 15 times higher than WHO guidelines last year. Chad was ranked the most polluted country in 2022 due to Sahara dust as well as uncontrolled crop burning. Climate change is playing an increasing role in driving up pollution, Chester-Schroeder warned, with higher temperatures causing fiercer and lengthier forest fires that have swept through parts of Southeast Asia and South America.
Asharq Al-Awsat
11-03-2025
- Science
- Asharq Al-Awsat
Only Seven Countries Met WHO Air Quality Standards in 2024, Data Shows
Only seven countries met World Health Organization (WHO) air quality standards last year, data showed on Tuesday, as researchers warned that the war on smog would only get harder after the United States shut down its global monitoring efforts. Chad and Bangladesh were the world's most polluted countries in 2024, with average smog levels more than 15 times higher than WHO guidelines, according to figures compiled by Swiss air quality monitoring firm IQAir. Only Australia, New Zealand, the Bahamas, Barbados, Grenada, Estonia and Iceland made the grade, IQAir said. Significant data gaps, especially in Asia and Africa, cloud the worldwide picture, and many developing countries have relied on air quality sensors mounted on US embassy and consulate buildings to track their smog levels. However, the State Department has recently ended the scheme, citing budget constraints, with more than 17 years of data removed last week from the US government's official air quality monitoring site, including readings collected in Chad. "Most countries have a few other data sources, but it's going to impact Africa significantly, because oftentimes these are the only sources of publicly available real-time air quality monitoring data," said Christi Chester-Schroeder, IQAir's air quality science manager. Data concerns meant Chad was excluded from IQAir's 2023 list, but it was also ranked the most polluted country in 2022, plagued by Sahara dust as well as uncontrolled crop burning. Average concentrations of small, hazardous airborne particles known as PM2.5 hit 91.8 micrograms per cubic meter (mg/cu m) last year in the country, slightly higher than 2022. The WHO recommends levels of no more than 5 mg/cu m, a standard met by only 17% of cities last year. India, fifth in the smog rankings behind Chad, Bangladesh, Pakistan and the Democratic Republic of Congo, saw average PM2.5 fall 7% on the year to 50.6 mg/cu m. But it accounted for 12 of the top 20 most polluted cities, with Byrnihat, in a heavily industrialized part of the country's northeast, in first place, registering an average PM2.5 level of 128 mg/cu m. Climate change is playing an increasing role in driving up pollution, Chester-Schroeder warned, with higher temperatures causing fiercer and lengthier forest fires that swept through parts of South East Asia and South America. Christa Hasenkopf, director of the Clean Air Program at the University of Chicago's Energy Policy Institute (EPIC), said at least 34 countries will lose access to reliable pollution data after the US program was closed. The State Department scheme improved air quality in the cities where the monitors were placed, boosting life expectancy and even reducing hazard allowances for US diplomats, meaning that it paid for itself, Hasenkopf said. "(It) is a giant blow to air quality efforts worldwide," she said.
Voice of America
11-03-2025
- Health
- Voice of America
Only seven countries met WHO air quality standards in 2024, data shows
Only seven countries met World Health Organization air quality standards last year, data showed on Tuesday, as researchers warned that the war on smog would only get harder after the United States shut down its global monitoring efforts. Chad and Bangladesh were the world's most polluted countries in 2024, with average smog levels more than 15 times higher than WHO guidelines, according to figures compiled by Swiss air quality monitoring firm IQAir. Only Australia, New Zealand, the Bahamas, Barbados, Grenada, Estonia and Iceland made the grade, IQAir said. Significant data gaps, especially in Asia and Africa, cloud the worldwide picture, and many developing countries have relied on air quality sensors mounted on U.S. embassy and consulate buildings to track their smog levels. However, the State Department has recently ended the scheme, citing budget constraints, with more than 17 years of data removed last week from the U.S. government's official air quality monitoring site, including readings collected in Chad. "Most countries have a few other data sources, but it's going to impact Africa significantly, because often times these are the only sources of publicly available real-time air quality monitoring data," said Christi Chester-Schroeder, IQAir's air quality science manager. Data concerns meant Chad was excluded from IQAir's 2023 list, but it was also ranked the most polluted country in 2022, plagued by Sahara dust as well as uncontrolled crop burning. Average concentrations of small, hazardous airborne particles known as PM2.5 hit 91.8 micrograms per cubic meter (mg/cu m) last year in the country, slightly higher than 2022. The WHO recommends levels of no more than 5 mg/cu m, a standard met by only 17% of cities last year. India, fifth in the smog rankings behind Chad, Bangladesh, Pakistan and the Democratic Republic of Congo, saw average PM2.5 fall 7% on the year to 50.6 mg/cu m. But it accounted for 12 of the top 20 most polluted cities, with Byrnihat, in a heavily industrialized part of the country's northeast, in first place, registering an average PM2.5 level of 128 mg/cu m. Climate change is playing an increasing role in driving up pollution, Chester-Schroeder warned, with higher temperatures causing fiercer and lengthier forest fires that swept through parts of Southeast Asia and South America. Christa Hasenkopf, director of the Clean Air Program at the University of Chicago's Energy Policy Institute (EPIC), said at least 34 countries will lose access to reliable pollution data after the U.S. program was closed. The State Department scheme improved air quality in the cities where the monitors were placed, boosting life expectancy and even reducing hazard allowances for U.S. diplomats, meaning that it paid for itself, Hasenkopf said. "(It) is a giant blow to air quality efforts worldwide," she said.
Arab News
11-03-2025
- Health
- Arab News
Pakistan, India among countries suffering from world's most polluted air— report
SINGAPORE: Only seven countries met World Health Organization (WHO) air quality standards last year, data showed on Tuesday, as researchers warned that the war on smog would only get harder after the United States shut down its global monitoring efforts. Chad and Bangladesh were the world's most polluted countries in 2024, with average smog levels more than 15 times higher than WHO guidelines, according to figures compiled by Swiss air quality monitoring firm IQAir. Only Australia, New Zealand, the Bahamas, Barbados, Grenada, Estonia and Iceland made the grade, IQAir said. Significant data gaps, especially in Asia and Africa, cloud the worldwide picture, and many developing countries have relied on air quality sensors mounted on US embassy and consulate buildings to track their smog levels. However, the State Department has recently ended the scheme, citing budget constraints, with more than 17 years of data removed last week from the US government's official air quality monitoring site, including readings collected in Chad. 'Most countries have a few other data sources, but it's going to impact Africa significantly, because oftentimes these are the only sources of publicly available real-time air quality monitoring data,' said Christi Chester-Schroeder, IQAir's air quality science manager. Data concerns meant Chad was excluded from IQAir's 2023 list, but it was also ranked the most polluted country in 2022, plagued by Sahara dust as well as uncontrolled crop burning. Average concentrations of small, hazardous airborne particles known as PM2.5 hit 91.8 micrograms per cubic meter (mg/cu m) last year in the country, slightly higher than 2022. The WHO recommends levels of no more than 5 mg/cu m, a standard met by only 17 percent of cities last year. India, fifth in the smog rankings behind Chad, Bangladesh, Pakistan and the Democratic Republic of Congo, saw average PM2.5 fall 7 percent on the year to 50.6 mg/cu m. But it accounted for 12 of the top 20 most polluted cities, with Byrnihat, in a heavily industrialized part of the country's northeast, in first place, registering an average PM2.5 level of 128 mg/cu m. Climate change is playing an increasing role in driving up pollution, Chester-Schroeder warned, with higher temperatures causing fiercer and lengthier forest fires that swept through parts of South East Asia and South America. Christa Hasenkopf, director of the Clean Air Program at the University of Chicago's Energy Policy Institute (EPIC), said at least 34 countries will lose access to reliable pollution data after the US program was closed. The State Department scheme improved air quality in the cities where the monitors were placed, boosting life expectancy and even reducing hazard allowances for US diplomats, meaning that it paid for itself, Hasenkopf said. '(It) is a giant blow to air quality efforts worldwide,' she said
Reuters
11-03-2025
- Health
- Reuters
Only seven countries met WHO air quality standards in 2024, data shows
SINGAPORE, March 11 (Reuters) - Only seven countries met World Health Organization (WHO) air quality standards last year, data showed on Tuesday, as researchers warned that the war on smog would only get harder after the United States shut down its global monitoring efforts. Chad and Bangladesh were the world's most polluted countries in 2024, with average smog levels more than 15 times higher than WHO guidelines, according to figures compiled by Swiss air quality monitoring firm IQAir. Only Australia, New Zealand, the Bahamas, Barbados, Grenada, Estonia and Iceland made the grade, IQAir said. Significant data gaps, especially in Asia and Africa, cloud the worldwide picture, and many developing countries have relied on air quality sensors mounted on U.S. embassy and consulate buildings to track their smog levels. However, the State Department has recently ended the scheme, citing budget constraints, with more than 17 years of data removed last week from the U.S. government's official air quality monitoring site, opens new tab, including readings collected in Chad. "Most countries have a few other data sources, but it's going to impact Africa significantly, because oftentimes these are the only sources of publicly available real-time air quality monitoring data," said Christi Chester-Schroeder, IQAir's air quality science manager. Data concerns meant Chad was excluded from IQAir's 2023 list, but it was also ranked the most polluted country in 2022, plagued by Sahara dust as well as uncontrolled crop burning. Average concentrations of small, hazardous airborne particles known as PM2.5 hit 91.8 micrograms per cubic metre (mg/cu m) last year in the country, slightly higher than 2022. The WHO recommends levels of no more than 5 mg/cu m, a standard met by only 17% of cities last year. India, fifth in the smog rankings behind Chad, Bangladesh, Pakistan and the Democratic Republic of Congo, saw average PM2.5 fall 7% on the year to 50.6 mg/cu m. But it accounted for 12 of the top 20 most polluted cities, with Byrnihat, in a heavily industrialised part of the country's northeast, in first place, registering an average PM2.5 level of 128 mg/cu m. Climate change is playing an increasing role in driving up pollution, Chester-Schroeder warned, with higher temperatures causing fiercer and lengthier forest fires that swept through parts of South East Asia and South America. Christa Hasenkopf, director of the Clean Air Program at the University of Chicago's Energy Policy Institute (EPIC), said at least 34 countries will lose access to reliable pollution data after the U.S. programme was closed. The State Department scheme improved air quality in the cities where the monitors were placed, boosting life expectancy and even reducing hazard allowances for U.S. diplomats, meaning that it paid for itself, Hasenkopf said. "(It) is a giant blow to air quality efforts worldwide," she said. Keep up with the latest medical breakthroughs and healthcare trends with the Reuters Health Rounds newsletter. Sign up here.
