空气质量

The National Meteorological Service anticipates three to five heat waves in central Mexico from March to May 2026, with temperatures up to 4 degrees Celsius above average. The Megalopolis Environmental Commission estimates this could trigger up to 15 days of ozone contingency, imposing stricter vehicle restrictions in Mexico City and the State of Mexico.

March 11, 2026 由 AI 报道

For the second time this year, a strong sulphur smell has affected Johannesburg, leading to health complaints from residents. The City of Johannesburg detected elevated levels of hydrogen sulphide and sulphur dioxide, likely originating from industrial activities in Mpumalanga's Highveld area. Questions persist about monitoring and enforcement against major polluters.

Researchers have discovered far higher levels of microplastics and nanoplastics in city air than previously estimated, highlighting the atmosphere as a key pathway for plastic pollution. Using a new automated technique, scientists in China measured these tiny particles in Guangzhou and Xi'an, revealing concentrations two to six orders of magnitude above earlier reports. Road dust and rainfall significantly influence how these plastics move through the air.

January 12, 2026 由 AI 报道

在河北邻近省份，农村居民表示，在从煤炭转向天然气后，他们无法负担足够的取暖费用。今年冬季，华北白天气温常低于冰点，许多村民因高昂取暖成本而忍受寒冷。

Delhi’s air quality worsened to an AQI of 353—classified as 'very poor'—on December 27, exacerbated by dense fog trapping pollutants, according to the Central Pollution Control Board.

December 26, 2025 由 AI 报道

Following the activation of Phase I on December 25 due to Christmas fireworks and bonfires, Mexico State suspended the Atmospheric Environmental Contingency on December 26, 2025, as PM2.5 levels improved to acceptable ranges. The Alert Phase persists in Valle de Toluca and Santiago Tianguistenco due to ongoing pollutants, with normal Hoy No Circula rules in effect—no double restrictions.