Qualità dell'aria
La CAMe dichiara la fase 1 di emergenza ambientale a CDMX e Edomex a causa dell'ondata di caldo
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La Commissione Ambientale della Megalopoli (CAMe) ha dichiarato la fase 1 di emergenza ambientale sabato 25 aprile a Città del Messico e nello Stato del Messico a causa degli elevati livelli di ozono derivanti da un'ondata di caldo. Restrizioni estese alla circolazione dei veicoli sono in vigore oggi, domenica 26 aprile, nell'ambito del programma Doble Hoy No Circula dalle 5:00 alle 22:00. Le temperature a CDMX raggiungeranno tra i 30 e i 32 gradi Celsius.
Researchers have found unexpectedly high levels of methylsiloxanes, a class of silicone compounds, present in air samples from cities, rural areas, and forests around the world. The study links much of the pollution to vehicle emissions from engine oil additives. Experts warn that daily human inhalation of these substances may exceed exposure to other known pollutants like PFAS.
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Researchers at the University of Vienna have determined that land releases more than 20 times as many microplastic particles into the atmosphere as the oceans, challenging prior assumptions. Their study, published in Nature, used global measurements to correct overestimated emission models. The findings highlight land as the dominant source, though uncertainties persist.
Atmospheric methane concentrations rose at an unprecedented rate in the early 2020s, driven by a weakened natural removal process and increased emissions from wetter landscapes. Scientists attribute much of the spike to a drop in hydroxyl radicals during 2020-2021, combined with climate-driven boosts from wetlands and agriculture. The findings underscore the interplay between atmospheric chemistry and weather patterns in global greenhouse gas trends.
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Delhi's average air quality index (AQI) in January 2026 so far stands at 307, marking the second-best January air quality in five years. According to a CREA report, the month has seen two moderate days, 12 poor days, 14 very poor days, and two severe days. The data is sourced from the Central Pollution Control Board.
A month after December's severe smog crisis, Delhi-NCR faces another intense cold wave with dense fog and very poor air quality on January 6, 2026. Noida schools are closed to protect students, while authorities issue health advisories amid ongoing winter hazards.
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Delhi remains under a cold wave with dense fog and 'poor' air quality for a second day on January 5, prompting airline warnings for flight delays. The IMD forecasts a 2-3°C drop in minimum temperatures across northwest India over the next four days.
Scientists detect airborne MCCPs in Oklahoma for first time
13 marzo 2026 13:07Autoridades pronostican hasta 15 días de doble Hoy No Circula por olas de calor en el Valle de México
11 marzo 2026 05:23Johannesburg faces return of sulphur odour amid pollution concerns
19 febbraio 2026 19:38Programma Hoy No Circula opera normalmente il 20 febbraio a CDMX e Edomex
17 febbraio 2026 16:40Contingenza aerea sospesa a Città del Messico e Edomex
27 gennaio 2026 17:06Delhi sees wettest January in four years with increased chill
24 gennaio 2026 17:50Delhi's AQI reaches moderate level after rain and winds
13 gennaio 2026 11:36Scientists find vast amounts of plastic particles in urban air
12 gennaio 2026 20:46North China farmers pay heavy price for Beijing's clean air success
09 gennaio 2026 18:54Miglioramento della qualità dell'aria sospende contingenza ambientale a CDMX e Edomex