Air quality turned moderate Friday as particles were trapped near the ground, while weekend heat raised ozone risk. The temporary preventive alert called for extra care by children and people with respiratory conditions.
The first Atmosphere Watch examines air pollution during the first eight months of 2026. Nearly 40% of the world's population was exposed to ozone levels classified as extremely high in the analysis.
Rain and thunderstorms on September 26 triggered a yellow alert in several districts. The daily AQI was 72, in the satisfactory category, while the monsoon season closed at 728.6 mm, 16% above average.
Palangkaraya recorded an AQI of 780 and Pontianak 593 in point-in-time IQAir readings on August 31. More than five million people were exposed to haze across Borneo and Sumatra as Indonesia strengthens firefighting, water management and restoration with Japanese support.
Resolution 1070 temporarily suspended controlled open burning across Colombia's rural territory. The measure responds to El Niño, 539 municipalities under alerts and 600 fires that had affected 14,872 hectares by 15 August.
The 3 p.m. report on 23 August classified air quality in the Valley of Mexico as poor and the health risk as high. Iztapalapa and Nezahualcóyotl posted the worst readings, while five stations provided no data.
The 10 August emission forced flight operations to stop while the volcano was under orange alert. Colombia's Geological Service reported rising seismic energy and hotter gas and ash emissions, but ruled out a direct link to the earthquake that day.
Paraná's capital will be the first city in southern Brazil to trial the Google-linked network. Sensors will operate at the Pinheiros Health Unit and five other urban sites, recording air quality and weather variables in real time.
Monitoring on August 2 reported PM2.5 at 7 µg/m³ and PM10 at 21 µg/m³, with ICAP scores of 14 and 16. The daily snapshot was favorable, but local readings must be distinguished from restrictions applying in other Chilean jurisdictions.
Smoke from more than 180 active fires in northern Ontario blankets the United States, triggering air quality alerts in more than 20 states. Chicago, Detroit and Minneapolis top global pollution rankings, as authorities urge people to stay indoors and take precautions in what could be the most significant smoke event since 2023.
Wildfire smoke and pollution indexes show again that public health, urban planning and climate action have become central variables in organizing major sporting events.