Nature | This study demonstrates that relative humidity significantly inflates PM2.5 readings from low-cost sensors, with drying reducing reported concentrations by 25–40% in Brisbane. By developing a real-time RH correction factor using paired sensors and an aerosol dryer, the researchers improved the accuracy of sensor networks for reliable air quality monitoring.

London Datastore – Greater London Authority | London boroughs monitor air pollution using passive diffusion tubes to measure monthly average nitrogen dioxide (NO₂) concentrations at selected sites, supplementing more precise reference analysers. While the Greater London Authority (GLA) compiles this data into a single spreadsheet, comparisons between boroughs are limited by differences in monitoring site selection.

World Bank | Air pollution is now the leading cause of death and disability in Nepal, costing the country over 6% of its GDP annually and reducing average life expectancy by 3.4 years, according to a new World Bank report. The study calls for urgent cross-sector reforms—including electrifying transport, modernizing industry, and curbing household and forest fire emissions—while emphasizing regional cooperation to address transboundary pollution across the Indo-Gangetic Plain.

Newsweek | Elon Musk’s xAI is facing a potential Clean Air Act lawsuit from the NAACP and Southern Environmental Law Center, which claim the company illegally operates dozens of unpermitted gas turbines at its Memphis-based Colossus AI data center, polluting nearby majority-Black communities. While xAI insists it complies with all regulations, environmental advocates argue the turbines emit hazardous pollutants like nitrogen oxides and formaldehyde, worsening health risks in an already overburdened area.

Nature | A review of 25 studies from 2002 to 2024 highlights the utility of intake fraction (iF) in evaluating exposure to traffic-related air pollution (TRAP), revealing that urban TRAP sources result in significantly higher iF values compared to stationary sources like power plants. The study recommends advancing iF calculations with high-resolution and mobility data, and expanding research to underserved regions and pollutant types such as ultrafine particles and secondary emissions.

AP News | The NAACP and Southern Environmental Law Center have issued a 60-day notice of intent to sue Elon Musk’s xAI over alleged Clean Air Act violations tied to unpermitted turbine use at a Memphis supercomputing facility near majority-Black neighborhoods. Critics cite health risks, lack of transparency, and environmental injustice, while xAI defends its legal compliance, economic investments, and plans to cut emissions.

Newsweek | Air quality alerts were issued Tuesday for parts of Michigan, New Mexico, Missouri, Illinois, and California due to hazardous conditions from wildfire smoke, ozone pollution, and windblown dust. Vulnerable groups were urged to stay indoors as authorities advised residents to limit driving, avoid outdoor exertion, and reduce pollution-generating activities.

Nature | This study demonstrates that relative humidity significantly inflates PM2.5 readings from low-cost sensors, with drying reducing reported concentrations by 25–40% in Brisbane. By developing a real-time RH correction factor using paired sensors and an aerosol dryer, the researchers improved the accuracy of sensor networks for reliable air quality monitoring.

London Datastore – Greater London Authority | London boroughs monitor air pollution using passive diffusion tubes to measure monthly average nitrogen dioxide (NO₂) concentrations at selected sites, supplementing more precise reference analysers. While the Greater London Authority (GLA) compiles this data into a single spreadsheet, comparisons between boroughs are limited by differences in monitoring site selection.

World Bank | Air pollution is now the leading cause of death and disability in Nepal, costing the country over 6% of its GDP annually and reducing average life expectancy by 3.4 years, according to a new World Bank report. The study calls for urgent cross-sector reforms—including electrifying transport, modernizing industry, and curbing household and forest fire emissions—while emphasizing regional cooperation to address transboundary pollution across the Indo-Gangetic Plain.

Newsweek | Elon Musk’s xAI is facing a potential Clean Air Act lawsuit from the NAACP and Southern Environmental Law Center, which claim the company illegally operates dozens of unpermitted gas turbines at its Memphis-based Colossus AI data center, polluting nearby majority-Black communities. While xAI insists it complies with all regulations, environmental advocates argue the turbines emit hazardous pollutants like nitrogen oxides and formaldehyde, worsening health risks in an already overburdened area.

Nature | A review of 25 studies from 2002 to 2024 highlights the utility of intake fraction (iF) in evaluating exposure to traffic-related air pollution (TRAP), revealing that urban TRAP sources result in significantly higher iF values compared to stationary sources like power plants. The study recommends advancing iF calculations with high-resolution and mobility data, and expanding research to underserved regions and pollutant types such as ultrafine particles and secondary emissions.

AP News | The NAACP and Southern Environmental Law Center have issued a 60-day notice of intent to sue Elon Musk’s xAI over alleged Clean Air Act violations tied to unpermitted turbine use at a Memphis supercomputing facility near majority-Black neighborhoods. Critics cite health risks, lack of transparency, and environmental injustice, while xAI defends its legal compliance, economic investments, and plans to cut emissions.

Newsweek | Air quality alerts were issued Tuesday for parts of Michigan, New Mexico, Missouri, Illinois, and California due to hazardous conditions from wildfire smoke, ozone pollution, and windblown dust. Vulnerable groups were urged to stay indoors as authorities advised residents to limit driving, avoid outdoor exertion, and reduce pollution-generating activities.