Canada is experiencing over 900 active wildfires, scorching 3 million hectares, with significant concerns in the Northwest Territories and Ontario, causing poor air quality extending to Europe. Concurrently, Salta, Argentina, recorded its warmest-ever winter night at 26C, driven by the Zonda wind and potentially influenced by El Niño.
Canadian wildfires caused severe air quality issues in over 20 US states, prompting former President Trump to demand Canada pay damages. Canadian PM Carney linked the fires to climate change, while some US politicians proposed sanctions against Canada.
Chicago's outdoor air quality has improved significantly after Canadian wildfire smoke, but experts warn indoor air may still contain harmful particles. Alertify data showed high indoor PM2.5 levels, as common AC systems often recirculate smoke without proper filtration, posing health risks, especially for vulnerable groups.
A University at Buffalo study found that wildfire smoke from Canada's record seasons reduced bird sightings in New York State during breeding seasons (2021-2023). Researchers suggest birds changed behavior, becoming harder to spot, rather than declining in numbers, highlighting an overlooked impact on wildlife monitoring.
Canadian officials in British Columbia issued air quality warnings due to smoke from US wildfires in Washington and Oregon drifting north. This follows US cities being affected by Canadian wildfire smoke, leading to political tensions and tariff threats from Donald Trump.
President Donald Trump on Friday criticized Canada for wildfires causing smoky haze and dangerous air quality in U.S. cities, threatening to add pollution costs to existing tariffs. He accused Ottawa of poor forest maintenance, while Canadian Prime Minister Mark Carney noted the fires' escalation. The EPA also expressed concern.
The northeastern US faces severe thunderstorms and flash flooding, compounded by Canadian wildfire smoke in NYC. Meanwhile, Texas continues to battle destructive floods, with two deaths and hundreds rescued, as major rivers are expected to surge, following weeks of relentless downpours.
World Cup organizers are closely monitoring hazardous smoke from Canadian wildfires affecting parts of the US, including New Jersey, ahead of the tournament's final. Health officials warn against outdoor practice for athletes, though Spain trained outdoors, while Argentina practiced in Atlanta, which was unaffected.
Wildfire smoke from Ontario and Minnesota affects US mid-Atlantic, northeast, Midwest, and Great Lakes, causing poor air quality, health concerns, and event disruptions, with some relief possible by Sunday.
Delhi's air quality reached the 'good' category (AQI 48) for the first time in almost three years, thanks to monsoon rains washing away pollutants. While a positive sign, experts emphasize the need for year-round emission reduction to combat the city's persistent pollution challenges.
Delhi received its most intense monsoon rainfall on Tuesday, causing waterlogging, traffic disruptions, and flight delays. Several areas recorded heavy showers, with Najafgarh logging 84mm. Rain is expected to continue until Saturday, with a yellow alert issued for Wednesday and Thursday.
Washington D.C. experienced the world's worst air quality on Sunday following a massive July 4th fireworks display. Authorities issued a 'Code Red' alert, advising vulnerable groups to stay indoors. Hundreds required medical assistance during the event.
A warehouse fire in Boyle Heights, Los Angeles, caused air pollution levels exceeding those of the January 2025 wildfires. Fine particle levels reached 755 micrograms per cubic meter, surpassing wildfire levels. While toxic metals weren't elevated, bromine and chlorine were detected, and concerns remain about decomposing food.
Delhi government has officially notified the Delhi Electric Vehicles Policy 2026, effective July 1, 2026, until March 31, 2030. The policy aims to boost EV adoption with tax exemptions, subsidies for two and three-wheelers, and a Rs 15,000 crore investment for charging infrastructure.
A UK company, VolcanoTech, has developed a low-cost air quality sensor using a modified smartphone camera and Raspberry Pi. These sensors detect sulphur dioxide, a key indicator of imminent volcanic eruptions, and are being deployed in countries like Ecuador and Indonesia, offering a cheaper alternative to existing systems.
Analysis of health records shows emergency hospital admissions in central London decreased by 3% per year after the introduction of the T-charge and Ultra Low Emission Zone (Ulez), with significant reductions in heart and breathing problem admissions.
The Pentagon resumed normal operations Thursday after a lockdown due to an "air quality issue." Hazmat teams responded, and parts of the building were locked down and some people evacuated. Subsequent testing confirmed no hazard, with sources suggesting a malfunctioning sensor detected possible anthrax.
The Pentagon issued a shelter-in-place order due to a detected air quality issue, prompting a hazardous materials investigation. Firefighters and a Hazmat Team responded, but subsequent testing confirmed no hazard, and normal operations have resumed.
The Pentagon was placed on lockdown Thursday due to an "air quality issue" that may have been a false alarm. Hazmat teams responded, and a shelter-in-place order was issued for the affected area, with some evacuations occurring.
Firefighters are investigating a hazardous materials incident at the Pentagon, prompting a shelter-in-place order for the affected area. Pentagon spokesman Sean Parnell stated that sophisticated safety systems detected an air quality issue requiring precautionary measures.
Employees in specific areas of the Pentagon were instructed to shelter in place on Thursday following the detection of an air quality issue by building systems. Hazmat teams are on-site, and precautionary measures are being taken.
Xinjiang's Changji Prefecture reported a record 325 days of good or excellent air quality in 2025, surpassing 300 days for the first time. PM2.5 concentration decreased by 3.6% to 27µg/m3.
Delhi experienced isolated heatwave conditions on Sunday, with temperatures reaching up to 44.6°C. Dust intrusion from Pakistan may affect air quality. Light rain and gusty winds are forecast for Monday, but significant relief is not expected until Friday when temperatures could drop to 35-37°C.
A thunderstorm with wind speeds up to 81 kmph hit Delhi on Saturday, offering temporary relief from the heat. However, temperatures are forecast to rise again, with heatwave conditions expected from Sunday, reaching 43-45 degrees Celsius.
