All mega cities in India, including Kolkata, Bengaluru, Mumbai, Hyderabad and Chennai, saw high concentration of ground-level ...

In Kolkata, ozone levels crossed the safe limit on 22 out of 92 days, a 45% decline compared to last summer. The city also saw an overall improvement, with the average hourly ozone peak dropping ...

An air quality alert was issued by the National Weather Service in Milwaukee-Sullivan at 9:26 a.m. on Wednesday, July 16.

All mega cities in India, including Kolkata, Bengaluru, Mumbai, Hyderabad and Chennai, saw high concentration of ground-level ozone pollution this summer season, according to a new analysis by think ...

With more than six million people living in just those four cities alone and an additional 9.5 million in NYC, OKC, and ...

Kolkata, Bengaluru, Mumbai, Hyderabad, and Chennai—are grappling with dangerously high levels of ground-level ozone, according to a report released here today by the Delhi-based think tank Centre for ...

Canadian wildfire smoke remains in Michigan. On July 16, officials issued an air quality advisory for western counties.

Air quality in the Chicago area has remained poor for three days in a row, the NBC 5 Storm Team reported Wednesday morning.

The National Weather Service has issued both a heat and air quality alert for most of downstate New York, Wednesday, July 16.

Millions of Americans across nine states were urged to avoid driving and limit outdoor activities on Wednesday as air quality ...

PM2.5 pollution is spiking in many counties in Utah and is accompanied by the typical summer pollutant of ozone. It makes for a nasty mix of pollution.

Thousands of people across one state were told to go inside if they start experiencing respiratory symptoms such as coughing.