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PM2.5

Joe Moore / Valley Public Radio

It was only a few weeks ago that wildfires drove particle pollution to dangerously high levels in many parts of the San Joaquin Valley and mountain areas, and it could happen again before wildfire season is over. Particulate matter, also known as PM, is a major health risk: It’s known to cause asthma attacks and other respiratory flare-ups in the short term, and exposure over the long term has been associated with reduced immune function and cardiovascular problems.

A much-anticipated plan to reduce particulate matter in the San Joaquin Valley is now up for public comment.

After years of revisions, the San Joaquin Valley Air Pollution Control District is seeking public comment on its latest plan to reduce PM2.5, a harmful pollutant that causes respiratory problems and is increasingly being linked to other serious health conditions.

Kerry Klein / Valley Public Radio

When buying a house, everyone’s motivation is different—maybe it’s the desire to start a family, or to start a new job in a new city. Today, we report on a people who move out of the Valley for an entirely different reason—one that’s related to the Valley’s ozone concentrations, which have been creeping higher as the temperature has risen.

Judy Eymann-Taylor is packing. She picks up a gold picture frame leaning against a wall and gingerly cushions it in bubble wrap. “This is a photo that's almost 40 years old now,” she says.

Kerry Klein / Valley Public Radio

We’ve been reporting a lot these last few weeks about PurpleAir, a new brand of low-cost, wifi-enabled air monitors that are enabling concerned citizens across the world to crowd-source air quality data. After speaking with public agencies, academics and advocacy groups about the promise of these devices, we were curious: Who created PurpleAir, and how did its product become so popular?

Ian Faloona, UC Davis

 

When you hear about air pollution, you may think of vehicle emissions, industrial smokestacks and wood burning. But a new study reveals another major source right below your feet in the Central Valley.

The pollutants in question are nitrogen oxides, a family of harmful gases known collectively as NOx. They’re precursors to ozone and particulate matter, which can lead to a litany of short and long-term health problems.

Kerry Klein / Valley Public Radio

In this age of smart homes and electronic assistants, your appliances can now order refills automatically and you can manage your home security system using an app. But can the so-called “internet of things” be used to solve community problems? Some San Joaquin Valley residents think so: They're trying to address one of the region’s perennial public health problems with a new low-cost device.

Sarah Sharpe / CHAPS

Last week, we brought you a report about the San Joaquin Valley’s recent bout of smoggy air, which in Bakersfield was the longest consecutive episode of unhealthy PM2.5 levels in decades.

San Joaquin Valley Air Pollution Control District

If you spent time in the San Joaquin Valley over the holidays, the recent rain probably has you breathing a sigh of relief—not just because it’s bringing much needed rain and snow, but also because it’s the first time in weeks you can safely breathe. This story looks back at one of the most severe periods of smoggy air in decades.

When James Collins isn’t studying social work at Fresno State, he drives for the rideshare company Lyft. He sees a lot of open sky and bright sun.

Joe Moore / Valley Public Radio

Now that the storm front earlier this week cleaned up the air for much of the San Joaquin Valley, many residents may be looking forward to lighting up their wood-burning fireplaces. However, you might be surprised to learn that some burning was allowed even as air pollution reached dangerously unhealthy levels.

K. West / California National Primate Research Center

A new study suggests that exposure to wildfire smoke can result in reduced immune system function. The study, funded by the California Air Resources board, looked at primates which were exposed to unusually high levels of fine particulate matter or PM2.5 for 10 days in 2008, during a number of wildfires.