Chemicals. The chemicals which are invisz bl gi invisible get into the air and can trigger asthma attacks. Reporter the south bay allergy and asthma group says more patients are coming in with significant problems, coughing, breathing, even sleeps at night. People dont realize its the air quality thats triggering their symptoms. I see weve had probably a 25 increase over the last two weeks. Reporter we actually spoke with other allergists as well. I talked to dr. Robert terono earlier today after the aller swri and Asthma Associates of Northern California and he, too, is seeing an uptick in business the last couple weeks and has advice for folks if theyre concerned about whether or not theyre going to continue to experience the asthmatic symptoms, stay inside altogether or take preventative medicines. Reporting live from downtown san jose, sam brock, back to you in the studio. Lets check in with rob mayeda. When might we see a change in the air quality . We need the winds to come up and the storms to come back to the bay area. This is the pattern off and on the last six weeks. High pressure acting like a lid, cool air below, warm air on top. Thats the temperature inversion which traps smoke particle pollution and the pollution youre breathing in is much smaller than the width of a human hair. Very tiny micronsized particles that get into your lungs. 21 days now running in a typical spare the air winter. Four months of time. You might see ten. Unusually dry and very stable pattern weve seen so far from november to december, only halfway through the season, we hit our 21st day and could hit our 22nd toward sunday. Tomorrow another spare the air day. Sunday, looks like right now we could still see unhealthy for sensitive groups. Monday, tuesday, may see changes. Expecting winds to pick up. You saw the clouds outside today. The high clouds moving through the bay area. They made us the fantastic sunset we saw earlier. As the clouds move on, this we think will lead to better air quality as we approach the second half of the weekend. Well talk about that in the full forecast coming up. Thank you, rob. Track the weather on our website, nbcbayarea. Com. Just click on the weather tab. There you will be able to see the sevenday forecast for your neighborhood. Now to a developing story. Heated words between an east bay hospital and attorney for jahi mcmath. Within the last hour the family cleared a key hurdle in the push to move the brain dead teen to another facility. Nbc bay areas Kimberly Terry has tracked the unfolding g ini developments all day and joins us live from Childrens Hospital with the very latest. Reporter jessica, both sides have called the situation frustrating and over the course of today, exchanges between the familys attorney and the hospitals spokesperson have become increasingly heated and it seems both sides think they are doing what is in the best interest of the family. I will not represent them in any legal action reporter today an attorney for the mcmath family and a hospital spokesperson ended up in a Heated Exchange in front of Childrens Hospital. The familys attorney accuses childrens of playing games and keeping jahi from being moved to another facility. While the hospital spokesperson is accusing the attorney of giving a grieving family false hope that jahi will recover. This becomes at a certain point a very sad thing for the attorney to perpetuate a myth that jahi mcmath will get better. She unfortunately wont. Shes dead. Reporter 13yearold jahi has been on a ventilator for more than two weeks now. On december 9th she went into the hospital to have her tonsils removed. Jahi suffered severe complications after that procedure and ultimately declared brain dead three days later. Since then the family has been fighting to keep the child on life support. Unless there is another court order that prolongs this very sad and tragic situation, jahi mcmaths body will be taken off the ventilator at 5 00 p. M. On monday. Theyre playing a timetable game with us. So we need to buy more time then well have to go to court and buy time. Were going to have to do this by any means necessary. Reporter the family and the attorney are looking for a longterm care facility willing to take in jahi and fighting to allow an outside physician access to jahi to perform two procedures that could be necessary before she can be moved. Everyone were talking to, were giving full information, to the effect that jahi has been declared brain dead. Some of the facilities are catholic facilities and have a very different perspective on what life and death are. So a judicial determination of brain dead is not seen by everyone as being no hope or pull the plug. The family has to find the physician, they have to find the facility. They have to prove to us as well as the court that there is such a physician, as well as such a facility that will take a deceased person on a ventilator. Reporter in a letter to the mcmath family, the hospital outlined three requirements in order for jahi to be moved. One of those has already been met. Late today, the Alameda County coroner said their office will not block any transfer to another facility. Childrens also wants direct contact with the new facility to discuss what needs to be done before they move jahi. Familys attorney had previously said he wouldnt identify the facility because he didnt want anyone to try to interfere with the process. Hospital officials also want specific details on exactly how jahi would be transferred to the new facility. Tonight we are also hearing a National Catholic organization may be attempting to raise money to move jahi to a facility back east. Live in oakland, Kimberly Terry, nbc bay area news. Thank you, kimberly. Happening now, ac transit workers have an hour left to cast a vote on a new contract. The roughly 1,700 members of amalgamated Transit Union local 192 are voting on a tentative deal reached last friday. Ac transit has been negotiating with its union since march and two previous deals were voted down. Workers also threatened to strike in october when the governor stepped in and issued a 6 f 0 day cooling off period which expired on sunday. Polls close at 7 00. The result of the vote expected to be announced later tonight. The new year means a price hike for people who used b. A. R. T. Or muni. The average b. A. R. T. Fare will increase 19 cents, first in a series of scheduled fare hikes that aim to raise 325 million for new frtrain cars and other improvements for b. A. R. T. Muni passengers, the price of a oneday passport will go up to 15 and covers cable cars, as well as muni trolleys and buses. What charges will he face . San jose prosecutors are considering the final charges, filed against the man suspected of speeding his car into a downtown crowd next weekend near the intersection of third and santa clara as nightclubs were clo closing. 23yearold Christopher Atkins drove backward into a crowd of people. Three people were treated for moderate injuries. Police had to call for backup to subdue the crowd. He was booked into jail for assault with a deadly weapon, that weapon being his car. It took more than a month, but San Francisco investigators say theyve finally identified a body found in the water near mccovey today. Today the medical Examiners Office said it is the body of a missing 22yearold paulo netto visiting San Francisco from los angeles when he vanished in november. Just before disappearing he made a frantic call to relatives in brazil saying he was in trouble and needed help. Police say theyre waiting on the results of an autopsy before determining the cause of death. Frantic search for a missing veteran in San Francisco ended with good news. 30yearold Derek William contacted police today to let them know he was okay. He disappeared ten days ago after he was discharged from sf general. Former navy sea man has been a regular volunteer at events like hurricane sandy. Family and friends used their own search and rescue skills combing through the city. He called police today after seeing his photograph on tv. We had people out on the streets. It was the media. He saw the broadcast last night. And so thats what did it. The family isnt revealing where sell was staying or why he had not contacted them before. He told police hed like his privacy. His father says hes relieved just to know hes safe. Well, hes once considered one of the best defensive players in all of football. And just a few short years later asomugha is retiring. Comcast sportsnets jim kozimor has the latest on the announcement today. Hello, jim. Hi, diane. After 11 seasons in the National Football league, asomugha officially announcing his retirement today and he did so at raiders headquarters ending his career where it began. Asomugha earned allpro honors in 2008 and 2010 and was selected to the pro bowl in three of his eight seasons with the silver and black. There is little dispute for the former firstround pick out of cal. Had some of his best years coming for the team he grew up watching. You know, growing up in los angeles, the raiders at the time i was there, that was the team you wanted to be associated with. Growing up, we had the raiders and the rams down there in l. A. , but, in all my friends and everybody we knew, we were associated with the raiders. Being able to put on the uniform, which i still think is the best uniform in the nfl, you know, being able to put it on and go out into the stadium and, you know, amongst the cheers and all that, its a great feeling. Life happens. You know . You start getting these feelings like i think its time and i know people always told me once you start feeling that way and start thinking that it might be time, you really need to sit down because its about time. Well have more on asomughas retirement including one of the premiere National Football league voices on why he might be regretting one of the biggest career decisions he ever made. Thats coming up later on in sports. That will do it for now. Guys, back to you. All right. Thank you very much, jim. Still ahead at 6 00, police hope it will help them solve a crime. Plus where the population is booming. Plus im scott budman. Credit says your credit card data is safe because of its technology, but is that really the case . We look into it, coming up. And a new warning concerning the states new health care exchange. What people who just signed up are being urged to do next. And it looks like the clouds are finally moving on as we approach the weekend forecast. Were going to see temperatures in the mid to upper 60s with winds increasing. Those could be a problem in some of our hilltops with fire danger this weekend. Well talk more about that in the forecast when we come right back. Classaction lawsuits and lots of hand wringing all because of a credit card breach at target during the busiest shopping days of the holiday season. But today target revealed what it called better news for shoppers. Our business and tech reporter, scott budman, it at a target store in san jose with the latest on that for us. Hello, scott. Reporter well, good evening, diane. Target says your credit card information was incrept encrypt protected by technology. Thats the good news. The target story doesnt end there because hackers have technology, too. Target tried to put nervous credit card holders at ease by saying that while the p. I. N. Number shoppers enter when they use credit cards were taken, they were encrypted and, reremain confident p. I. N. Numbers are safe and secure. Isnt encryption disguising data with complicated code completely safe . Experts at Silicon Valley security giant mcafee say no. As the technology has gotten better to increencrypt these, s the technology to decrypt these. Reporter mcafee admits encryption, around for decades, commonly used in stores, makes it harder for data to be stolen. Think of it as a hightech security wall. Its like the decoder ring you had when you were a kid, diyky tracy, that sort of thing. It will slow down the criminals and decode the encryption. Reporter sometimes they can decode the encryption. Well, theres always a risk because they can decode these over time using the right software and enough patience. Reporter which means its still up to us to be individuvi about our credit cards. The best way to do that is stay in touch with your credit card company. You can call them up and find out if anybody else has been using your plastic. Also pay close attention to the statements you get every month. If you see charges on there that arent yours, they will often be absorbed by the credit card company. In san jose, scott budman, nbc bay area news. Thank you, scott. A robbery suspects own could be the key to tracks him down. Today Oakland Police released this selfie of a rob re suspect, this man is one of two people who robbed a woman in august. The victim was walking down the street when two suspects demanded her cell phone, necklace and ran away. Later that day investigators say the suspect used a stolen phone to take a picture of himself. What he didnt know is the phone automatically uploads pictures to the victims computer. If you can identify him, police would like to hear from you. A 16yearold boy has been arrested in connection with a deadly shooting and robbery in San Francisco. Police believe the teenager killed 16yearold clifton chatman on december 15th on alemany boulevard near 280 and investigators think shooter and his victim were accomplices in a robbery. In fact, they believe the bullet that killed chatman was intended for the robbery victim. The teenage suspect faces murder and robbery charges. His name has not been released because of his age. All right. Were getting new details tonight on what police call their holiday enforcement period by the chp. From Christmas Eve to christmas midnight, chp officers increased patrol and set up more checkpoints. Officers report there were five deaths, 222 dui arrests throughout the state during this period. Just looking at the numbers, 100 of these people that were killed this christmas weekend were not belted and thats an astonishing number. We want to make sure we change that and people are buckling up. Highway patrol will be working with other California Law enforcement agencies to increase Driver Safety through new years as well. So as santa says, you better watch out. So there. Lets watch out the weather at this point. Rob, whats going on . Were going to see changes as we two through the weekend. Right now the changes were seeing outside, some clearing now. The north bay, San Francisco, into the east bay, winds picking up a little bit behind this weather system that didnt bring us any rain but sure helped to filter out the sun at times today. Cooler day around the bay area. Right now, winds still somewhat offshore. These are going to turn fairly gusty out of the north by the time we get to saturday night and could lead to issues in bay area hilltops in terms of drying things out and adding to localized fire danger. Tonight lows will hit the 30s and 40s. Down to 4 44 napa. 44 in San Francisco and san jose. The clouds are moving on. The reason we have the gorgeous s sunrise outside. Ice crystals do a nice job of reflecting the sunlight. In the south bay, the clouds will clear out. As we see clear skies overnight headed into tomorrow morning, we will have a chilly start especially in the north bay and parts of the east bay valleys. Well have 30s and 40s. Unlike today. Were going to get sunshine throughout the day tomorrow. Notice the clouds moving in from the north to south. By the time we pass 6 00 tomorrow evening the winds are going to start to pick up a little bit more as we go into some of those hilltop locations by, lets say, sunday morning and through midday sunday afternoon. So our forecast here for your saturday, more sunshine around the south bay. 65 degrees. Closer to san jose. Around the peninsula, pretty close to that, too. Mainly clear skies. Patches of low clouds near the coastline. San francisco, 62 by 2 00. Some of the warmest temperatures should be up in the north bay. Upper 60s as soon as those north winds turn on, that air is going to warm up and dry out as it heads into the lower elevations. Thats going to be the warmest spot around the bay area tomorrow. East bay, 66 degrees. Around oakland. And mid 60s in the tri valley. By the end of the weekend as winds turn more strongly offshore, 70s could be in the forecast, again, for parts of the bay area. Well talk about that and if there are any chances of any rain coming up in the sevenday forecast. Well have a look at that coming up. Still ahead, a controversial figure enters the governors race. The states water supply is at a critical juncture. The next two months could change the future of california. A rescue mission in one of the most remote regions of the world. A new battle is started over the burned trees from this summers massive fire any yosemite. The two month long fire burned 47 square miles and now administrators want to harvest the salvageable wood and sell it before fungus and beetles ruin it. The money from the sale would reportedly be used for repla replanting efforts and offset the cost of fighting the fire but several environmentalists are trying to block the plan. They claim removing the dead trees will make it harder for the forest to recover. Learning the man killed in an aftvalanche is from the bay area, this is picture of 20yearold mike kazanjy. His brother said in a written statement he loved his family, his cal bears, skiing buddies and San Francisco. Authorities say he was skiing with friends outside the boundary of the jackson hole Mountain Resort in an area called pucker face bowl when he set off an avalanche at 1 00 that buried him in the snow. He went to school at uc berkeley and just moved to jackson hole from San Francisco. Well, it appears the rescuers may now need rescuing. Tonight, one ship sent to help break another ship out of thick ice is trapped as well. 4 passengers aboard a russian cruise ship have been stuck in the Antarctic Ice since Christmas Eve, the ship got stuck trying