Jiang has worked at WCBS since 2012 as a Reporter and fill-in anchor. Before that she worked at WJZ in Baltimore, WBOZ in Salisbury, Maryland and WBRE in Scranton, Pennsylvania.
Jiang is the daughter of Liya Wei and Huade Jiang.
Her parents, who are retired, owned and operated Chinatown Restaurant in Buckhannon, West Virginia.
A year after they met, while still remaining friends, they began co-hosting a weekly campus television show.
They became close friends, and Lowe was determined to someday become Jiang's boyfriend.
He finally succeeded in 2015, soon after a fortune teller at a New York City street fair had predicted they were destined to spend eternity together.
Jiang and Lowe got married on March 17, 2018, at Casa de Monte Vista, an events space in Palm Springs, California. Jim Obergefell was the deputy commissioner for the marriage in Riverside County, California. He incorporated a Chinese tea ceremony into the service.
Jiang graduated from The College of William and Mary in 2005 with a bachelor’s degree in philosophy and a minor in Chemistry.
Trump abruptly ends briefing after confrontation with reporter
’Keep your voice down’: Trump berates female reporter when questioned over Covid-19 response
On March 27, 2020, shortly after Trump sent another “Chinese virus” tweet, Jiang told her Twitter followers that an unnamed White House official had dialed up the Racism. “This morning a White House official referred to #Coronavirus as the “Kung-Flu” to my face,” Jiang wrote, adding “Makes me wonder what they’re calling it behind my back.”
Arguments with Donald Trump
On April 19, 2020, at one of the White House's COVID-19 briefings, Jiang questioned why the president held events in February with large gatherings despite the virus “spreading like wildfire during [that month].” Trump used his China ban as support for his action against the virus. The clip of them going back and forth when it started to get heated and Trump told Jiang to "relax," to "keep her voice down," and that she "should be thanking [him] for [his] good judgement."
On May 11, 2020, Weijia Jiang asked Trump why his administration was touting its coronavirus testing numbers and comparing it to other countries.
She asked the question during a White House press conference Monday afternoon at the Rose Garden where Trump spoke in front of a large sign that said "AMERICA LEADS THE WORLD IN TESTING" and gave a glowing assessment on the country's efforts to test its citizens for the coronavirus.
Trump, who previously had heated exchanges with Jiang during press conferences, suggested Jiang ask the other countries, namely China.
The Communist Party of China has been accused of distorting the number of coronavirus-related cases and deaths in the country, and allegedly downplayed concerns during its early stages in late 2019, prior to it becoming a Pandemic. 
"I'm not saying it specifically to anybody," Trump said.
"I'm saying it to anybody that would ask a nasty question like that."
Trump ignored the comment and appeared to call on CNN White House correspondent Kaitlan Collins, who was seated nearby Jiang.
Trump disputed the suggestion and tried calling on a different journalist.
All of the press members were wearing face masks after the White House issued new guidance on safety measures.
Confrontation with Kayleigh McEnany
During a June 22, 2020 White House press conference, Jiang and Kayleigh McEnany had a back and forth argument over the terms Donald Trump has used to describe coronavirus. "Last July, President Trump declared himself the least racist person there is anywhere in the world," Jiang asked. "Why does he use racist phrases like 'Kung flu?'" "The president doesn't," McEnany shot back. "The president points to the fact that the origin of the virus is China. It's a fair thing to point out as China tried to ridiculously rewrite history, ridiculously blame the coronavirus on American soldiers. This is what China is trying to do." "That's what he's saying by using the racist phrase 'Kung flu?'" Jiang asked. When McEnany referenced the place of the virus' origin, Jiang reiterated, "What does he have to say to Asian Americans who are deeply offended and worry his use will lead to further attacks of discrimination?"  
McEnany continued to deflect, blaming the Chinese government before calling out specific media organizations for their usage of the "Chinese virus."
"The media blames President Trump for using the terms 'China virus' and 'Wuhan virus' when they themselves have used these terms," she said, before calling out The New York Times, Reuters, and other media organizations. 
"To be clear, are you saying the White House does not believe it's racist?" Jiang pressed again.
"To be clear I think the media is trying to play games with the terminology of this virus with focus should be on the fact that China left us out of our country," McEnany responded.
As of July 2020, Jiang has about 356,000 followers on her weijia Twitter account. She posts and comments on current political events.