經初步測算，2023年重慶空氣質量優良(liang)天(tian)(tian)(tian)(tian)數(shu)達(da)325天(tian)(tian)(tian)(tian)（優121天(tian)(tian)(tian)(tian)，良(liang)204天(tian)(tian)(tian)(tian)，輕度(du)(du)(du)污染(ran)33天(tian)(tian)(tian)(tian)，中度(du)(du)(du)污染(ran)7天(tian)(tian)(tian)(tian)，重度(du)(du)(du)污染(ran)0天(tian)(tian)(tian)(tian)），2020年以(yi)來連續4年穩定在320天(tian)(tian)(tian)(tian)以(yi)上，2018年以(yi)來連續6年無重污染(ran)天(tian)(tian)(tian)(tian)。其中，3月、8月、10月優良(liang)率(lv)為100%，1月超(chao)標(biao)(biao)14天(tian)(tian)(tian)(tian)，12月超(chao)標(biao)(biao)10天(tian)(tian)(tian)(tian)，2月超(chao)標(biao)(biao)6天(tian)(tian)(tian)(tian)，4月、7月、9月、11月各超(chao)標(biao)(biao)2天(tian)(tian)(tian)(tian)，5月和6月超(chao)標(biao)(biao)1天(tian)(tian)(tian)(tian)，冬春季(ji)均為細顆粒(li)物（PM2.5）濃(nong)度(du)(du)(du)超(chao)標(biao)(biao)，夏秋季(ji)均為臭氧（O3）濃(nong)度(du)(du)(du)超(chao)標(biao)(biao)。

在(zai)具(ju)體(ti)區(qu)(qu)縣(xian)(xian)方面，1—12月重(zhong)點區(qu)(qu)域(yu)(yu)優良天數排名(ming)前5位(wei)的是：黔江區(qu)(qu)、武隆區(qu)(qu)、萬盛經開(kai)區(qu)(qu)、梁平區(qu)(qu)、萬州區(qu)(qu)；排名(ming)后5位(wei)的是：渝中區(qu)(qu)、合川(chuan)區(qu)(qu)、大渡口(kou)區(qu)(qu)、江北區(qu)(qu)、南岸區(qu)(qu)。一般區(qu)(qu)域(yu)(yu)優良天數排名(ming)前3位(wei)的是：酉陽縣(xian)(xian)、城口(kou)縣(xian)(xian)、奉節縣(xian)(xian)；排名(ming)后3位(wei)的是：墊江縣(xian)(xian)、豐都縣(xian)(xian)、巫溪縣(xian)(xian)。