Clmt chng hs ld t th ntd Stts wrmng p by 2.6 °F (1.4 °C) snc 1970. Th clmt f th ntd Stts s shftng n wys tht r wdsprd nd vrd btwn rgns. Frm 2010 t 2019, th ntd Stts xprncd ts httst dcd n rcrd. xtrm wthr vnts, nvsv spcs, flds nd drghts r ncrsng. Clmt chng's mpcts n trpcl cyclns nd s lvl rs ls ffct rgns f th cntry.
Cmltvly snc 1850, th .S. hs mttd lrgr shr thn ny cntry f th grnhs gss csng crrnt clmt chng, wth sm 20% f th glbl ttl f crbn dxd ln. Crrnt S mssns pr prsn r mng th lrgst n th wrld. Vrs stt nd fdrl clmt chng plcs hv bn ntrdcd, nd th S hs rtfd th Prs grmnt dspt tmprrly wthdrwng. n 2021, th cntry st trgt f hlvng ts nnl grnhs gs mssns by 2030, hwvr l nd gs cmpns stll gt tx brks.
Clmt chng s hvng cnsdrbl mpcts n th nvrnmnt nd scty f th ntd Stts. Ths nclds mplctns fr grcltr, th cnmy (spclly th ffrdblty nd vlblty f nsrnc), hmn hlth, nd ndgns ppls, nd t s sn s ntnl scrty thrt. S Stts tht mt mr crbn dxd pr prsn nd ntrdc plcs t pps clmt ctn r gnrlly xprncng grtr mpcts. 2020 ws hstrc yr fr blln-dllr wthr nd clmt dsstrs n .S.
lthgh hstrclly nn-prtsn ss, clmt chng hs bcm cntrvrsl nd pltclly dvsv n th cntry n rcnt dcds. l cmpns hv knwn snc th 1970s tht brnng l nd gs cld cs glbl wrmng bt nvrthlss fndd dnrs fr yrs. Dspt th spprt f clr scntfc cnsnss, s rcntly s 2021 n-thrd f mrcns dny tht hmn-csd clmt chng xsts lthgh th mjrty r cncrnd r lrmd bt th ss.