JAMAICA, Queens (WABC) -- About 600 customers remained without power in New York City Sunday amid the sweltering heat wave.[br /][br /]Most of those were in Jamaica, Queens, where store owners on Parsons Boulevard said the power went out about 1 p.m. Saturday.[br /][Ads /][br /]Con Edison crews were busy trying to restore power to the affected areas.[br /][br /]For those needing a place to escape the oppressive conditions, the Office of Emergency Management has opened cooling centers throughout the city.[br /][br /]"We want everyone to remember the basics here," said Mayor Bill de Blasio. "Drink lots of water, don't go in the sun. It's a real simple thing, stay out of the sun. If you've got to be outside, stay in the shade. This is the worst heat we've seen in a decade, it's really bad."[br /]There were long lines at city pools Saturday as New Yorkers sought relief from the heat.[br /][br /]The pools have had extended hours this weekend and will be open until 8 p.m. Sunday.[br /][br /]With record- or near-record-high temperatures at night, when many air-conditioned places are closed, the weather can become especially dangerous for people who don't get a chance to cool down, experts say.[br /][br /]The risks are greater for young children, the elderly and the sick.[br /][br /]The [url HREF="https://abc7ny.com/weather/accuweather-alert-sweltering-heat-humidity-continues-into-sunday/27410/" TARGET="" REL="https://abc7ny.com/weather/accuweather-alert-sweltering-heat-humidity-continues-into-sunday/27410/"]heat wave [/url] is expected to last one more day before relief arrives on Monday.[br /][br /]b]RELATED:[/b] [url HREF="https://abc7ny.com/weather/accuweather-forecast-sizzling-stretch-continues-/27410/" TARGET="" REL=""]7-Day AccuWeather Forecast[/url][br /][Ads /][br /][b]HEAT WAVE ALERT:[/b] [url HREF="https://abc7ny.com/weather/its-hot-tips-and-resources-for-coping-with-extreme-heat/1415550/" TARGET="" REL=""]Resources to help you cope with the heat[/url][br /][br /][b]BEATING THE HEAT[/b][br /][li][url HREF="https://abc7ny.com/weather/these-tips-can-help-prevent-heat-related-incidents-/1435751/" TARGET="" REL=""]Tips to stay safe during the hot summer months[/url][/li][br /][li][url HREF="https://abc7ny.com/weather/heat-stroke-vs-heat-exhaustion-what-are-the-symptoms/5320281/" TARGET="" REL=""]Heat stroke vs heat exhaustion: What's the difference and what are the symptoms? 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[/url][br /][url HREF="https://abc7ny.com/weather/can-you-bake-cookies-in-a-hot-car/1418040/" TARGET="" REL=""]We baked cookies inside a parked car just to prove how hot the inside of a car really is [/url][br /][url HREF="https://abc7ny.com/weather/hot-weather-can-make-you-more-angry-aggressive/3613777/" TARGET="" REL=""]Heat hypothesis: The link between summer weather and aggressive behavior[/url][br /][br /]----------[br /]* [b][url HREF="https://abc7ny.com/queens/" TARGET="" REL=""]More Queens news[/url][/b][br /]* [b][url HREF="https://7ny.tv/submitnewstip" TARGET="" REL=""]Send us a news tip[/url][/b][br /]* [b][url HREF="https://abc7ny.com/apps/" TARGET="" REL=""]Download the abc7NY app for breaking news alerts[/url][/b] [br /]*[b][url HREF="https://www.youtube.com/channel/UCrlIS7z20CnVaCrMvdkig_g" TARGET="" REL=""] Follow us on YouTube[/url][/b]