Phoenix weather: Memorial Day forecast; Ozone Health Watch in effect

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By Catherine Holland By Catherine Holland

PHOENIX -- Mother Nature brought a cool treat to Arizonans over Memorial weekend, but on Monday temperatures are forecast to warm back up. 

Long gone are the 80s of Saturday and Sunday as the deserts of the state are forecast to warm back to the mid 90s on Memorial Day.  Look for a high of 95 degrees in the Valley under abundant sunshine, with highs in the 60s and 70s in the high country.  

Valley lows tonight will again dip to the 60s under clear skies. 

Tomorrow, Valley temperatures will warm to the upper 90s and by Friday, we'll be near 108 as a ridge of high pressure strengthens over the Southwest. 

Some relief from the heat looks likely for next weekend, but no rain is in sight. 

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An Ozone Health Watch is in effect for the Valley today, and it is likely to be upgraded to a High Pollution Advisory tomorrow as ozone levels are forecast to rise even higher. 

Everyone is encouraged to carpool and fill up their vehicles after dark.  People with asthma or sensitive respiratory systems are advised to limit their time outdoors the next few days. 

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