 The 80s, well into the 80s. Heat index values well into the 90s today. Clouds tonight, some patchy fog too. Low 70s and a mix of clouds and sun for Tuesday afternoon showers. Thunderstorms are possible mid to upper 80s. And again, fairly or very high heat index values approaching 100 on Tuesday. A little bit cooler on eastern Long Island. Ukraine is not part of NATO, but the alliance is expected to soon open a NATO office in Ukraine.