Both Latios and Latias have been hanging out at gyms for a few weeks now but if you have not caught yourself these Legendary Pokemon, now is your last chance to do it.
Both Latios and Latias will be removed from the Pokemon Go game this week on the 5th of June. Of course, there is a high chance that it will still be coming back later on but we do not know when that will happen.
Although both Latios and Latias will be leaving this week, Pokemon Go players will still have a few more days to try and capture Ho-Oh, the Rainbow Pokemon as that Legendary Pokemon will hang around until the 7th of June.
Another way to nab yourself a Legendary is to complete the Field Research quest which would allow you to encounter Articuno with the chance of capturing it. The new Adventure Week will also end on the 5th of June.