The Halo readings look a bit off. Are they accurate? Abraham Gomez April 03, 2020 00:35 Updated The Halo has a “burn-in” period of about a week. After a week the readings will become more accurate and consistent. Related articles My PM levels are staying on 1 and won’t change. Is that correct? My Halo didn’t update to the latest version. How can I update my firmware to the latest version? General Pairing Issues The air quality number on the app is jumping all over the place. Comments 0 comments Please sign in to leave a comment.