What range are you using to assess air quality scores and what do the color-coded scores mean?
FAQ , Air Purification , Troubleshooting Modified: March 19, 2026
The ranges your Lennox Smart Air Quality Monitor reports (Good, Fair and Poor) are the same the levels the EPA uses in reporting AQI (Air Quality Index) for PM2.5.
• Green = good air quality
• Yellow = fair air quality
• Orange = poor air quality
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