How to use if/else statements to calculate values?

[RebootFixesAll]

I did find this post that worked perfectly for me

AQI From PMS7003 pm2.5 sensor

As of May 2024 the US AQI uses new calculations, here’s an updated template templates: - sensor: - name: "Family Room AQI (pm2.5)" state: >- {% macro aqi(val, val_l, val_h, aqi_l, aqi_h) -%} {{(((aqi_h-aqi_l)/(val_h - val_l) * (val - val_l)) + aqi_l)|round(0)}} {%- endmacro %} {% set v = states('sensor.family_room_pm2_5')|round(1) %} {% if v <= 9.0 %} {{aqi(v, 0, 9.0, 0, 50)}} {% elif 9.0 < v <= 35.4 %} {{aqi(v, 9…