gistfile1.txt

var long lastNotified = 0
var String lastReceipt
rule "Alert for bad air"
when
    Item Master_Air_Pm25 changed or System started
then
    val pm25 = (Master_Air_Pm25.state as Number).intValue
    logDebug("air-quality", "pm25 = {}", pm25)
    if ((now.millis - lastNotified) > 3600000) {
        if (pm25 >= 15) {
            val message = String::format("Attention, PM2.5 level is %d; Sent command to run HVAC fan", pm25)
            Nest_Thermostat_FanTimerActive.sendCommand(ON);
            lastReceipt = sendPushoverMessage(
                pushoverBuilder(message).withTitle("Indoor PM2.5 alert").withEmergencyPriority())
            logInfo("air-quality", "Send message with receipt {}; lastNotified was {}", lastReceipt, lastNotified)
            lastNotified = now.millis
        }
    }
end