dirty solar panels, warm weather, lower power output?

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hi guys,
had solar installed about a month ago - at points i have seen my solar generate as high as 7.5kw at any one moment, but at the moment the highest i have seen them hit is about 5.7kw - clear skies, is the warmer weather affecting my output?
or we also had some kind of dust / sand storm and everyones cars look filthy, my panels look a bit dirty and dusty too, would this also be affecting output? have you guys noticed any difference in performance?
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The warm weather will affect output but it seems unlikely that the effect would be as large as reported for only a <10 degree variation in ambient temperature - are you sure it was the same time of day? What was the wind like as the heat will build up a lot more on a windless day? are you currently under hazy sunshine?
You can get largish spikes where the panels have been under cloud all day (so cool) and the sun peaks out from behind a cloud. I presume that was not the case when you recorded the previous maximum(?)
There is the slight possibility that one of your strings has gone down to the inverter. Do you have multiple strings of panels going into the inverter?
You are right about the strings unless you have a string with only a few panels on.
Install 2: Sept 19, 600W SSE
Solax 6.3kWh battery
I'm same with those tv dishes.
Re the sun pannels, watch out for the dead pigeons under them or roof leaks as it cost lot more to get the roof seen to etc.
I assume you do live in a cave somewhere ?
4kWp S Facing 17.5deg slope (dormer roof).
BEV : Nissan Leaf e+
Solar PV 5.25kWp SW facing (14 x 375 Longi) Lux 3.6kw hybrid inverter and 4.8kw Pylontech battery storage installed March 22
Octopus Flux electric and Tracker gas
Or are you doing this for every thread mentioning solar panels?
Install 2: Sept 19, 600W SSE
Solax 6.3kWh battery