This reminds me of a very interesting observation a couple in 2022:
While taking SQC measurements from a park in Montreal's suburbs, I noticed that the zenith became darker just after the clouds cleared overhead but were still covering Montreal (2nd image). The clouds acted like a blanket over MTL

By the way, while these decorative street lights do have a prismatic lens, they are better than they might seem and emit ~120 lm of uplight (2.5%)

Here’s an example of how color and brightness can be used selectively for specific applications instead of painting everything in harsh white light. Street light are 2200K LED, pedestrian crossing is 4000K.
#lightpollution #LED
📍Sherbrooke, QC

This picture, taken in January from the ISS, reveals a true transformation of Quebec’s nightscape, marked by the wide adoption of white LEDs in public and private lighting.

In contrast, the Mont-Megantic International Dark Sky Reserve can be seen with its dimmer and amber-colored lighting.

Here's map where you can see the light pollution and the locations of the different photometers (not all of them are on the graph).

Not as pretty as a picture, but way more geek ;)

Here’s last night's lunar eclipse seen from the TESS-W photometers located in southern Quebec. These instruments measure the sky brightness by looking toward the zenith. (darkness increases the higher you go on the y-axis).