One spike of bad air this week. The PM 10 reading got way too high late on the 7th and early on the 8th.
Monday, September 16, 2019
Saturday, September 14, 2019
The day started out clear, but partially cloudy skies popped up later in the day on two occasions. It's interesting to note that after 4:00 PM, not all colors were effected equally.
We hit 100% relative humidity during the night. That's not unexpected, since when retrieved the sensor in the morning, it was covered in dew. However, it appears the second night was drier than the first.
Monday, September 9, 2019
Spiky results with a period of 24 hours. At midnight, the concentration of particulates is at their lowest. They then increase until late afternoon. Odd, I'll have to see if this occurs regularly now.
Wednesday, September 4, 2019
The sky became partly cloudy in the afternoon. Otherwise, an uneventful day. Interesting to notice is that when the sky became partly cloudy, the temperature and relative humidity sensor responded as expected.
Monday, September 2, 2019
The WiFi I use is a Verizon Jet Pack and it shut itself off for a while during this week's monitoring. Therefore this week's air quality monitoring is truncated.
Sunday, September 1, 2019
Tuesday, August 27, 2019
The temperature and relative humidity sensor are shielded from direct exposure from rain, to an extent. At around 3:00 PM, the sensor and its housing got doused with water from a lawn sprinkler. Hence, the brief change in temperature and relative humidity.
I placed the LED Photometer in the wrong location this week. So the photometer got sprayed with the lawn sprinkler during one of its watering sessions. The sky didn't actually go dark at 2:00 PM.
Monday, August 26, 2019
Wednesday, August 21, 2019
Odd spikes again in the ultraviolet. I wonder if this is seasonal? The detectors are LEDs and do have some directionality in their sensitivity. The 10:30 AM drop in green intensity is unusual also.
Nothing unusual on the 18th. But the temperature did drop low enough to reach 100% relative humidity shortly before sunrise.
Sunday, August 18, 2019
Saturday, August 17, 2019
Thursday, August 15, 2019
A clear day without clouds. Interesting spikes in UV-B, however. And interesting to note that the time for peak intensities for each spectral band wasn't the same.
It got cool enough over night to reach 100% relative humidity. Otherwise, nothing unexpected for a mid-August day - very dry during the day.