Los Alamos National Laboratory links to site home page

Monitoring Total Particulate Matter

We measure the total particulate mass concentration in the air on a routine basis as well as during incidents that may affect ambient air.

Raw 24-Hour Averages Data for Old White Rock Fire Station

View Data

View 30-Minute Averages

Select a different location

24-hour averages provide an indication of the current air concentrations.

They can be compared to the EPA standards of 35 µg/m3 (PM 2.5) and 150 µg/m3 (PM 10)
Select Start Date
MarchApril 2026May
SunMonTueWedThuFriSat
2930311234
567891011
12131415161718
19202122232425
262728293012
3456789
Select End Date
MarchApril 2026May
SunMonTueWedThuFriSat
2930311234
567891011
12131415161718
19202122232425
262728293012
3456789
13.3106 µg/m3 on Saturday, April 18, 2026 1:00 AM 13.3825 µg/m3 on Saturday, April 18, 2026 1:30 AM 13.6111 µg/m3 on Saturday, April 18, 2026 2:00 AM 13.4986 µg/m3 on Saturday, April 18, 2026 2:30 AM 13.3972 µg/m3 on Saturday, April 18, 2026 3:00 AM 13.4986 µg/m3 on Saturday, April 18, 2026 3:30 AM 13.7318 µg/m3 on Saturday, April 18, 2026 4:00 AM 13.5444 µg/m3 on Saturday, April 18, 2026 4:30 AM 13.5481 µg/m3 on Saturday, April 18, 2026 5:00 AM 13.4695 µg/m3 on Saturday, April 18, 2026 5:30 AM 13.6493 µg/m3 on Saturday, April 18, 2026 6:00 AM 13.3136 µg/m3 on Saturday, April 18, 2026 6:30 AM 13.2979 µg/m3 on Saturday, April 18, 2026 7:00 AM 13.2898 µg/m3 on Saturday, April 18, 2026 7:30 AM 13.2021 µg/m3 on Saturday, April 18, 2026 8:00 AM 13.0751 µg/m3 on Saturday, April 18, 2026 8:30 AM 12.9014 µg/m3 on Saturday, April 18, 2026 9:00 AM 12.9231 µg/m3 on Saturday, April 18, 2026 9:30 AM 12.9291 µg/m3 on Saturday, April 18, 2026 10:00 AM 12.8242 µg/m3 on Saturday, April 18, 2026 10:30 AM 12.6395 µg/m3 on Saturday, April 18, 2026 11:00 AM 12.0585 µg/m3 on Saturday, April 18, 2026 11:30 AM 11.8413 µg/m3 on Saturday, April 18, 2026 12:00 PM 11.6558 µg/m3 on Saturday, April 18, 2026 12:30 PM 11.3956 µg/m3 on Saturday, April 18, 2026 1:00 PM 11.2839 µg/m3 on Saturday, April 18, 2026 1:30 PM 11.372 µg/m3 on Saturday, April 18, 2026 2:00 PM 10.1369 µg/m3 on Saturday, April 18, 2026 2:30 PM 9.6549 µg/m3 on Saturday, April 18, 2026 3:00 PM 9.5024 µg/m3 on Saturday, April 18, 2026 3:30 PM 9.255 µg/m3 on Saturday, April 18, 2026 4:00 PM 8.3566 µg/m3 on Saturday, April 18, 2026 4:30 PM 7.8326 µg/m3 on Saturday, April 18, 2026 5:00 PM 7.6472 µg/m3 on Saturday, April 18, 2026 5:30 PM 7.2695 µg/m3 on Saturday, April 18, 2026 6:00 PM 6.9587 µg/m3 on Saturday, April 18, 2026 6:30 PM 6.722 µg/m3 on Saturday, April 18, 2026 7:00 PM 7.1082 µg/m3 on Saturday, April 18, 2026 7:30 PM 7.2627 µg/m3 on Saturday, April 18, 2026 8:00 PM 7.4738 µg/m3 on Saturday, April 18, 2026 8:30 PM 7.3039 µg/m3 on Saturday, April 18, 2026 9:00 PM 7.8576 µg/m3 on Saturday, April 18, 2026 9:30 PM 7.8642 µg/m3 on Saturday, April 18, 2026 10:00 PM 8.0009 µg/m3 on Saturday, April 18, 2026 10:30 PM 8.2239 µg/m3 on Saturday, April 18, 2026 11:00 PM 8.3066 µg/m3 on Saturday, April 18, 2026 11:30 PM 8.2977 µg/m3 on Sunday, April 19, 2026 12:00 AM 8.1062 µg/m3 on Sunday, April 19, 2026 12:30 AM 7.9618 µg/m3 on Sunday, April 19, 2026 1:00 AM 8.0914 µg/m3 on Sunday, April 19, 2026 1:30 AM 8.1724 µg/m3 on Sunday, April 19, 2026 2:00 AM 8.0872 µg/m3 on Sunday, April 19, 2026 2:30 AM 7.976 µg/m3 on Sunday, April 19, 2026 3:00 AM 8.0826 µg/m3 on Sunday, April 19, 2026 3:30 AM 8.214 µg/m3 on Sunday, April 19, 2026 4:00 AM 8.1239 µg/m3 on Sunday, April 19, 2026 4:30 AM 8.0343 µg/m3 on Sunday, April 19, 2026 5:00 AM 8.2176 µg/m3 on Sunday, April 19, 2026 5:30 AM 8.3931 µg/m3 on Sunday, April 19, 2026 6:00 AM 8.3445 µg/m3 on Sunday, April 19, 2026 6:30 AM 8.4453 µg/m3 on Sunday, April 19, 2026 7:00 AM 8.4847 µg/m3 on Sunday, April 19, 2026 7:30 AM 8.5681 µg/m3 on Sunday, April 19, 2026 8:00 AM 8.4996 µg/m3 on Sunday, April 19, 2026 8:30 AM 8.5501 µg/m3 on Sunday, April 19, 2026 9:00 AM 8.5712 µg/m3 on Sunday, April 19, 2026 9:30 AM 8.7951 µg/m3 on Sunday, April 19, 2026 10:00 AM 8.8272 µg/m3 on Sunday, April 19, 2026 10:30 AM 8.8312 µg/m3 on Sunday, April 19, 2026 11:00 AM 9.0654 µg/m3 on Sunday, April 19, 2026 11:30 AM 9.2137 µg/m3 on Sunday, April 19, 2026 12:00 PM 9.2681 µg/m3 on Sunday, April 19, 2026 12:30 PM 9.3286 µg/m3 on Sunday, April 19, 2026 1:00 PM 9.5465 µg/m3 on Sunday, April 19, 2026 1:30 PM 9.9325 µg/m3 on Sunday, April 19, 2026 2:00 PM 9.9748 µg/m3 on Sunday, April 19, 2026 2:30 PM 10.1951 µg/m3 on Sunday, April 19, 2026 3:00 PM 10.375 µg/m3 on Sunday, April 19, 2026 3:30 PM 10.918 µg/m3 on Sunday, April 19, 2026 4:00 PM 10.9588 µg/m3 on Sunday, April 19, 2026 4:30 PM 11.0052 µg/m3 on Sunday, April 19, 2026 5:00 PM 11.2037 µg/m3 on Sunday, April 19, 2026 5:30 PM 11.3323 µg/m3 on Sunday, April 19, 2026 6:00 PM 11.3627 µg/m3 on Sunday, April 19, 2026 6:30 PM 11.3047 µg/m3 on Sunday, April 19, 2026 7:00 PM 11.3282 µg/m3 on Sunday, April 19, 2026 7:30 PM 11.5042 µg/m3 on Sunday, April 19, 2026 8:00 PM 11.3952 µg/m3 on Sunday, April 19, 2026 8:30 PM 11.322 µg/m3 on Sunday, April 19, 2026 9:00 PM 11.292 µg/m3 on Sunday, April 19, 2026 9:30 PM 11.2035 µg/m3 on Sunday, April 19, 2026 10:00 PM 11.01 µg/m3 on Sunday, April 19, 2026 10:30 PM 10.8513 µg/m3 on Sunday, April 19, 2026 11:00 PM 10.9547 µg/m3 on Sunday, April 19, 2026 11:30 PM 11.154 µg/m3 on Monday, April 20, 2026 12:00 AM 11.0011 µg/m3 on Monday, April 20, 2026 12:30 AM 11.0615 µg/m3 on Monday, April 20, 2026 1:00 AM 11.1968 µg/m3 on Monday, April 20, 2026 1:30 AM 11.4059 µg/m3 on Monday, April 20, 2026 2:00 AM 11.414 µg/m3 on Monday, April 20, 2026 2:30 AM 11.4054 µg/m3 on Monday, April 20, 2026 3:00 AM 11.6119 µg/m3 on Monday, April 20, 2026 3:30 AM 11.7567 µg/m3 on Monday, April 20, 2026 4:00 AM 11.7246 µg/m3 on Monday, April 20, 2026 4:30 AM 11.7262 µg/m3 on Monday, April 20, 2026 5:00 AM 11.7829 µg/m3 on Monday, April 20, 2026 5:30 AM 11.9268 µg/m3 on Monday, April 20, 2026 6:00 AM 11.9334 µg/m3 on Monday, April 20, 2026 6:30 AM 11.8886 µg/m3 on Monday, April 20, 2026 7:00 AM 12.2138 µg/m3 on Monday, April 20, 2026 7:30 AM 12.328 µg/m3 on Monday, April 20, 2026 8:00 AM 12.4858 µg/m3 on Monday, April 20, 2026 8:30 AM 12.5113 µg/m3 on Monday, April 20, 2026 9:00 AM 12.4647 µg/m3 on Monday, April 20, 2026 9:30 AM 12.744 µg/m3 on Monday, April 20, 2026 10:00 AM 12.7098 µg/m3 on Monday, April 20, 2026 10:30 AM 12.7845 µg/m3 on Monday, April 20, 2026 11:00 AM 12.6876 µg/m3 on Monday, April 20, 2026 11:30 AM 12.9561 µg/m3 on Monday, April 20, 2026 12:00 PM 12.8781 µg/m3 on Monday, April 20, 2026 12:30 PM 12.7189 µg/m3 on Monday, April 20, 2026 1:00 PM 12.8095 µg/m3 on Monday, April 20, 2026 1:30 PM 12.7953 µg/m3 on Monday, April 20, 2026 2:00 PM 12.6348 µg/m3 on Monday, April 20, 2026 2:30 PM 12.6894 µg/m3 on Monday, April 20, 2026 3:00 PM 12.641 µg/m3 on Monday, April 20, 2026 3:30 PM 12.6895 µg/m3 on Monday, April 20, 2026 4:00 PM 12.68 µg/m3 on Monday, April 20, 2026 4:30 PM 12.5741 µg/m3 on Monday, April 20, 2026 5:00 PM 12.8006 µg/m3 on Monday, April 20, 2026 5:30 PM 12.9414 µg/m3 on Monday, April 20, 2026 6:00 PM 12.9673 µg/m3 on Monday, April 20, 2026 6:30 PM 12.9388 µg/m3 on Monday, April 20, 2026 7:00 PM 13.1417 µg/m3 on Monday, April 20, 2026 7:30 PM 13.2598 µg/m3 on Monday, April 20, 2026 8:00 PM 13.22 µg/m3 on Monday, April 20, 2026 8:30 PM 13.1307 µg/m3 on Monday, April 20, 2026 9:00 PM 13.1933 µg/m3 on Monday, April 20, 2026 9:30 PM 13.3849 µg/m3 on Monday, April 20, 2026 10:00 PM 13.6474 µg/m3 on Monday, April 20, 2026 10:30 PM 13.4257 µg/m3 on Monday, April 20, 2026 11:00 PM 14.05 µg/m3 on Monday, April 20, 2026 11:30 PM 14.0516 µg/m3 on Tuesday, April 21, 2026 12:00 AM 14.4334 µg/m3 on Tuesday, April 21, 2026 12:30 AM 14.2345 µg/m3 on Tuesday, April 21, 2026 1:00 AM 14.5125 µg/m3 on Tuesday, April 21, 2026 1:30 AM 14.5339 µg/m3 on Tuesday, April 21, 2026 2:00 AM 14.4145 µg/m3 on Tuesday, April 21, 2026 2:30 AM 14.3117 µg/m3 on Tuesday, April 21, 2026 3:00 AM 14.3098 µg/m3 on Tuesday, April 21, 2026 3:30 AM 14.4778 µg/m3 on Tuesday, April 21, 2026 4:00 AM 14.2097 µg/m3 on Tuesday, April 21, 2026 4:30 AM 14.0536 µg/m3 on Tuesday, April 21, 2026 5:00 AM 14.1266 µg/m3 on Tuesday, April 21, 2026 5:30 AM 14.0397 µg/m3 on Tuesday, April 21, 2026 6:00 AM 14.1439 µg/m3 on Tuesday, April 21, 2026 6:30 AM 14.0165 µg/m3 on Tuesday, April 21, 2026 7:00 AM 14.1099 µg/m3 on Tuesday, April 21, 2026 7:30 AM 14.0681 µg/m3 on Tuesday, April 21, 2026 8:00 AM 13.918 µg/m3 on Tuesday, April 21, 2026 8:30 AM 13.8738 µg/m3 on Tuesday, April 21, 2026 9:00 AM 13.8173 µg/m3 on Tuesday, April 21, 2026 9:30 AM 14.0076 µg/m3 on Tuesday, April 21, 2026 10:00 AM 13.9558 µg/m3 on Tuesday, April 21, 2026 10:30 AM 13.8065 µg/m3 on Tuesday, April 21, 2026 11:00 AM 13.9265 µg/m3 on Tuesday, April 21, 2026 11:30 AM 13.8833 µg/m3 on Tuesday, April 21, 2026 12:00 PM 13.6611 µg/m3 on Tuesday, April 21, 2026 12:30 PM 13.714 µg/m3 on Tuesday, April 21, 2026 1:00 PM 13.7162 µg/m3 on Tuesday, April 21, 2026 1:30 PM 13.7076 µg/m3 on Tuesday, April 21, 2026 2:00 PM 13.8203 µg/m3 on Tuesday, April 21, 2026 2:30 PM 13.5233 µg/m3 on Tuesday, April 21, 2026 3:00 PM 13.8311 µg/m3 on Tuesday, April 21, 2026 3:30 PM 13.8519 µg/m3 on Tuesday, April 21, 2026 4:00 PM 14.1479 µg/m3 on Tuesday, April 21, 2026 4:30 PM 13.8075 µg/m3 on Tuesday, April 21, 2026 5:00 PM 13.7278 µg/m3 on Tuesday, April 21, 2026 5:30 PM 13.825 µg/m3 on Tuesday, April 21, 2026 6:00 PM 13.7504 µg/m3 on Tuesday, April 21, 2026 6:30 PM 13.816 µg/m3 on Tuesday, April 21, 2026 7:00 PM 1.6895 µg/m3 on Saturday, April 18, 2026 1:00 AM 1.8571 µg/m3 on Saturday, April 18, 2026 1:30 AM 1.9939 µg/m3 on Saturday, April 18, 2026 2:00 AM 1.8765 µg/m3 on Saturday, April 18, 2026 2:30 AM 1.866 µg/m3 on Saturday, April 18, 2026 3:00 AM 1.9667 µg/m3 on Saturday, April 18, 2026 3:30 AM 2.0799 µg/m3 on Saturday, April 18, 2026 4:00 AM 2.0324 µg/m3 on Saturday, April 18, 2026 4:30 AM 1.893 µg/m3 on Saturday, April 18, 2026 5:00 AM 2.0134 µg/m3 on Saturday, April 18, 2026 5:30 AM 2.169 µg/m3 on Saturday, April 18, 2026 6:00 AM 1.9787 µg/m3 on Saturday, April 18, 2026 6:30 AM 1.8944 µg/m3 on Saturday, April 18, 2026 7:00 AM 2.0143 µg/m3 on Saturday, April 18, 2026 7:30 AM 2.0982 µg/m3 on Saturday, April 18, 2026 8:00 AM 2.0112 µg/m3 on Saturday, April 18, 2026 8:30 AM 1.9784 µg/m3 on Saturday, April 18, 2026 9:00 AM 1.9802 µg/m3 on Saturday, April 18, 2026 9:30 AM 2.1036 µg/m3 on Saturday, April 18, 2026 10:00 AM 2.0531 µg/m3 on Saturday, April 18, 2026 10:30 AM 2.0217 µg/m3 on Saturday, April 18, 2026 11:00 AM 2.0939 µg/m3 on Saturday, April 18, 2026 11:30 AM 2.103 µg/m3 on Saturday, April 18, 2026 12:00 PM 1.9853 µg/m3 on Saturday, April 18, 2026 12:30 PM 1.95 µg/m3 on Saturday, April 18, 2026 1:00 PM 1.9548 µg/m3 on Saturday, April 18, 2026 1:30 PM 2.0861 µg/m3 on Saturday, April 18, 2026 2:00 PM 1.802 µg/m3 on Saturday, April 18, 2026 2:30 PM 1.6106 µg/m3 on Saturday, April 18, 2026 3:00 PM 1.6728 µg/m3 on Saturday, April 18, 2026 3:30 PM 1.7709 µg/m3 on Saturday, April 18, 2026 4:00 PM 1.4424 µg/m3 on Saturday, April 18, 2026 4:30 PM 1.304 µg/m3 on Saturday, April 18, 2026 5:00 PM 1.3693 µg/m3 on Saturday, April 18, 2026 5:30 PM 1.4627 µg/m3 on Saturday, April 18, 2026 6:00 PM 1.3022 µg/m3 on Saturday, April 18, 2026 6:30 PM 1.1769 µg/m3 on Saturday, April 18, 2026 7:00 PM 1.3509 µg/m3 on Saturday, April 18, 2026 7:30 PM 1.502 µg/m3 on Saturday, April 18, 2026 8:00 PM 1.5333 µg/m3 on Saturday, April 18, 2026 8:30 PM 1.3418 µg/m3 on Saturday, April 18, 2026 9:00 PM 1.6141 µg/m3 on Saturday, April 18, 2026 9:30 PM 1.6888 µg/m3 on Saturday, April 18, 2026 10:00 PM 1.6546 µg/m3 on Saturday, April 18, 2026 10:30 PM 1.6137 µg/m3 on Saturday, April 18, 2026 11:00 PM 1.7514 µg/m3 on Saturday, April 18, 2026 11:30 PM 1.8093 µg/m3 on Sunday, April 19, 2026 12:00 AM 1.7451 µg/m3 on Sunday, April 19, 2026 12:30 AM 1.6058 µg/m3 on Sunday, April 19, 2026 1:00 AM 1.7389 µg/m3 on Sunday, April 19, 2026 1:30 AM 1.8465 µg/m3 on Sunday, April 19, 2026 2:00 AM 1.7354 µg/m3 on Sunday, April 19, 2026 2:30 AM 1.6215 µg/m3 on Sunday, April 19, 2026 3:00 AM 1.6943 µg/m3 on Sunday, April 19, 2026 3:30 AM 1.8134 µg/m3 on Sunday, April 19, 2026 4:00 AM 1.6429 µg/m3 on Sunday, April 19, 2026 4:30 AM 1.5486 µg/m3 on Sunday, April 19, 2026 5:00 AM 1.6595 µg/m3 on Sunday, April 19, 2026 5:30 AM 1.7305 µg/m3 on Sunday, April 19, 2026 6:00 AM 1.6707 µg/m3 on Sunday, April 19, 2026 6:30 AM 1.6153 µg/m3 on Sunday, April 19, 2026 7:00 AM 1.6381 µg/m3 on Sunday, April 19, 2026 7:30 AM 1.6558 µg/m3 on Sunday, April 19, 2026 8:00 AM 1.5806 µg/m3 on Sunday, April 19, 2026 8:30 AM 1.4926 µg/m3 on Sunday, April 19, 2026 9:00 AM 1.508 µg/m3 on Sunday, April 19, 2026 9:30 AM 1.6012 µg/m3 on Sunday, April 19, 2026 10:00 AM 1.5654 µg/m3 on Sunday, April 19, 2026 10:30 AM 1.4163 µg/m3 on Sunday, April 19, 2026 11:00 AM 1.5175 µg/m3 on Sunday, April 19, 2026 11:30 AM 1.6189 µg/m3 on Sunday, April 19, 2026 12:00 PM 1.4141 µg/m3 on Sunday, April 19, 2026 12:30 PM 1.387 µg/m3 on Sunday, April 19, 2026 1:00 PM 1.5387 µg/m3 on Sunday, April 19, 2026 1:30 PM 1.7179 µg/m3 on Sunday, April 19, 2026 2:00 PM 1.6159 µg/m3 on Sunday, April 19, 2026 2:30 PM 1.5875 µg/m3 on Sunday, April 19, 2026 3:00 PM 1.6869 µg/m3 on Sunday, April 19, 2026 3:30 PM 1.8309 µg/m3 on Sunday, April 19, 2026 4:00 PM 1.8141 µg/m3 on Sunday, April 19, 2026 4:30 PM 1.7381 µg/m3 on Sunday, April 19, 2026 5:00 PM 1.8589 µg/m3 on Sunday, April 19, 2026 5:30 PM 1.9116 µg/m3 on Sunday, April 19, 2026 6:00 PM 1.8792 µg/m3 on Sunday, April 19, 2026 6:30 PM 1.826 µg/m3 on Sunday, April 19, 2026 7:00 PM 1.8468 µg/m3 on Sunday, April 19, 2026 7:30 PM 1.9909 µg/m3 on Sunday, April 19, 2026 8:00 PM 1.8646 µg/m3 on Sunday, April 19, 2026 8:30 PM 1.7569 µg/m3 on Sunday, April 19, 2026 9:00 PM 1.8125 µg/m3 on Sunday, April 19, 2026 9:30 PM 1.8061 µg/m3 on Sunday, April 19, 2026 10:00 PM 1.7293 µg/m3 on Sunday, April 19, 2026 10:30 PM 1.5592 µg/m3 on Sunday, April 19, 2026 11:00 PM 1.7239 µg/m3 on Sunday, April 19, 2026 11:30 PM 1.8411 µg/m3 on Monday, April 20, 2026 12:00 AM 1.6832 µg/m3 on Monday, April 20, 2026 12:30 AM 1.6237 µg/m3 on Monday, April 20, 2026 1:00 AM 1.7313 µg/m3 on Monday, April 20, 2026 1:30 AM 1.8742 µg/m3 on Monday, April 20, 2026 2:00 AM 1.7875 µg/m3 on Monday, April 20, 2026 2:30 AM 1.6905 µg/m3 on Monday, April 20, 2026 3:00 AM 1.853 µg/m3 on Monday, April 20, 2026 3:30 AM 1.9507 µg/m3 on Monday, April 20, 2026 4:00 AM 1.9062 µg/m3 on Monday, April 20, 2026 4:30 AM 1.8559 µg/m3 on Monday, April 20, 2026 5:00 AM 1.9535 µg/m3 on Monday, April 20, 2026 5:30 AM 2.074 µg/m3 on Monday, April 20, 2026 6:00 AM 2.0364 µg/m3 on Monday, April 20, 2026 6:30 AM 1.9117 µg/m3 on Monday, April 20, 2026 7:00 AM 2.1407 µg/m3 on Monday, April 20, 2026 7:30 AM 2.2131 µg/m3 on Monday, April 20, 2026 8:00 AM 2.2092 µg/m3 on Monday, April 20, 2026 8:30 AM 2.2235 µg/m3 on Monday, April 20, 2026 9:00 AM 2.2224 µg/m3 on Monday, April 20, 2026 9:30 AM 2.3385 µg/m3 on Monday, April 20, 2026 10:00 AM 2.3237 µg/m3 on Monday, April 20, 2026 10:30 AM 2.2822 µg/m3 on Monday, April 20, 2026 11:00 AM 2.2948 µg/m3 on Monday, April 20, 2026 11:30 AM 2.4289 µg/m3 on Monday, April 20, 2026 12:00 PM 2.3473 µg/m3 on Monday, April 20, 2026 12:30 PM 2.2633 µg/m3 on Monday, April 20, 2026 1:00 PM 2.3734 µg/m3 on Monday, April 20, 2026 1:30 PM 2.421 µg/m3 on Monday, April 20, 2026 2:00 PM 2.4023 µg/m3 on Monday, April 20, 2026 2:30 PM 2.3309 µg/m3 on Monday, April 20, 2026 3:00 PM 2.3931 µg/m3 on Monday, April 20, 2026 3:30 PM 2.5399 µg/m3 on Monday, April 20, 2026 4:00 PM 2.4417 µg/m3 on Monday, April 20, 2026 4:30 PM 2.3359 µg/m3 on Monday, April 20, 2026 5:00 PM 2.4814 µg/m3 on Monday, April 20, 2026 5:30 PM 2.6429 µg/m3 on Monday, April 20, 2026 6:00 PM 2.5043 µg/m3 on Monday, April 20, 2026 6:30 PM 2.3958 µg/m3 on Monday, April 20, 2026 7:00 PM 2.53 µg/m3 on Monday, April 20, 2026 7:30 PM 2.6485 µg/m3 on Monday, April 20, 2026 8:00 PM 2.5483 µg/m3 on Monday, April 20, 2026 8:30 PM 2.4177 µg/m3 on Monday, April 20, 2026 9:00 PM 2.5396 µg/m3 on Monday, April 20, 2026 9:30 PM 2.6345 µg/m3 on Monday, April 20, 2026 10:00 PM 2.5992 µg/m3 on Monday, April 20, 2026 10:30 PM 2.3934 µg/m3 on Monday, April 20, 2026 11:00 PM 2.6841 µg/m3 on Monday, April 20, 2026 11:30 PM 2.8147 µg/m3 on Tuesday, April 21, 2026 12:00 AM 2.7944 µg/m3 on Tuesday, April 21, 2026 12:30 AM 2.6081 µg/m3 on Tuesday, April 21, 2026 1:00 AM 2.8398 µg/m3 on Tuesday, April 21, 2026 1:30 AM 2.8787 µg/m3 on Tuesday, April 21, 2026 2:00 AM 2.7982 µg/m3 on Tuesday, April 21, 2026 2:30 AM 2.6614 µg/m3 on Tuesday, April 21, 2026 3:00 AM 2.7326 µg/m3 on Tuesday, April 21, 2026 3:30 AM 2.8996 µg/m3 on Tuesday, April 21, 2026 4:00 AM 2.7219 µg/m3 on Tuesday, April 21, 2026 4:30 AM 2.6537 µg/m3 on Tuesday, April 21, 2026 5:00 AM 2.6976 µg/m3 on Tuesday, April 21, 2026 5:30 AM 2.7657 µg/m3 on Tuesday, April 21, 2026 6:00 AM 2.7336 µg/m3 on Tuesday, April 21, 2026 6:30 AM 2.6569 µg/m3 on Tuesday, April 21, 2026 7:00 AM 2.715 µg/m3 on Tuesday, April 21, 2026 7:30 AM 2.7677 µg/m3 on Tuesday, April 21, 2026 8:00 AM 2.6625 µg/m3 on Tuesday, April 21, 2026 8:30 AM 2.6182 µg/m3 on Tuesday, April 21, 2026 9:00 AM 2.6252 µg/m3 on Tuesday, April 21, 2026 9:30 AM 2.7012 µg/m3 on Tuesday, April 21, 2026 10:00 AM 2.6521 µg/m3 on Tuesday, April 21, 2026 10:30 AM 2.5792 µg/m3 on Tuesday, April 21, 2026 11:00 AM 2.6463 µg/m3 on Tuesday, April 21, 2026 11:30 AM 2.6417 µg/m3 on Tuesday, April 21, 2026 12:00 PM 2.5888 µg/m3 on Tuesday, April 21, 2026 12:30 PM 2.5028 µg/m3 on Tuesday, April 21, 2026 1:00 PM 2.54 µg/m3 on Tuesday, April 21, 2026 1:30 PM 2.5997 µg/m3 on Tuesday, April 21, 2026 2:00 PM 2.6197 µg/m3 on Tuesday, April 21, 2026 2:30 PM 2.4044 µg/m3 on Tuesday, April 21, 2026 3:00 PM 2.4826 µg/m3 on Tuesday, April 21, 2026 3:30 PM 2.5096 µg/m3 on Tuesday, April 21, 2026 4:00 PM 2.5342 µg/m3 on Tuesday, April 21, 2026 4:30 PM 2.3916 µg/m3 on Tuesday, April 21, 2026 5:00 PM 2.4111 µg/m3 on Tuesday, April 21, 2026 5:30 PM 2.5121 µg/m3 on Tuesday, April 21, 2026 6:00 PM 2.4715 µg/m3 on Tuesday, April 21, 2026 6:30 PM 2.3646 µg/m3 on Tuesday, April 21, 2026 7:00 PM
Date & TimePM 2.5 24-hour Average (µg/m3)PM 10 24-hour Average (µg/m3)
4/21/2026 6:00:00 PM (MDT) 2.36 13.816
4/21/2026 5:30:00 PM (MDT) 2.47 13.7504
4/21/2026 5:00:00 PM (MDT) 2.51 13.825
4/21/2026 4:30:00 PM (MDT) 2.41 13.7278
4/21/2026 4:00:00 PM (MDT) 2.39 13.8075
4/21/2026 3:30:00 PM (MDT) 2.53 14.1479
4/21/2026 3:00:00 PM (MDT) 2.51 13.8519
4/21/2026 2:30:00 PM (MDT) 2.48 13.8311
4/21/2026 2:00:00 PM (MDT) 2.4 13.5233
4/21/2026 1:30:00 PM (MDT) 2.62 13.8203
4/21/2026 1:00:00 PM (MDT) 2.6 13.7076
4/21/2026 12:30:00 PM (MDT) 2.54 13.7162
4/21/2026 12:00:00 PM (MDT) 2.5 13.714
4/21/2026 11:30:00 AM (MDT) 2.59 13.6611
4/21/2026 11:00:00 AM (MDT) 2.64 13.8833
4/21/2026 10:30:00 AM (MDT) 2.65 13.9265
4/21/2026 10:00:00 AM (MDT) 2.58 13.8065
4/21/2026 9:30:00 AM (MDT) 2.65 13.9558
4/21/2026 9:00:00 AM (MDT) 2.7 14.0076
4/21/2026 8:30:00 AM (MDT) 2.63 13.8173
4/21/2026 8:00:00 AM (MDT) 2.62 13.8738
4/21/2026 7:30:00 AM (MDT) 2.66 13.918
4/21/2026 7:00:00 AM (MDT) 2.77 14.0681
4/21/2026 6:30:00 AM (MDT) 2.72 14.1099
NextLast

View Chart

What We Monitor & Why

More Like This

Visit Blogger Join Us on Facebook Follow Us on Twitter See our Flickr Photos Watch Our YouTube Videos Find Us on LinkedIn