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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

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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)

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6.2289 µg/m3 on Thursday, January 19, 2017 1:00 AM 6.2396 µg/m3 on Thursday, January 19, 2017 1:30 AM 6.2833 µg/m3 on Thursday, January 19, 2017 2:00 AM 6.2923 µg/m3 on Thursday, January 19, 2017 2:30 AM 6.275 µg/m3 on Thursday, January 19, 2017 3:00 AM 6.274 µg/m3 on Thursday, January 19, 2017 3:30 AM 6.291 µg/m3 on Thursday, January 19, 2017 4:00 AM 6.3371 µg/m3 on Thursday, January 19, 2017 4:30 AM 6.3864 µg/m3 on Thursday, January 19, 2017 5:00 AM 6.4049 µg/m3 on Thursday, January 19, 2017 5:30 AM 6.4091 µg/m3 on Thursday, January 19, 2017 6:00 AM 6.3014 µg/m3 on Thursday, January 19, 2017 6:30 AM 5.8084 µg/m3 on Thursday, January 19, 2017 7:00 AM 5.8583 µg/m3 on Thursday, January 19, 2017 7:30 AM 6.0281 µg/m3 on Thursday, January 19, 2017 8:00 AM 5.5584 µg/m3 on Thursday, January 19, 2017 8:30 AM 5.5366 µg/m3 on Thursday, January 19, 2017 9:00 AM 5.6389 µg/m3 on Thursday, January 19, 2017 9:30 AM 5.8305 µg/m3 on Thursday, January 19, 2017 10:00 AM 6.2159 µg/m3 on Thursday, January 19, 2017 10:30 AM 6.1976 µg/m3 on Thursday, January 19, 2017 11:00 AM 6.1679 µg/m3 on Thursday, January 19, 2017 11:30 AM 6.0964 µg/m3 on Thursday, January 19, 2017 12:00 PM 6.1314 µg/m3 on Thursday, January 19, 2017 12:30 PM 6.095 µg/m3 on Thursday, January 19, 2017 1:00 PM 6.1384 µg/m3 on Thursday, January 19, 2017 1:30 PM 6.154 µg/m3 on Thursday, January 19, 2017 2:00 PM 6.1242 µg/m3 on Thursday, January 19, 2017 2:30 PM 6.0531 µg/m3 on Thursday, January 19, 2017 3:00 PM 6.0261 µg/m3 on Thursday, January 19, 2017 3:30 PM 5.9786 µg/m3 on Thursday, January 19, 2017 4:00 PM 5.9241 µg/m3 on Thursday, January 19, 2017 4:30 PM 5.9385 µg/m3 on Thursday, January 19, 2017 5:00 PM 5.9473 µg/m3 on Thursday, January 19, 2017 5:30 PM 5.7467 µg/m3 on Thursday, January 19, 2017 6:00 PM 5.4984 µg/m3 on Thursday, January 19, 2017 6:30 PM 5.3808 µg/m3 on Thursday, January 19, 2017 7:00 PM 5.4832 µg/m3 on Thursday, January 19, 2017 7:30 PM 5.6007 µg/m3 on Thursday, January 19, 2017 8:00 PM 5.8298 µg/m3 on Thursday, January 19, 2017 8:30 PM 5.9727 µg/m3 on Thursday, January 19, 2017 9:00 PM 6.0557 µg/m3 on Thursday, January 19, 2017 9:30 PM 6.0335 µg/m3 on Thursday, January 19, 2017 10:00 PM 5.9357 µg/m3 on Thursday, January 19, 2017 10:30 PM 5.9708 µg/m3 on Thursday, January 19, 2017 11:00 PM 6.0967 µg/m3 on Thursday, January 19, 2017 11:30 PM 6.0718 µg/m3 on Friday, January 20, 2017 12:00 AM 6.0879 µg/m3 on Friday, January 20, 2017 12:30 AM 6.1306 µg/m3 on Friday, January 20, 2017 1:00 AM 6.0839 µg/m3 on Friday, January 20, 2017 1:30 AM 6.0604 µg/m3 on Friday, January 20, 2017 2:00 AM 6.0439 µg/m3 on Friday, January 20, 2017 2:30 AM 5.9748 µg/m3 on Friday, January 20, 2017 3:00 AM 5.9064 µg/m3 on Friday, January 20, 2017 3:30 AM 5.8812 µg/m3 on Friday, January 20, 2017 4:00 AM 5.8051 µg/m3 on Friday, January 20, 2017 4:30 AM 5.7525 µg/m3 on Friday, January 20, 2017 5:00 AM 5.6997 µg/m3 on Friday, January 20, 2017 5:30 AM 5.6984 µg/m3 on Friday, January 20, 2017 6:00 AM 5.8785 µg/m3 on Friday, January 20, 2017 6:30 AM 6.3308 µg/m3 on Friday, January 20, 2017 7:00 AM 6.2004 µg/m3 on Friday, January 20, 2017 7:30 AM 6.0563 µg/m3 on Friday, January 20, 2017 8:00 AM 6.3788 µg/m3 on Friday, January 20, 2017 8:30 AM 6.3377 µg/m3 on Friday, January 20, 2017 9:00 AM 6.2505 µg/m3 on Friday, January 20, 2017 9:30 AM 6.0624 µg/m3 on Friday, January 20, 2017 10:00 AM 5.7558 µg/m3 on Friday, January 20, 2017 10:30 AM 5.8821 µg/m3 on Friday, January 20, 2017 11:00 AM 6.0558 µg/m3 on Friday, January 20, 2017 11:30 AM 6.0253 µg/m3 on Friday, January 20, 2017 12:00 PM 6.0279 µg/m3 on Friday, January 20, 2017 12:30 PM 6.2118 µg/m3 on Friday, January 20, 2017 1:00 PM 6.3236 µg/m3 on Friday, January 20, 2017 1:30 PM 6.3794 µg/m3 on Friday, January 20, 2017 2:00 PM 6.4302 µg/m3 on Friday, January 20, 2017 2:30 PM 6.5068 µg/m3 on Friday, January 20, 2017 3:00 PM 6.6327 µg/m3 on Friday, January 20, 2017 3:30 PM 6.7101 µg/m3 on Friday, January 20, 2017 4:00 PM 6.6698 µg/m3 on Friday, January 20, 2017 4:30 PM 6.6764 µg/m3 on Friday, January 20, 2017 5:00 PM 6.7134 µg/m3 on Friday, January 20, 2017 5:30 PM 6.7507 µg/m3 on Friday, January 20, 2017 6:00 PM 6.7608 µg/m3 on Friday, January 20, 2017 6:30 PM 6.768 µg/m3 on Friday, January 20, 2017 7:00 PM 6.6622 µg/m3 on Friday, January 20, 2017 7:30 PM 6.6765 µg/m3 on Friday, January 20, 2017 8:00 PM 6.5367 µg/m3 on Friday, January 20, 2017 8:30 PM 6.3958 µg/m3 on Friday, January 20, 2017 9:00 PM 6.2981 µg/m3 on Friday, January 20, 2017 9:30 PM 6.2749 µg/m3 on Friday, January 20, 2017 10:00 PM 6.1787 µg/m3 on Friday, January 20, 2017 10:30 PM 6.0601 µg/m3 on Friday, January 20, 2017 11:00 PM 5.8979 µg/m3 on Friday, January 20, 2017 11:30 PM 5.9792 µg/m3 on Saturday, January 21, 2017 12:00 AM 5.9499 µg/m3 on Saturday, January 21, 2017 12:30 AM 5.9475 µg/m3 on Saturday, January 21, 2017 1:00 AM 6.0345 µg/m3 on Saturday, January 21, 2017 1:30 AM 6.0575 µg/m3 on Saturday, January 21, 2017 2:00 AM 6.031 µg/m3 on Saturday, January 21, 2017 2:30 AM 6.0287 µg/m3 on Saturday, January 21, 2017 3:00 AM 6.0455 µg/m3 on Saturday, January 21, 2017 3:30 AM 6.0248 µg/m3 on Saturday, January 21, 2017 4:00 AM 6.0103 µg/m3 on Saturday, January 21, 2017 4:30 AM 6.0096 µg/m3 on Saturday, January 21, 2017 5:00 AM 6.0031 µg/m3 on Saturday, January 21, 2017 5:30 AM 5.939 µg/m3 on Saturday, January 21, 2017 6:00 AM 5.8289 µg/m3 on Saturday, January 21, 2017 6:30 AM 5.8248 µg/m3 on Saturday, January 21, 2017 7:00 AM 5.8836 µg/m3 on Saturday, January 21, 2017 7:30 AM 5.8779 µg/m3 on Saturday, January 21, 2017 8:00 AM 5.8562 µg/m3 on Saturday, January 21, 2017 8:30 AM 5.8173 µg/m3 on Saturday, January 21, 2017 9:00 AM 5.6738 µg/m3 on Saturday, January 21, 2017 9:30 AM 5.5507 µg/m3 on Saturday, January 21, 2017 10:00 AM 5.421 µg/m3 on Saturday, January 21, 2017 10:30 AM 5.2749 µg/m3 on Saturday, January 21, 2017 11:00 AM 5.1516 µg/m3 on Saturday, January 21, 2017 11:30 AM 5.1554 µg/m3 on Saturday, January 21, 2017 12:00 PM 5.1535 µg/m3 on Saturday, January 21, 2017 12:30 PM 5.0001 µg/m3 on Saturday, January 21, 2017 1:00 PM 4.8677 µg/m3 on Saturday, January 21, 2017 1:30 PM 4.7116 µg/m3 on Saturday, January 21, 2017 2:00 PM 4.6634 µg/m3 on Saturday, January 21, 2017 2:30 PM 4.6041 µg/m3 on Saturday, January 21, 2017 3:00 PM 4.4885 µg/m3 on Saturday, January 21, 2017 3:30 PM 4.5358 µg/m3 on Saturday, January 21, 2017 4:00 PM 4.519 µg/m3 on Saturday, January 21, 2017 4:30 PM 4.5019 µg/m3 on Saturday, January 21, 2017 5:00 PM 4.5168 µg/m3 on Saturday, January 21, 2017 5:30 PM 4.5196 µg/m3 on Saturday, January 21, 2017 6:00 PM 4.5583 µg/m3 on Saturday, January 21, 2017 6:30 PM 4.4601 µg/m3 on Saturday, January 21, 2017 7:00 PM 4.4132 µg/m3 on Saturday, January 21, 2017 7:30 PM 4.3048 µg/m3 on Saturday, January 21, 2017 8:00 PM 4.2182 µg/m3 on Saturday, January 21, 2017 8:30 PM 4.231 µg/m3 on Saturday, January 21, 2017 9:00 PM 4.2758 µg/m3 on Saturday, January 21, 2017 9:30 PM 4.3161 µg/m3 on Saturday, January 21, 2017 10:00 PM 4.3496 µg/m3 on Saturday, January 21, 2017 10:30 PM 4.4142 µg/m3 on Saturday, January 21, 2017 11:00 PM 4.4772 µg/m3 on Saturday, January 21, 2017 11:30 PM 4.4802 µg/m3 on Sunday, January 22, 2017 12:00 AM 4.5344 µg/m3 on Sunday, January 22, 2017 12:30 AM 4.6191 µg/m3 on Sunday, January 22, 2017 1:00 AM 4.7352 µg/m3 on Sunday, January 22, 2017 1:30 AM 4.8552 µg/m3 on Sunday, January 22, 2017 2:00 AM 4.9376 µg/m3 on Sunday, January 22, 2017 2:30 AM 5.0334 µg/m3 on Sunday, January 22, 2017 3:00 AM 5.1155 µg/m3 on Sunday, January 22, 2017 3:30 AM 5.2163 µg/m3 on Sunday, January 22, 2017 4:00 AM 5.3016 µg/m3 on Sunday, January 22, 2017 4:30 AM 5.3838 µg/m3 on Sunday, January 22, 2017 5:00 AM 5.4311 µg/m3 on Sunday, January 22, 2017 5:30 AM 5.5245 µg/m3 on Sunday, January 22, 2017 6:00 AM 5.6197 µg/m3 on Sunday, January 22, 2017 6:30 AM 5.6747 µg/m3 on Sunday, January 22, 2017 7:00 AM 5.7582 µg/m3 on Sunday, January 22, 2017 7:30 AM 5.876 µg/m3 on Sunday, January 22, 2017 8:00 AM 5.9274 µg/m3 on Sunday, January 22, 2017 8:30 AM 6.0289 µg/m3 on Sunday, January 22, 2017 9:00 AM 6.1395 µg/m3 on Sunday, January 22, 2017 9:30 AM 6.2318 µg/m3 on Sunday, January 22, 2017 10:00 AM 6.3535 µg/m3 on Sunday, January 22, 2017 10:30 AM 6.4252 µg/m3 on Sunday, January 22, 2017 11:00 AM 6.4232 µg/m3 on Sunday, January 22, 2017 11:30 AM 6.453 µg/m3 on Sunday, January 22, 2017 12:00 PM 6.4244 µg/m3 on Sunday, January 22, 2017 12:30 PM 6.4219 µg/m3 on Sunday, January 22, 2017 1:00 PM 6.4204 µg/m3 on Sunday, January 22, 2017 1:30 PM 6.4726 µg/m3 on Sunday, January 22, 2017 2:00 PM 6.5077 µg/m3 on Sunday, January 22, 2017 2:30 PM 6.5307 µg/m3 on Sunday, January 22, 2017 3:00 PM 6.4704 µg/m3 on Sunday, January 22, 2017 3:30 PM 6.3571 µg/m3 on Sunday, January 22, 2017 4:00 PM 6.3586 µg/m3 on Sunday, January 22, 2017 4:30 PM 1.3055 µg/m3 on Thursday, January 19, 2017 1:00 AM 1.3096 µg/m3 on Thursday, January 19, 2017 1:30 AM 1.353 µg/m3 on Thursday, January 19, 2017 2:00 AM 1.3604 µg/m3 on Thursday, January 19, 2017 2:30 AM 1.3604 µg/m3 on Thursday, January 19, 2017 3:00 AM 1.3584 µg/m3 on Thursday, January 19, 2017 3:30 AM 1.3865 µg/m3 on Thursday, January 19, 2017 4:00 AM 1.4318 µg/m3 on Thursday, January 19, 2017 4:30 AM 1.4728 µg/m3 on Thursday, January 19, 2017 5:00 AM 1.4814 µg/m3 on Thursday, January 19, 2017 5:30 AM 1.4901 µg/m3 on Thursday, January 19, 2017 6:00 AM 1.3927 µg/m3 on Thursday, January 19, 2017 6:30 AM 0.9437 µg/m3 on Thursday, January 19, 2017 7:00 AM 0.9646 µg/m3 on Thursday, January 19, 2017 7:30 AM 1.1949 µg/m3 on Thursday, January 19, 2017 8:00 AM 0.8991 µg/m3 on Thursday, January 19, 2017 8:30 AM 0.8322 µg/m3 on Thursday, January 19, 2017 9:00 AM 0.9361 µg/m3 on Thursday, January 19, 2017 9:30 AM 1.1123 µg/m3 on Thursday, January 19, 2017 10:00 AM 1.5193 µg/m3 on Thursday, January 19, 2017 10:30 AM 1.5154 µg/m3 on Thursday, January 19, 2017 11:00 AM 1.4852 µg/m3 on Thursday, January 19, 2017 11:30 AM 1.4083 µg/m3 on Thursday, January 19, 2017 12:00 PM 1.4389 µg/m3 on Thursday, January 19, 2017 12:30 PM 1.4038 µg/m3 on Thursday, January 19, 2017 1:00 PM 1.4429 µg/m3 on Thursday, January 19, 2017 1:30 PM 1.4736 µg/m3 on Thursday, January 19, 2017 2:00 PM 1.444 µg/m3 on Thursday, January 19, 2017 2:30 PM 1.3872 µg/m3 on Thursday, January 19, 2017 3:00 PM 1.3534 µg/m3 on Thursday, January 19, 2017 3:30 PM 1.3084 µg/m3 on Thursday, January 19, 2017 4:00 PM 1.2672 µg/m3 on Thursday, January 19, 2017 4:30 PM 1.2935 µg/m3 on Thursday, January 19, 2017 5:00 PM 1.3166 µg/m3 on Thursday, January 19, 2017 5:30 PM 1.2706 µg/m3 on Thursday, January 19, 2017 6:00 PM 1.2653 µg/m3 on Thursday, January 19, 2017 6:30 PM 1.3018 µg/m3 on Thursday, January 19, 2017 7:00 PM 1.4386 µg/m3 on Thursday, January 19, 2017 7:30 PM 1.4825 µg/m3 on Thursday, January 19, 2017 8:00 PM 1.6103 µg/m3 on Thursday, January 19, 2017 8:30 PM 1.659 µg/m3 on Thursday, January 19, 2017 9:00 PM 1.6839 µg/m3 on Thursday, January 19, 2017 9:30 PM 1.669 µg/m3 on Thursday, January 19, 2017 10:00 PM 1.5973 µg/m3 on Thursday, January 19, 2017 10:30 PM 1.6226 µg/m3 on Thursday, January 19, 2017 11:00 PM 1.7499 µg/m3 on Thursday, January 19, 2017 11:30 PM 1.7265 µg/m3 on Friday, January 20, 2017 12:00 AM 1.7342 µg/m3 on Friday, January 20, 2017 12:30 AM 1.7664 µg/m3 on Friday, January 20, 2017 1:00 AM 1.7163 µg/m3 on Friday, January 20, 2017 1:30 AM 1.6943 µg/m3 on Friday, January 20, 2017 2:00 AM 1.6847 µg/m3 on Friday, January 20, 2017 2:30 AM 1.6353 µg/m3 on Friday, January 20, 2017 3:00 AM 1.5557 µg/m3 on Friday, January 20, 2017 3:30 AM 1.5325 µg/m3 on Friday, January 20, 2017 4:00 AM 1.4599 µg/m3 on Friday, January 20, 2017 4:30 AM 1.4111 µg/m3 on Friday, January 20, 2017 5:00 AM 1.3601 µg/m3 on Friday, January 20, 2017 5:30 AM 1.324 µg/m3 on Friday, January 20, 2017 6:00 AM 1.4747 µg/m3 on Friday, January 20, 2017 6:30 AM 1.9049 µg/m3 on Friday, January 20, 2017 7:00 AM 1.8438 µg/m3 on Friday, January 20, 2017 7:30 AM 1.6815 µg/m3 on Friday, January 20, 2017 8:00 AM 1.8834 µg/m3 on Friday, January 20, 2017 8:30 AM 1.8353 µg/m3 on Friday, January 20, 2017 9:00 AM 1.7038 µg/m3 on Friday, January 20, 2017 9:30 AM 1.4542 µg/m3 on Friday, January 20, 2017 10:00 AM 1.0385 µg/m3 on Friday, January 20, 2017 10:30 AM 1.0283 µg/m3 on Friday, January 20, 2017 11:00 AM 1.0687 µg/m3 on Friday, January 20, 2017 11:30 AM 0.9812 µg/m3 on Friday, January 20, 2017 12:00 PM 0.887 µg/m3 on Friday, January 20, 2017 12:30 PM 0.8538 µg/m3 on Friday, January 20, 2017 1:00 PM 0.7916 µg/m3 on Friday, January 20, 2017 1:30 PM 0.76 µg/m3 on Friday, January 20, 2017 2:00 PM 0.7494 µg/m3 on Friday, January 20, 2017 2:30 PM 0.7521 µg/m3 on Friday, January 20, 2017 3:00 PM 0.749 µg/m3 on Friday, January 20, 2017 3:30 PM 0.8033 µg/m3 on Friday, January 20, 2017 4:00 PM 0.7357 µg/m3 on Friday, January 20, 2017 4:30 PM 0.6893 µg/m3 on Friday, January 20, 2017 5:00 PM 0.6598 µg/m3 on Friday, January 20, 2017 5:30 PM 0.6269 µg/m3 on Friday, January 20, 2017 6:00 PM 0.5984 µg/m3 on Friday, January 20, 2017 6:30 PM 0.5469 µg/m3 on Friday, January 20, 2017 7:00 PM 0.4066 µg/m3 on Friday, January 20, 2017 7:30 PM 0.4432 µg/m3 on Friday, January 20, 2017 8:00 PM 0.3493 µg/m3 on Friday, January 20, 2017 8:30 PM 0.3143 µg/m3 on Friday, January 20, 2017 9:00 PM 0.2969 µg/m3 on Friday, January 20, 2017 9:30 PM 0.3158 µg/m3 on Friday, January 20, 2017 10:00 PM 0.2789 µg/m3 on Friday, January 20, 2017 10:30 PM 0.2216 µg/m3 on Friday, January 20, 2017 11:00 PM 0.084 µg/m3 on Friday, January 20, 2017 11:30 PM 0.1732 µg/m3 on Saturday, January 21, 2017 12:00 AM 0.1596 µg/m3 on Saturday, January 21, 2017 12:30 AM 0.1686 µg/m3 on Saturday, January 21, 2017 1:00 AM 0.2619 µg/m3 on Saturday, January 21, 2017 1:30 AM 0.2853 µg/m3 on Saturday, January 21, 2017 2:00 AM 0.2616 µg/m3 on Saturday, January 21, 2017 2:30 AM 0.2523 µg/m3 on Saturday, January 21, 2017 3:00 AM 0.2836 µg/m3 on Saturday, January 21, 2017 3:30 AM 0.2633 µg/m3 on Saturday, January 21, 2017 4:00 AM 0.2554 µg/m3 on Saturday, January 21, 2017 4:30 AM 0.2599 µg/m3 on Saturday, January 21, 2017 5:00 AM 0.2593 µg/m3 on Saturday, January 21, 2017 5:30 AM 0.2344 µg/m3 on Saturday, January 21, 2017 6:00 AM 0.1469 µg/m3 on Saturday, January 21, 2017 6:30 AM 0.1416 µg/m3 on Saturday, January 21, 2017 7:00 AM 0.1775 µg/m3 on Saturday, January 21, 2017 7:30 AM 0.1779 µg/m3 on Saturday, January 21, 2017 8:00 AM 0.1982 µg/m3 on Saturday, January 21, 2017 8:30 AM 0.2326 µg/m3 on Saturday, January 21, 2017 9:00 AM 0.2151 µg/m3 on Saturday, January 21, 2017 9:30 AM 0.2007 µg/m3 on Saturday, January 21, 2017 10:00 AM 0.2025 µg/m3 on Saturday, January 21, 2017 10:30 AM 0.1823 µg/m3 on Saturday, January 21, 2017 11:00 AM 0.1912 µg/m3 on Saturday, January 21, 2017 11:30 AM 0.2705 µg/m3 on Saturday, January 21, 2017 12:00 PM 0.3643 µg/m3 on Saturday, January 21, 2017 12:30 PM 0.428 µg/m3 on Saturday, January 21, 2017 1:00 PM 0.4724 µg/m3 on Saturday, January 21, 2017 1:30 PM 0.4212 µg/m3 on Saturday, January 21, 2017 2:00 PM 0.4425 µg/m3 on Saturday, January 21, 2017 2:30 PM 0.4576 µg/m3 on Saturday, January 21, 2017 3:00 PM 0.4553 µg/m3 on Saturday, January 21, 2017 3:30 PM 0.4742 µg/m3 on Saturday, January 21, 2017 4:00 PM 0.488 µg/m3 on Saturday, January 21, 2017 4:30 PM 0.5099 µg/m3 on Saturday, January 21, 2017 5:00 PM 0.5406 µg/m3 on Saturday, January 21, 2017 5:30 PM 0.6115 µg/m3 on Saturday, January 21, 2017 6:00 PM 0.6502 µg/m3 on Saturday, January 21, 2017 6:30 PM 0.5976 µg/m3 on Saturday, January 21, 2017 7:00 PM 0.5896 µg/m3 on Saturday, January 21, 2017 7:30 PM 0.535 µg/m3 on Saturday, January 21, 2017 8:00 PM 0.5101 µg/m3 on Saturday, January 21, 2017 8:30 PM 0.5262 µg/m3 on Saturday, January 21, 2017 9:00 PM 0.5491 µg/m3 on Saturday, January 21, 2017 9:30 PM 0.5569 µg/m3 on Saturday, January 21, 2017 10:00 PM 0.5472 µg/m3 on Saturday, January 21, 2017 10:30 PM 0.5737 µg/m3 on Saturday, January 21, 2017 11:00 PM 0.6007 µg/m3 on Saturday, January 21, 2017 11:30 PM 0.5831 µg/m3 on Sunday, January 22, 2017 12:00 AM 0.6085 µg/m3 on Sunday, January 22, 2017 12:30 AM 0.6585 µg/m3 on Sunday, January 22, 2017 1:00 AM 0.7066 µg/m3 on Sunday, January 22, 2017 1:30 AM 0.785 µg/m3 on Sunday, January 22, 2017 2:00 AM 0.8407 µg/m3 on Sunday, January 22, 2017 2:30 AM 0.899 µg/m3 on Sunday, January 22, 2017 3:00 AM 0.9703 µg/m3 on Sunday, January 22, 2017 3:30 AM 1.049 µg/m3 on Sunday, January 22, 2017 4:00 AM 1.1116 µg/m3 on Sunday, January 22, 2017 4:30 AM 1.1793 µg/m3 on Sunday, January 22, 2017 5:00 AM 1.2151 µg/m3 on Sunday, January 22, 2017 5:30 AM 1.2918 µg/m3 on Sunday, January 22, 2017 6:00 AM 1.3649 µg/m3 on Sunday, January 22, 2017 6:30 AM 1.4042 µg/m3 on Sunday, January 22, 2017 7:00 AM 1.4736 µg/m3 on Sunday, January 22, 2017 7:30 AM 1.5536 µg/m3 on Sunday, January 22, 2017 8:00 AM 1.5899 µg/m3 on Sunday, January 22, 2017 8:30 AM 1.6526 µg/m3 on Sunday, January 22, 2017 9:00 AM 1.73 µg/m3 on Sunday, January 22, 2017 9:30 AM 1.7835 µg/m3 on Sunday, January 22, 2017 10:00 AM 1.8225 µg/m3 on Sunday, January 22, 2017 10:30 AM 1.8254 µg/m3 on Sunday, January 22, 2017 11:00 AM 1.8069 µg/m3 on Sunday, January 22, 2017 11:30 AM 1.8073 µg/m3 on Sunday, January 22, 2017 12:00 PM 1.7699 µg/m3 on Sunday, January 22, 2017 12:30 PM 1.7683 µg/m3 on Sunday, January 22, 2017 1:00 PM 1.7616 µg/m3 on Sunday, January 22, 2017 1:30 PM 1.8091 µg/m3 on Sunday, January 22, 2017 2:00 PM 1.8457 µg/m3 on Sunday, January 22, 2017 2:30 PM 1.8553 µg/m3 on Sunday, January 22, 2017 3:00 PM 1.8133 µg/m3 on Sunday, January 22, 2017 3:30 PM 1.7542 µg/m3 on Sunday, January 22, 2017 4:00 PM 1.757 µg/m3 on Sunday, January 22, 2017 4:30 PM
Date & TimePM 2.5 24-hour Average (µg/m3)PM 10 24-hour Average (µg/m3)
1/22/2017 3:30:00 PM (MST) 1.76 6.3586
1/22/2017 3:00:00 PM (MST) 1.75 6.3571
1/22/2017 2:30:00 PM (MST) 1.81 6.4704
1/22/2017 2:00:00 PM (MST) 1.86 6.5307
1/22/2017 1:30:00 PM (MST) 1.85 6.5077
1/22/2017 1:00:00 PM (MST) 1.81 6.4726
1/22/2017 12:30:00 PM (MST) 1.76 6.4204
1/22/2017 12:00:00 PM (MST) 1.77 6.4219
1/22/2017 11:30:00 AM (MST) 1.77 6.4244
1/22/2017 11:00:00 AM (MST) 1.81 6.453
1/22/2017 10:30:00 AM (MST) 1.81 6.4232
1/22/2017 10:00:00 AM (MST) 1.83 6.4252
1/22/2017 9:30:00 AM (MST) 1.82 6.3535
1/22/2017 9:00:00 AM (MST) 1.78 6.2318
1/22/2017 8:30:00 AM (MST) 1.73 6.1395
1/22/2017 8:00:00 AM (MST) 1.65 6.0289
1/22/2017 7:30:00 AM (MST) 1.59 5.9274
1/22/2017 7:00:00 AM (MST) 1.55 5.876
1/22/2017 6:30:00 AM (MST) 1.47 5.7582
1/22/2017 6:00:00 AM (MST) 1.4 5.6747
1/22/2017 5:30:00 AM (MST) 1.36 5.6197
1/22/2017 5:00:00 AM (MST) 1.29 5.5245
1/22/2017 4:30:00 AM (MST) 1.22 5.4311
1/22/2017 4:00:00 AM (MST) 1.18 5.3838
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