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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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4.7831 µg/m3 on Friday, February 16, 2018 1:00 AM 4.8264 µg/m3 on Friday, February 16, 2018 1:30 AM 4.849 µg/m3 on Friday, February 16, 2018 2:00 AM 4.9255 µg/m3 on Friday, February 16, 2018 2:30 AM 4.9473 µg/m3 on Friday, February 16, 2018 3:00 AM 4.9811 µg/m3 on Friday, February 16, 2018 3:30 AM 5.0049 µg/m3 on Friday, February 16, 2018 4:00 AM 5.0329 µg/m3 on Friday, February 16, 2018 4:30 AM 5.068 µg/m3 on Friday, February 16, 2018 5:00 AM 5.0596 µg/m3 on Friday, February 16, 2018 5:30 AM 5.1376 µg/m3 on Friday, February 16, 2018 6:00 AM 5.1199 µg/m3 on Friday, February 16, 2018 6:30 AM 5.1619 µg/m3 on Friday, February 16, 2018 7:00 AM 5.2269 µg/m3 on Friday, February 16, 2018 7:30 AM 5.229 µg/m3 on Friday, February 16, 2018 8:00 AM 5.3372 µg/m3 on Friday, February 16, 2018 8:30 AM 5.4334 µg/m3 on Friday, February 16, 2018 9:00 AM 5.5351 µg/m3 on Friday, February 16, 2018 9:30 AM 5.6247 µg/m3 on Friday, February 16, 2018 10:00 AM 5.7379 µg/m3 on Friday, February 16, 2018 10:30 AM 5.7591 µg/m3 on Friday, February 16, 2018 11:00 AM 5.7435 µg/m3 on Friday, February 16, 2018 11:30 AM 5.7968 µg/m3 on Friday, February 16, 2018 12:00 PM 5.7967 µg/m3 on Friday, February 16, 2018 12:30 PM 5.8677 µg/m3 on Friday, February 16, 2018 1:00 PM 5.931 µg/m3 on Friday, February 16, 2018 1:30 PM 5.9719 µg/m3 on Friday, February 16, 2018 2:00 PM 5.9344 µg/m3 on Friday, February 16, 2018 2:30 PM 5.8883 µg/m3 on Friday, February 16, 2018 3:00 PM 5.884 µg/m3 on Friday, February 16, 2018 3:30 PM 5.9234 µg/m3 on Friday, February 16, 2018 4:00 PM 5.9222 µg/m3 on Friday, February 16, 2018 4:30 PM 5.977 µg/m3 on Friday, February 16, 2018 5:00 PM 6.0564 µg/m3 on Friday, February 16, 2018 5:30 PM 6.0966 µg/m3 on Friday, February 16, 2018 6:00 PM 6.077 µg/m3 on Friday, February 16, 2018 6:30 PM 6.0869 µg/m3 on Friday, February 16, 2018 7:00 PM 6.0939 µg/m3 on Friday, February 16, 2018 7:30 PM 6.1113 µg/m3 on Friday, February 16, 2018 8:00 PM 6.1327 µg/m3 on Friday, February 16, 2018 8:30 PM 6.172 µg/m3 on Friday, February 16, 2018 9:00 PM 6.2206 µg/m3 on Friday, February 16, 2018 9:30 PM 6.2361 µg/m3 on Friday, February 16, 2018 10:00 PM 6.2604 µg/m3 on Friday, February 16, 2018 10:30 PM 6.2499 µg/m3 on Friday, February 16, 2018 11:00 PM 6.3479 µg/m3 on Friday, February 16, 2018 11:30 PM 6.3509 µg/m3 on Saturday, February 17, 2018 12:00 AM 6.4025 µg/m3 on Saturday, February 17, 2018 12:30 AM 6.4585 µg/m3 on Saturday, February 17, 2018 1:00 AM 6.5058 µg/m3 on Saturday, February 17, 2018 1:30 AM 6.5348 µg/m3 on Saturday, February 17, 2018 2:00 AM 6.524 µg/m3 on Saturday, February 17, 2018 2:30 AM 6.5447 µg/m3 on Saturday, February 17, 2018 3:00 AM 6.5766 µg/m3 on Saturday, February 17, 2018 3:30 AM 6.6265 µg/m3 on Saturday, February 17, 2018 4:00 AM 6.6508 µg/m3 on Saturday, February 17, 2018 4:30 AM 6.6918 µg/m3 on Saturday, February 17, 2018 5:00 AM 6.7217 µg/m3 on Saturday, February 17, 2018 5:30 AM 6.7516 µg/m3 on Saturday, February 17, 2018 6:00 AM 6.7845 µg/m3 on Saturday, February 17, 2018 6:30 AM 6.7914 µg/m3 on Saturday, February 17, 2018 7:00 AM 6.7943 µg/m3 on Saturday, February 17, 2018 7:30 AM 6.8051 µg/m3 on Saturday, February 17, 2018 8:00 AM 6.8031 µg/m3 on Saturday, February 17, 2018 8:30 AM 6.7554 µg/m3 on Saturday, February 17, 2018 9:00 AM 6.6504 µg/m3 on Saturday, February 17, 2018 9:30 AM 6.654 µg/m3 on Saturday, February 17, 2018 10:00 AM 6.5939 µg/m3 on Saturday, February 17, 2018 10:30 AM 6.6207 µg/m3 on Saturday, February 17, 2018 11:00 AM 6.6678 µg/m3 on Saturday, February 17, 2018 11:30 AM 6.6343 µg/m3 on Saturday, February 17, 2018 12:00 PM 6.6326 µg/m3 on Saturday, February 17, 2018 12:30 PM 6.5706 µg/m3 on Saturday, February 17, 2018 1:00 PM 6.566 µg/m3 on Saturday, February 17, 2018 1:30 PM 6.5552 µg/m3 on Saturday, February 17, 2018 2:00 PM 6.5907 µg/m3 on Saturday, February 17, 2018 2:30 PM 6.5603 µg/m3 on Saturday, February 17, 2018 3:00 PM 6.5837 µg/m3 on Saturday, February 17, 2018 3:30 PM 6.6336 µg/m3 on Saturday, February 17, 2018 4:00 PM 6.6581 µg/m3 on Saturday, February 17, 2018 4:30 PM 6.6851 µg/m3 on Saturday, February 17, 2018 5:00 PM 6.6998 µg/m3 on Saturday, February 17, 2018 5:30 PM 6.6027 µg/m3 on Saturday, February 17, 2018 6:00 PM 6.5681 µg/m3 on Saturday, February 17, 2018 6:30 PM 6.6144 µg/m3 on Saturday, February 17, 2018 7:00 PM 6.5686 µg/m3 on Saturday, February 17, 2018 7:30 PM 6.5286 µg/m3 on Saturday, February 17, 2018 8:00 PM 6.4853 µg/m3 on Saturday, February 17, 2018 8:30 PM 6.4267 µg/m3 on Saturday, February 17, 2018 9:00 PM 6.3611 µg/m3 on Saturday, February 17, 2018 9:30 PM 6.2967 µg/m3 on Saturday, February 17, 2018 10:00 PM 6.1864 µg/m3 on Saturday, February 17, 2018 10:30 PM 6.1319 µg/m3 on Saturday, February 17, 2018 11:00 PM 5.9623 µg/m3 on Saturday, February 17, 2018 11:30 PM 5.9347 µg/m3 on Sunday, February 18, 2018 12:00 AM 5.8636 µg/m3 on Sunday, February 18, 2018 12:30 AM 5.7969 µg/m3 on Sunday, February 18, 2018 1:00 AM 5.7121 µg/m3 on Sunday, February 18, 2018 1:30 AM 5.6399 µg/m3 on Sunday, February 18, 2018 2:00 AM 5.6132 µg/m3 on Sunday, February 18, 2018 2:30 AM 5.5843 µg/m3 on Sunday, February 18, 2018 3:00 AM 5.5705 µg/m3 on Sunday, February 18, 2018 3:30 AM 5.6039 µg/m3 on Sunday, February 18, 2018 4:00 AM 5.5858 µg/m3 on Sunday, February 18, 2018 4:30 AM 5.5767 µg/m3 on Sunday, February 18, 2018 5:00 AM 5.5774 µg/m3 on Sunday, February 18, 2018 5:30 AM 5.5443 µg/m3 on Sunday, February 18, 2018 6:00 AM 5.554 µg/m3 on Sunday, February 18, 2018 6:30 AM 5.5705 µg/m3 on Sunday, February 18, 2018 7:00 AM 5.5694 µg/m3 on Sunday, February 18, 2018 7:30 AM 5.5793 µg/m3 on Sunday, February 18, 2018 8:00 AM 5.5363 µg/m3 on Sunday, February 18, 2018 8:30 AM 5.5225 µg/m3 on Sunday, February 18, 2018 9:00 AM 5.5281 µg/m3 on Sunday, February 18, 2018 9:30 AM 5.4883 µg/m3 on Sunday, February 18, 2018 10:00 AM 5.5116 µg/m3 on Sunday, February 18, 2018 10:30 AM 5.455 µg/m3 on Sunday, February 18, 2018 11:00 AM 5.4428 µg/m3 on Sunday, February 18, 2018 11:30 AM 5.3293 µg/m3 on Sunday, February 18, 2018 12:00 PM 5.3644 µg/m3 on Sunday, February 18, 2018 12:30 PM 5.1847 µg/m3 on Sunday, February 18, 2018 1:00 PM 5.0052 µg/m3 on Sunday, February 18, 2018 1:30 PM 4.9928 µg/m3 on Sunday, February 18, 2018 2:00 PM 5.0801 µg/m3 on Sunday, February 18, 2018 2:30 PM 5.1006 µg/m3 on Sunday, February 18, 2018 3:00 PM 5.0238 µg/m3 on Sunday, February 18, 2018 3:30 PM 4.8964 µg/m3 on Sunday, February 18, 2018 4:00 PM 4.8054 µg/m3 on Sunday, February 18, 2018 4:30 PM 4.733 µg/m3 on Sunday, February 18, 2018 5:00 PM 4.6757 µg/m3 on Sunday, February 18, 2018 5:30 PM 4.7561 µg/m3 on Sunday, February 18, 2018 6:00 PM 4.7718 µg/m3 on Sunday, February 18, 2018 6:30 PM 4.637 µg/m3 on Sunday, February 18, 2018 7:00 PM 4.6023 µg/m3 on Sunday, February 18, 2018 7:30 PM 4.5978 µg/m3 on Sunday, February 18, 2018 8:00 PM 4.5783 µg/m3 on Sunday, February 18, 2018 8:30 PM 4.5707 µg/m3 on Sunday, February 18, 2018 9:00 PM 4.5833 µg/m3 on Sunday, February 18, 2018 9:30 PM 4.5562 µg/m3 on Sunday, February 18, 2018 10:00 PM 4.56 µg/m3 on Sunday, February 18, 2018 10:30 PM 4.5946 µg/m3 on Sunday, February 18, 2018 11:00 PM 4.6588 µg/m3 on Sunday, February 18, 2018 11:30 PM 4.693 µg/m3 on Monday, February 19, 2018 12:00 AM 4.7487 µg/m3 on Monday, February 19, 2018 12:30 AM 4.7998 µg/m3 on Monday, February 19, 2018 1:00 AM 4.8325 µg/m3 on Monday, February 19, 2018 1:30 AM 4.8789 µg/m3 on Monday, February 19, 2018 2:00 AM 4.8693 µg/m3 on Monday, February 19, 2018 2:30 AM 4.88 µg/m3 on Monday, February 19, 2018 3:00 AM 4.8205 µg/m3 on Monday, February 19, 2018 3:30 AM 4.7529 µg/m3 on Monday, February 19, 2018 4:00 AM 4.7368 µg/m3 on Monday, February 19, 2018 4:30 AM 4.665 µg/m3 on Monday, February 19, 2018 5:00 AM 4.6182 µg/m3 on Monday, February 19, 2018 5:30 AM 4.5658 µg/m3 on Monday, February 19, 2018 6:00 AM 4.5392 µg/m3 on Monday, February 19, 2018 6:30 AM 4.556 µg/m3 on Monday, February 19, 2018 7:00 AM 4.5684 µg/m3 on Monday, February 19, 2018 7:30 AM 4.5272 µg/m3 on Monday, February 19, 2018 8:00 AM 4.4715 µg/m3 on Monday, February 19, 2018 8:30 AM 4.398 µg/m3 on Monday, February 19, 2018 9:00 AM 4.3212 µg/m3 on Monday, February 19, 2018 9:30 AM 4.2631 µg/m3 on Monday, February 19, 2018 10:00 AM 4.2017 µg/m3 on Monday, February 19, 2018 10:30 AM 4.1945 µg/m3 on Monday, February 19, 2018 11:00 AM 4.2511 µg/m3 on Monday, February 19, 2018 11:30 AM 4.3684 µg/m3 on Monday, February 19, 2018 12:00 PM 4.366 µg/m3 on Monday, February 19, 2018 12:30 PM 4.5041 µg/m3 on Monday, February 19, 2018 1:00 PM 4.6464 µg/m3 on Monday, February 19, 2018 1:30 PM 5.0611 µg/m3 on Monday, February 19, 2018 2:00 PM 5.1464 µg/m3 on Monday, February 19, 2018 2:30 PM 5.4214 µg/m3 on Monday, February 19, 2018 3:00 PM 5.703 µg/m3 on Monday, February 19, 2018 3:30 PM 6.1905 µg/m3 on Monday, February 19, 2018 4:00 PM 6.8943 µg/m3 on Monday, February 19, 2018 4:30 PM 7.3034 µg/m3 on Monday, February 19, 2018 5:00 PM 7.8266 µg/m3 on Monday, February 19, 2018 5:30 PM 8.114 µg/m3 on Monday, February 19, 2018 6:00 PM 8.5684 µg/m3 on Monday, February 19, 2018 6:30 PM 0.9626 µg/m3 on Friday, February 16, 2018 1:00 AM 0.9902 µg/m3 on Friday, February 16, 2018 1:30 AM 1.0086 µg/m3 on Friday, February 16, 2018 2:00 AM 1.0646 µg/m3 on Friday, February 16, 2018 2:30 AM 1.0747 µg/m3 on Friday, February 16, 2018 3:00 AM 1.0939 µg/m3 on Friday, February 16, 2018 3:30 AM 1.1112 µg/m3 on Friday, February 16, 2018 4:00 AM 1.1331 µg/m3 on Friday, February 16, 2018 4:30 AM 1.1642 µg/m3 on Friday, February 16, 2018 5:00 AM 1.1615 µg/m3 on Friday, February 16, 2018 5:30 AM 1.2201 µg/m3 on Friday, February 16, 2018 6:00 AM 1.1968 µg/m3 on Friday, February 16, 2018 6:30 AM 1.2135 µg/m3 on Friday, February 16, 2018 7:00 AM 1.2529 µg/m3 on Friday, February 16, 2018 7:30 AM 1.2249 µg/m3 on Friday, February 16, 2018 8:00 AM 1.2813 µg/m3 on Friday, February 16, 2018 8:30 AM 1.313 µg/m3 on Friday, February 16, 2018 9:00 AM 1.3475 µg/m3 on Friday, February 16, 2018 9:30 AM 1.3993 µg/m3 on Friday, February 16, 2018 10:00 AM 1.4688 µg/m3 on Friday, February 16, 2018 10:30 AM 1.4486 µg/m3 on Friday, February 16, 2018 11:00 AM 1.4005 µg/m3 on Friday, February 16, 2018 11:30 AM 1.4012 µg/m3 on Friday, February 16, 2018 12:00 PM 1.3437 µg/m3 on Friday, February 16, 2018 12:30 PM 1.3581 µg/m3 on Friday, February 16, 2018 1:00 PM 1.3756 µg/m3 on Friday, February 16, 2018 1:30 PM 1.3844 µg/m3 on Friday, February 16, 2018 2:00 PM 1.3053 µg/m3 on Friday, February 16, 2018 2:30 PM 1.2501 µg/m3 on Friday, February 16, 2018 3:00 PM 1.2186 µg/m3 on Friday, February 16, 2018 3:30 PM 1.2402 µg/m3 on Friday, February 16, 2018 4:00 PM 1.196 µg/m3 on Friday, February 16, 2018 4:30 PM 1.1719 µg/m3 on Friday, February 16, 2018 5:00 PM 1.2198 µg/m3 on Friday, February 16, 2018 5:30 PM 1.244 µg/m3 on Friday, February 16, 2018 6:00 PM 1.2287 µg/m3 on Friday, February 16, 2018 6:30 PM 1.2515 µg/m3 on Friday, February 16, 2018 7:00 PM 1.2677 µg/m3 on Friday, February 16, 2018 7:30 PM 1.283 µg/m3 on Friday, February 16, 2018 8:00 PM 1.311 µg/m3 on Friday, February 16, 2018 8:30 PM 1.3357 µg/m3 on Friday, February 16, 2018 9:00 PM 1.3616 µg/m3 on Friday, February 16, 2018 9:30 PM 1.3536 µg/m3 on Friday, February 16, 2018 10:00 PM 1.3465 µg/m3 on Friday, February 16, 2018 10:30 PM 1.3106 µg/m3 on Friday, February 16, 2018 11:00 PM 1.3757 µg/m3 on Friday, February 16, 2018 11:30 PM 1.3541 µg/m3 on Saturday, February 17, 2018 12:00 AM 1.3749 µg/m3 on Saturday, February 17, 2018 12:30 AM 1.4031 µg/m3 on Saturday, February 17, 2018 1:00 AM 1.432 µg/m3 on Saturday, February 17, 2018 1:30 AM 1.4479 µg/m3 on Saturday, February 17, 2018 2:00 AM 1.429 µg/m3 on Saturday, February 17, 2018 2:30 AM 1.4289 µg/m3 on Saturday, February 17, 2018 3:00 AM 1.4427 µg/m3 on Saturday, February 17, 2018 3:30 AM 1.4708 µg/m3 on Saturday, February 17, 2018 4:00 AM 1.4796 µg/m3 on Saturday, February 17, 2018 4:30 AM 1.4952 µg/m3 on Saturday, February 17, 2018 5:00 AM 1.5001 µg/m3 on Saturday, February 17, 2018 5:30 AM 1.5243 µg/m3 on Saturday, February 17, 2018 6:00 AM 1.5483 µg/m3 on Saturday, February 17, 2018 6:30 AM 1.548 µg/m3 on Saturday, February 17, 2018 7:00 AM 1.5515 µg/m3 on Saturday, February 17, 2018 7:30 AM 1.5807 µg/m3 on Saturday, February 17, 2018 8:00 AM 1.5665 µg/m3 on Saturday, February 17, 2018 8:30 AM 1.5555 µg/m3 on Saturday, February 17, 2018 9:00 AM 1.5085 µg/m3 on Saturday, February 17, 2018 9:30 AM 1.525 µg/m3 on Saturday, February 17, 2018 10:00 AM 1.4698 µg/m3 on Saturday, February 17, 2018 10:30 AM 1.508 µg/m3 on Saturday, February 17, 2018 11:00 AM 1.5503 µg/m3 on Saturday, February 17, 2018 11:30 AM 1.5421 µg/m3 on Saturday, February 17, 2018 12:00 PM 1.5592 µg/m3 on Saturday, February 17, 2018 12:30 PM 1.5205 µg/m3 on Saturday, February 17, 2018 1:00 PM 1.5347 µg/m3 on Saturday, February 17, 2018 1:30 PM 1.5349 µg/m3 on Saturday, February 17, 2018 2:00 PM 1.5796 µg/m3 on Saturday, February 17, 2018 2:30 PM 1.5622 µg/m3 on Saturday, February 17, 2018 3:00 PM 1.5936 µg/m3 on Saturday, February 17, 2018 3:30 PM 1.6203 µg/m3 on Saturday, February 17, 2018 4:00 PM 1.6564 µg/m3 on Saturday, February 17, 2018 4:30 PM 1.6896 µg/m3 on Saturday, February 17, 2018 5:00 PM 1.7264 µg/m3 on Saturday, February 17, 2018 5:30 PM 1.6847 µg/m3 on Saturday, February 17, 2018 6:00 PM 1.6601 µg/m3 on Saturday, February 17, 2018 6:30 PM 1.6862 µg/m3 on Saturday, February 17, 2018 7:00 PM 1.631 µg/m3 on Saturday, February 17, 2018 7:30 PM 1.605 µg/m3 on Saturday, February 17, 2018 8:00 PM 1.5757 µg/m3 on Saturday, February 17, 2018 8:30 PM 1.5388 µg/m3 on Saturday, February 17, 2018 9:00 PM 1.5011 µg/m3 on Saturday, February 17, 2018 9:30 PM 1.4575 µg/m3 on Saturday, February 17, 2018 10:00 PM 1.3859 µg/m3 on Saturday, February 17, 2018 10:30 PM 1.3776 µg/m3 on Saturday, February 17, 2018 11:00 PM 1.2571 µg/m3 on Saturday, February 17, 2018 11:30 PM 1.2465 µg/m3 on Sunday, February 18, 2018 12:00 AM 1.1878 µg/m3 on Sunday, February 18, 2018 12:30 AM 1.14 µg/m3 on Sunday, February 18, 2018 1:00 AM 1.0682 µg/m3 on Sunday, February 18, 2018 1:30 AM 1.0098 µg/m3 on Sunday, February 18, 2018 2:00 AM 0.9892 µg/m3 on Sunday, February 18, 2018 2:30 AM 0.9651 µg/m3 on Sunday, February 18, 2018 3:00 AM 0.9372 µg/m3 on Sunday, February 18, 2018 3:30 AM 0.9406 µg/m3 on Sunday, February 18, 2018 4:00 AM 0.9201 µg/m3 on Sunday, February 18, 2018 4:30 AM 0.9223 µg/m3 on Sunday, February 18, 2018 5:00 AM 0.9279 µg/m3 on Sunday, February 18, 2018 5:30 AM 0.8988 µg/m3 on Sunday, February 18, 2018 6:00 AM 0.9021 µg/m3 on Sunday, February 18, 2018 6:30 AM 0.9409 µg/m3 on Sunday, February 18, 2018 7:00 AM 0.9431 µg/m3 on Sunday, February 18, 2018 7:30 AM 0.9525 µg/m3 on Sunday, February 18, 2018 8:00 AM 0.9555 µg/m3 on Sunday, February 18, 2018 8:30 AM 0.9585 µg/m3 on Sunday, February 18, 2018 9:00 AM 0.9715 µg/m3 on Sunday, February 18, 2018 9:30 AM 0.9359 µg/m3 on Sunday, February 18, 2018 10:00 AM 0.9846 µg/m3 on Sunday, February 18, 2018 10:30 AM 0.955 µg/m3 on Sunday, February 18, 2018 11:00 AM 0.9744 µg/m3 on Sunday, February 18, 2018 11:30 AM 0.8818 µg/m3 on Sunday, February 18, 2018 12:00 PM 0.9556 µg/m3 on Sunday, February 18, 2018 12:30 PM 0.8794 µg/m3 on Sunday, February 18, 2018 1:00 PM 0.7862 µg/m3 on Sunday, February 18, 2018 1:30 PM 0.7675 µg/m3 on Sunday, February 18, 2018 2:00 PM 0.768 µg/m3 on Sunday, February 18, 2018 2:30 PM 0.7764 µg/m3 on Sunday, February 18, 2018 3:00 PM 0.728 µg/m3 on Sunday, February 18, 2018 3:30 PM 0.6609 µg/m3 on Sunday, February 18, 2018 4:00 PM 0.597 µg/m3 on Sunday, February 18, 2018 4:30 PM 0.5547 µg/m3 on Sunday, February 18, 2018 5:00 PM 0.5062 µg/m3 on Sunday, February 18, 2018 5:30 PM 0.563 µg/m3 on Sunday, February 18, 2018 6:00 PM 0.577 µg/m3 on Sunday, February 18, 2018 6:30 PM 0.487 µg/m3 on Sunday, February 18, 2018 7:00 PM 0.4786 µg/m3 on Sunday, February 18, 2018 7:30 PM 0.473 µg/m3 on Sunday, February 18, 2018 8:00 PM 0.44 µg/m3 on Sunday, February 18, 2018 8:30 PM 0.4189 µg/m3 on Sunday, February 18, 2018 9:00 PM 0.4285 µg/m3 on Sunday, February 18, 2018 9:30 PM 0.4097 µg/m3 on Sunday, February 18, 2018 10:00 PM 0.4073 µg/m3 on Sunday, February 18, 2018 10:30 PM 0.4142 µg/m3 on Sunday, February 18, 2018 11:00 PM 0.4362 µg/m3 on Sunday, February 18, 2018 11:30 PM 0.4592 µg/m3 on Monday, February 19, 2018 12:00 AM 0.5004 µg/m3 on Monday, February 19, 2018 12:30 AM 0.5278 µg/m3 on Monday, February 19, 2018 1:00 AM 0.551 µg/m3 on Monday, February 19, 2018 1:30 AM 0.5869 µg/m3 on Monday, February 19, 2018 2:00 AM 0.5816 µg/m3 on Monday, February 19, 2018 2:30 AM 0.6047 µg/m3 on Monday, February 19, 2018 3:00 AM 0.6024 µg/m3 on Monday, February 19, 2018 3:30 AM 0.5702 µg/m3 on Monday, February 19, 2018 4:00 AM 0.573 µg/m3 on Monday, February 19, 2018 4:30 AM 0.5144 µg/m3 on Monday, February 19, 2018 5:00 AM 0.5045 µg/m3 on Monday, February 19, 2018 5:30 AM 0.4747 µg/m3 on Monday, February 19, 2018 6:00 AM 0.4548 µg/m3 on Monday, February 19, 2018 6:30 AM 0.4122 µg/m3 on Monday, February 19, 2018 7:00 AM 0.4005 µg/m3 on Monday, February 19, 2018 7:30 AM 0.361 µg/m3 on Monday, February 19, 2018 8:00 AM 0.3175 µg/m3 on Monday, February 19, 2018 8:30 AM 0.2551 µg/m3 on Monday, February 19, 2018 9:00 AM 0.1854 µg/m3 on Monday, February 19, 2018 9:30 AM 0.1399 µg/m3 on Monday, February 19, 2018 10:00 AM 0.0667 µg/m3 on Monday, February 19, 2018 10:30 AM 0.0283 µg/m3 on Monday, February 19, 2018 11:00 AM 0.0275 µg/m3 on Monday, February 19, 2018 11:30 AM 0.1121 µg/m3 on Monday, February 19, 2018 12:00 PM 0.0644 µg/m3 on Monday, February 19, 2018 12:30 PM 0.0797 µg/m3 on Monday, February 19, 2018 1:00 PM 0.0654 µg/m3 on Monday, February 19, 2018 1:30 PM 0.1786 µg/m3 on Monday, February 19, 2018 2:00 PM 0.1581 µg/m3 on Monday, February 19, 2018 2:30 PM 0.1577 µg/m3 on Monday, February 19, 2018 3:00 PM 0.141 µg/m3 on Monday, February 19, 2018 3:30 PM 0.1438 µg/m3 on Monday, February 19, 2018 4:00 PM 0.1862 µg/m3 on Monday, February 19, 2018 4:30 PM 0.1632 µg/m3 on Monday, February 19, 2018 5:00 PM 0.2111 µg/m3 on Monday, February 19, 2018 5:30 PM 0.1703 µg/m3 on Monday, February 19, 2018 6:00 PM 0.1981 µg/m3 on Monday, February 19, 2018 6:30 PM
Date & TimePM 2.5 24-hour Average (µg/m3)PM 10 24-hour Average (µg/m3)
2/19/2018 5:30:00 PM (MST) 0.2 8.5684
2/19/2018 5:00:00 PM (MST) 0.17 8.114
2/19/2018 4:30:00 PM (MST) 0.21 7.8266
2/19/2018 4:00:00 PM (MST) 0.16 7.3034
2/19/2018 3:30:00 PM (MST) 0.19 6.8943
2/19/2018 3:00:00 PM (MST) 0.14 6.1905
2/19/2018 2:30:00 PM (MST) 0.14 5.703
2/19/2018 2:00:00 PM (MST) 0.16 5.4214
2/19/2018 1:30:00 PM (MST) 0.16 5.1464
2/19/2018 1:00:00 PM (MST) 0.18 5.0611
2/19/2018 12:30:00 PM (MST) 0.07 4.6464
2/19/2018 12:00:00 PM (MST) 0.08 4.5041
2/19/2018 11:30:00 AM (MST) 0.06 4.366
2/19/2018 11:00:00 AM (MST) 0.11 4.3684
2/19/2018 10:30:00 AM (MST) 0.03 4.2511
2/19/2018 10:00:00 AM (MST) 0.03 4.1945
2/19/2018 9:30:00 AM (MST) 0.07 4.2017
2/19/2018 9:00:00 AM (MST) 0.14 4.2631
2/19/2018 8:30:00 AM (MST) 0.19 4.3212
2/19/2018 8:00:00 AM (MST) 0.26 4.398
2/19/2018 7:30:00 AM (MST) 0.32 4.4715
2/19/2018 7:00:00 AM (MST) 0.36 4.5272
2/19/2018 6:30:00 AM (MST) 0.4 4.5684
2/19/2018 6:00:00 AM (MST) 0.41 4.556
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