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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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10.7358 µg/m3 on Thursday, April 19, 2018 1:00 AM 11.1279 µg/m3 on Thursday, April 19, 2018 1:30 AM 11.4949 µg/m3 on Thursday, April 19, 2018 2:00 AM 11.5231 µg/m3 on Thursday, April 19, 2018 2:30 AM 11.8684 µg/m3 on Thursday, April 19, 2018 3:00 AM 12.3473 µg/m3 on Thursday, April 19, 2018 3:30 AM 12.4615 µg/m3 on Thursday, April 19, 2018 4:00 AM 12.8897 µg/m3 on Thursday, April 19, 2018 4:30 AM 12.9732 µg/m3 on Thursday, April 19, 2018 5:00 AM 13.3275 µg/m3 on Thursday, April 19, 2018 5:30 AM 13.5106 µg/m3 on Thursday, April 19, 2018 6:00 AM 13.7583 µg/m3 on Thursday, April 19, 2018 6:30 AM 13.8013 µg/m3 on Thursday, April 19, 2018 7:00 AM 14.165 µg/m3 on Thursday, April 19, 2018 7:30 AM 14.2354 µg/m3 on Thursday, April 19, 2018 8:00 AM 14.5479 µg/m3 on Thursday, April 19, 2018 8:30 AM 14.6097 µg/m3 on Thursday, April 19, 2018 9:00 AM 14.9196 µg/m3 on Thursday, April 19, 2018 9:30 AM 15.1213 µg/m3 on Thursday, April 19, 2018 10:00 AM 15.4905 µg/m3 on Thursday, April 19, 2018 10:30 AM 15.6452 µg/m3 on Thursday, April 19, 2018 11:00 AM 16.1288 µg/m3 on Thursday, April 19, 2018 11:30 AM 16.5325 µg/m3 on Thursday, April 19, 2018 12:00 PM 16.9623 µg/m3 on Thursday, April 19, 2018 12:30 PM 17.3594 µg/m3 on Thursday, April 19, 2018 1:00 PM 17.6913 µg/m3 on Thursday, April 19, 2018 1:30 PM 18.7448 µg/m3 on Thursday, April 19, 2018 2:00 PM 19.1967 µg/m3 on Thursday, April 19, 2018 2:30 PM 19.6928 µg/m3 on Thursday, April 19, 2018 3:00 PM 20.8238 µg/m3 on Thursday, April 19, 2018 3:30 PM 21.4647 µg/m3 on Thursday, April 19, 2018 4:00 PM 22.5574 µg/m3 on Thursday, April 19, 2018 4:30 PM 22.8103 µg/m3 on Thursday, April 19, 2018 5:00 PM 24.9123 µg/m3 on Thursday, April 19, 2018 5:30 PM 25.8249 µg/m3 on Thursday, April 19, 2018 6:00 PM 26.9718 µg/m3 on Thursday, April 19, 2018 6:30 PM 27.6127 µg/m3 on Thursday, April 19, 2018 7:00 PM 30.6266 µg/m3 on Thursday, April 19, 2018 7:30 PM 30.9408 µg/m3 on Thursday, April 19, 2018 8:00 PM 33.3602 µg/m3 on Thursday, April 19, 2018 8:30 PM 34.872 µg/m3 on Thursday, April 19, 2018 9:00 PM 35.9381 µg/m3 on Thursday, April 19, 2018 9:30 PM 38.5161 µg/m3 on Thursday, April 19, 2018 10:00 PM 38.5609 µg/m3 on Thursday, April 19, 2018 10:30 PM 39.4891 µg/m3 on Thursday, April 19, 2018 11:00 PM 43.2048 µg/m3 on Thursday, April 19, 2018 11:30 PM 44.9783 µg/m3 on Friday, April 20, 2018 12:00 AM 44.7016 µg/m3 on Friday, April 20, 2018 12:30 AM 47.4278 µg/m3 on Friday, April 20, 2018 1:00 AM 48.0658 µg/m3 on Friday, April 20, 2018 1:30 AM 49.3947 µg/m3 on Friday, April 20, 2018 2:00 AM 49.7855 µg/m3 on Friday, April 20, 2018 2:30 AM 51.0472 µg/m3 on Friday, April 20, 2018 3:00 AM 51.5927 µg/m3 on Friday, April 20, 2018 3:30 AM 52.1885 µg/m3 on Friday, April 20, 2018 4:00 AM 53.5384 µg/m3 on Friday, April 20, 2018 4:30 AM 53.6008 µg/m3 on Friday, April 20, 2018 5:00 AM 54.045 µg/m3 on Friday, April 20, 2018 5:30 AM 55.2004 µg/m3 on Friday, April 20, 2018 6:00 AM 55.8078 µg/m3 on Friday, April 20, 2018 6:30 AM 56.1584 µg/m3 on Friday, April 20, 2018 7:00 AM 56.9196 µg/m3 on Friday, April 20, 2018 7:30 AM 57.3714 µg/m3 on Friday, April 20, 2018 8:00 AM 57.299 µg/m3 on Friday, April 20, 2018 8:30 AM 57.9314 µg/m3 on Friday, April 20, 2018 9:00 AM 58.3381 µg/m3 on Friday, April 20, 2018 9:30 AM 59.0027 µg/m3 on Friday, April 20, 2018 10:00 AM 58.6163 µg/m3 on Friday, April 20, 2018 10:30 AM 59.4984 µg/m3 on Friday, April 20, 2018 11:00 AM 58.9407 µg/m3 on Friday, April 20, 2018 11:30 AM 59.7841 µg/m3 on Friday, April 20, 2018 12:00 PM 59.0249 µg/m3 on Friday, April 20, 2018 12:30 PM 59.2722 µg/m3 on Friday, April 20, 2018 1:00 PM 58.8243 µg/m3 on Friday, April 20, 2018 1:30 PM 59.2166 µg/m3 on Friday, April 20, 2018 2:00 PM 57.9222 µg/m3 on Friday, April 20, 2018 2:30 PM 58.2212 µg/m3 on Friday, April 20, 2018 3:00 PM 56.9532 µg/m3 on Friday, April 20, 2018 3:30 PM 57.4795 µg/m3 on Friday, April 20, 2018 4:00 PM 55.5856 µg/m3 on Friday, April 20, 2018 4:30 PM 54.7716 µg/m3 on Friday, April 20, 2018 5:00 PM 53.8361 µg/m3 on Friday, April 20, 2018 5:30 PM 53.7741 µg/m3 on Friday, April 20, 2018 6:00 PM 51.814 µg/m3 on Friday, April 20, 2018 6:30 PM 50.6755 µg/m3 on Friday, April 20, 2018 7:00 PM 49.2363 µg/m3 on Friday, April 20, 2018 7:30 PM 48.8171 µg/m3 on Friday, April 20, 2018 8:00 PM 46.4751 µg/m3 on Friday, April 20, 2018 8:30 PM 45.4875 µg/m3 on Friday, April 20, 2018 9:00 PM 43.6436 µg/m3 on Friday, April 20, 2018 9:30 PM 42.3683 µg/m3 on Friday, April 20, 2018 10:00 PM 40.9702 µg/m3 on Friday, April 20, 2018 10:30 PM 38.1767 µg/m3 on Friday, April 20, 2018 11:00 PM 36.4388 µg/m3 on Friday, April 20, 2018 11:30 PM 34.4743 µg/m3 on Saturday, April 21, 2018 12:00 AM 33.296 µg/m3 on Saturday, April 21, 2018 12:30 AM 30.6631 µg/m3 on Saturday, April 21, 2018 1:00 AM 29.7022 µg/m3 on Saturday, April 21, 2018 1:30 AM 28.0818 µg/m3 on Saturday, April 21, 2018 2:00 AM 27.1137 µg/m3 on Saturday, April 21, 2018 2:30 AM 25.4987 µg/m3 on Saturday, April 21, 2018 3:00 AM 24.8158 µg/m3 on Saturday, April 21, 2018 3:30 AM 23.5298 µg/m3 on Saturday, April 21, 2018 4:00 AM 22.6375 µg/m3 on Saturday, April 21, 2018 4:30 AM 22.4987 µg/m3 on Saturday, April 21, 2018 5:00 AM 20.79 µg/m3 on Saturday, April 21, 2018 5:30 AM 19.9862 µg/m3 on Saturday, April 21, 2018 6:00 AM 19.1563 µg/m3 on Saturday, April 21, 2018 6:30 AM 18.2664 µg/m3 on Saturday, April 21, 2018 7:00 AM 17.737 µg/m3 on Saturday, April 21, 2018 7:30 AM 17.3371 µg/m3 on Saturday, April 21, 2018 8:00 AM 16.6862 µg/m3 on Saturday, April 21, 2018 8:30 AM 15.7328 µg/m3 on Saturday, April 21, 2018 9:00 AM 15.2161 µg/m3 on Saturday, April 21, 2018 9:30 AM 14.8146 µg/m3 on Saturday, April 21, 2018 10:00 AM 14.2809 µg/m3 on Saturday, April 21, 2018 10:30 AM 13.9102 µg/m3 on Saturday, April 21, 2018 11:00 AM 13.4688 µg/m3 on Saturday, April 21, 2018 11:30 AM 13.0511 µg/m3 on Saturday, April 21, 2018 12:00 PM 12.5934 µg/m3 on Saturday, April 21, 2018 12:30 PM 12.0122 µg/m3 on Saturday, April 21, 2018 1:00 PM 11.7304 µg/m3 on Saturday, April 21, 2018 1:30 PM 11.5646 µg/m3 on Saturday, April 21, 2018 2:00 PM 11.1915 µg/m3 on Saturday, April 21, 2018 2:30 PM 10.8508 µg/m3 on Saturday, April 21, 2018 3:00 PM 10.9294 µg/m3 on Saturday, April 21, 2018 3:30 PM 10.9202 µg/m3 on Saturday, April 21, 2018 4:00 PM 10.839 µg/m3 on Saturday, April 21, 2018 4:30 PM 10.7277 µg/m3 on Saturday, April 21, 2018 5:00 PM 10.4704 µg/m3 on Saturday, April 21, 2018 5:30 PM 10.4327 µg/m3 on Saturday, April 21, 2018 6:00 PM 10.1976 µg/m3 on Saturday, April 21, 2018 6:30 PM 9.9967 µg/m3 on Saturday, April 21, 2018 7:00 PM 9.6424 µg/m3 on Saturday, April 21, 2018 7:30 PM 9.5617 µg/m3 on Saturday, April 21, 2018 8:00 PM 9.3067 µg/m3 on Saturday, April 21, 2018 8:30 PM 9.0814 µg/m3 on Saturday, April 21, 2018 9:00 PM 8.8003 µg/m3 on Saturday, April 21, 2018 9:30 PM 8.6776 µg/m3 on Saturday, April 21, 2018 10:00 PM 8.4813 µg/m3 on Saturday, April 21, 2018 10:30 PM 8.2963 µg/m3 on Saturday, April 21, 2018 11:00 PM 8.2439 µg/m3 on Saturday, April 21, 2018 11:30 PM 8.2422 µg/m3 on Sunday, April 22, 2018 12:00 AM 8.1413 µg/m3 on Sunday, April 22, 2018 12:30 AM 8.1836 µg/m3 on Sunday, April 22, 2018 1:00 AM 8.1436 µg/m3 on Sunday, April 22, 2018 1:30 AM 8.1547 µg/m3 on Sunday, April 22, 2018 2:00 AM 8.2262 µg/m3 on Sunday, April 22, 2018 2:30 AM 8.2238 µg/m3 on Sunday, April 22, 2018 3:00 AM 8.1997 µg/m3 on Sunday, April 22, 2018 3:30 AM 8.3253 µg/m3 on Sunday, April 22, 2018 4:00 AM 8.3379 µg/m3 on Sunday, April 22, 2018 4:30 AM 8.2861 µg/m3 on Sunday, April 22, 2018 5:00 AM 8.3724 µg/m3 on Sunday, April 22, 2018 5:30 AM 8.3383 µg/m3 on Sunday, April 22, 2018 6:00 AM 8.1979 µg/m3 on Sunday, April 22, 2018 6:30 AM 8.1659 µg/m3 on Sunday, April 22, 2018 7:00 AM 8.0436 µg/m3 on Sunday, April 22, 2018 7:30 AM 8.1051 µg/m3 on Sunday, April 22, 2018 8:00 AM 7.9601 µg/m3 on Sunday, April 22, 2018 8:30 AM 7.8138 µg/m3 on Sunday, April 22, 2018 9:00 AM 7.85 µg/m3 on Sunday, April 22, 2018 9:30 AM 7.7463 µg/m3 on Sunday, April 22, 2018 10:00 AM 7.8438 µg/m3 on Sunday, April 22, 2018 10:30 AM 7.6732 µg/m3 on Sunday, April 22, 2018 11:00 AM 7.4109 µg/m3 on Sunday, April 22, 2018 11:30 AM 7.4679 µg/m3 on Sunday, April 22, 2018 12:00 PM 7.1582 µg/m3 on Sunday, April 22, 2018 12:30 PM 7.3077 µg/m3 on Sunday, April 22, 2018 1:00 PM 6.9982 µg/m3 on Sunday, April 22, 2018 1:30 PM 7.1305 µg/m3 on Sunday, April 22, 2018 2:00 PM 1.6812 µg/m3 on Thursday, April 19, 2018 1:00 AM 1.7121 µg/m3 on Thursday, April 19, 2018 1:30 AM 1.817 µg/m3 on Thursday, April 19, 2018 2:00 AM 1.819 µg/m3 on Thursday, April 19, 2018 2:30 AM 1.8366 µg/m3 on Thursday, April 19, 2018 3:00 AM 1.8909 µg/m3 on Thursday, April 19, 2018 3:30 AM 1.906 µg/m3 on Thursday, April 19, 2018 4:00 AM 1.9748 µg/m3 on Thursday, April 19, 2018 4:30 AM 1.967 µg/m3 on Thursday, April 19, 2018 5:00 AM 1.9732 µg/m3 on Thursday, April 19, 2018 5:30 AM 2.0065 µg/m3 on Thursday, April 19, 2018 6:00 AM 2.0232 µg/m3 on Thursday, April 19, 2018 6:30 AM 2.0056 µg/m3 on Thursday, April 19, 2018 7:00 AM 2.0623 µg/m3 on Thursday, April 19, 2018 7:30 AM 2.0487 µg/m3 on Thursday, April 19, 2018 8:00 AM 2.112 µg/m3 on Thursday, April 19, 2018 8:30 AM 2.0962 µg/m3 on Thursday, April 19, 2018 9:00 AM 2.067 µg/m3 on Thursday, April 19, 2018 9:30 AM 2.13 µg/m3 on Thursday, April 19, 2018 10:00 AM 2.1777 µg/m3 on Thursday, April 19, 2018 10:30 AM 2.1368 µg/m3 on Thursday, April 19, 2018 11:00 AM 2.1852 µg/m3 on Thursday, April 19, 2018 11:30 AM 2.2648 µg/m3 on Thursday, April 19, 2018 12:00 PM 2.2985 µg/m3 on Thursday, April 19, 2018 12:30 PM 2.3214 µg/m3 on Thursday, April 19, 2018 1:00 PM 2.303 µg/m3 on Thursday, April 19, 2018 1:30 PM 2.453 µg/m3 on Thursday, April 19, 2018 2:00 PM 2.4667 µg/m3 on Thursday, April 19, 2018 2:30 PM 2.5446 µg/m3 on Thursday, April 19, 2018 3:00 PM 2.5843 µg/m3 on Thursday, April 19, 2018 3:30 PM 2.7043 µg/m3 on Thursday, April 19, 2018 4:00 PM 2.7033 µg/m3 on Thursday, April 19, 2018 4:30 PM 2.7554 µg/m3 on Thursday, April 19, 2018 5:00 PM 2.8547 µg/m3 on Thursday, April 19, 2018 5:30 PM 2.9593 µg/m3 on Thursday, April 19, 2018 6:00 PM 3.0583 µg/m3 on Thursday, April 19, 2018 6:30 PM 3.1074 µg/m3 on Thursday, April 19, 2018 7:00 PM 3.2717 µg/m3 on Thursday, April 19, 2018 7:30 PM 3.3435 µg/m3 on Thursday, April 19, 2018 8:00 PM 3.5117 µg/m3 on Thursday, April 19, 2018 8:30 PM 3.6063 µg/m3 on Thursday, April 19, 2018 9:00 PM 3.6529 µg/m3 on Thursday, April 19, 2018 9:30 PM 3.8062 µg/m3 on Thursday, April 19, 2018 10:00 PM 3.7405 µg/m3 on Thursday, April 19, 2018 10:30 PM 3.8052 µg/m3 on Thursday, April 19, 2018 11:00 PM 4.0099 µg/m3 on Thursday, April 19, 2018 11:30 PM 4.1619 µg/m3 on Friday, April 20, 2018 12:00 AM 4.134 µg/m3 on Friday, April 20, 2018 12:30 AM 4.3272 µg/m3 on Friday, April 20, 2018 1:00 AM 4.3753 µg/m3 on Friday, April 20, 2018 1:30 AM 4.5327 µg/m3 on Friday, April 20, 2018 2:00 AM 4.5538 µg/m3 on Friday, April 20, 2018 2:30 AM 4.7343 µg/m3 on Friday, April 20, 2018 3:00 AM 4.7362 µg/m3 on Friday, April 20, 2018 3:30 AM 4.8176 µg/m3 on Friday, April 20, 2018 4:00 AM 4.9033 µg/m3 on Friday, April 20, 2018 4:30 AM 4.9318 µg/m3 on Friday, April 20, 2018 5:00 AM 4.9394 µg/m3 on Friday, April 20, 2018 5:30 AM 5.0106 µg/m3 on Friday, April 20, 2018 6:00 AM 5.1146 µg/m3 on Friday, April 20, 2018 6:30 AM 5.1306 µg/m3 on Friday, April 20, 2018 7:00 AM 5.1514 µg/m3 on Friday, April 20, 2018 7:30 AM 5.4118 µg/m3 on Friday, April 20, 2018 8:00 AM 5.3655 µg/m3 on Friday, April 20, 2018 8:30 AM 5.3693 µg/m3 on Friday, April 20, 2018 9:00 AM 5.6056 µg/m3 on Friday, April 20, 2018 9:30 AM 5.6361 µg/m3 on Friday, April 20, 2018 10:00 AM 5.7636 µg/m3 on Friday, April 20, 2018 10:30 AM 5.7915 µg/m3 on Friday, April 20, 2018 11:00 AM 5.8998 µg/m3 on Friday, April 20, 2018 11:30 AM 6.0118 µg/m3 on Friday, April 20, 2018 12:00 PM 5.9924 µg/m3 on Friday, April 20, 2018 12:30 PM 6.0042 µg/m3 on Friday, April 20, 2018 1:00 PM 6.0639 µg/m3 on Friday, April 20, 2018 1:30 PM 6.0853 µg/m3 on Friday, April 20, 2018 2:00 PM 6.028 µg/m3 on Friday, April 20, 2018 2:30 PM 6.1171 µg/m3 on Friday, April 20, 2018 3:00 PM 5.9727 µg/m3 on Friday, April 20, 2018 3:30 PM 6.1102 µg/m3 on Friday, April 20, 2018 4:00 PM 5.9528 µg/m3 on Friday, April 20, 2018 4:30 PM 5.9469 µg/m3 on Friday, April 20, 2018 5:00 PM 5.9314 µg/m3 on Friday, April 20, 2018 5:30 PM 5.9822 µg/m3 on Friday, April 20, 2018 6:00 PM 5.8881 µg/m3 on Friday, April 20, 2018 6:30 PM 5.8325 µg/m3 on Friday, April 20, 2018 7:00 PM 5.7587 µg/m3 on Friday, April 20, 2018 7:30 PM 5.7591 µg/m3 on Friday, April 20, 2018 8:00 PM 5.6546 µg/m3 on Friday, April 20, 2018 8:30 PM 5.5133 µg/m3 on Friday, April 20, 2018 9:00 PM 5.4578 µg/m3 on Friday, April 20, 2018 9:30 PM 5.4236 µg/m3 on Friday, April 20, 2018 10:00 PM 5.3253 µg/m3 on Friday, April 20, 2018 10:30 PM 5.1097 µg/m3 on Friday, April 20, 2018 11:00 PM 4.9733 µg/m3 on Friday, April 20, 2018 11:30 PM 4.7783 µg/m3 on Saturday, April 21, 2018 12:00 AM 4.7006 µg/m3 on Saturday, April 21, 2018 12:30 AM 4.4398 µg/m3 on Saturday, April 21, 2018 1:00 AM 4.3522 µg/m3 on Saturday, April 21, 2018 1:30 AM 4.2199 µg/m3 on Saturday, April 21, 2018 2:00 AM 4.1494 µg/m3 on Saturday, April 21, 2018 2:30 AM 3.9367 µg/m3 on Saturday, April 21, 2018 3:00 AM 3.8766 µg/m3 on Saturday, April 21, 2018 3:30 AM 3.723 µg/m3 on Saturday, April 21, 2018 4:00 AM 3.6125 µg/m3 on Saturday, April 21, 2018 4:30 AM 3.6393 µg/m3 on Saturday, April 21, 2018 5:00 AM 3.504 µg/m3 on Saturday, April 21, 2018 5:30 AM 3.4994 µg/m3 on Saturday, April 21, 2018 6:00 AM 3.4724 µg/m3 on Saturday, April 21, 2018 6:30 AM 3.3875 µg/m3 on Saturday, April 21, 2018 7:00 AM 3.3508 µg/m3 on Saturday, April 21, 2018 7:30 AM 3.2936 µg/m3 on Saturday, April 21, 2018 8:00 AM 3.2257 µg/m3 on Saturday, April 21, 2018 8:30 AM 2.9947 µg/m3 on Saturday, April 21, 2018 9:00 AM 2.9392 µg/m3 on Saturday, April 21, 2018 9:30 AM 2.7961 µg/m3 on Saturday, April 21, 2018 10:00 AM 2.7738 µg/m3 on Saturday, April 21, 2018 10:30 AM 2.6898 µg/m3 on Saturday, April 21, 2018 11:00 AM 2.5613 µg/m3 on Saturday, April 21, 2018 11:30 AM 2.5018 µg/m3 on Saturday, April 21, 2018 12:00 PM 2.4939 µg/m3 on Saturday, April 21, 2018 12:30 PM 2.3978 µg/m3 on Saturday, April 21, 2018 1:00 PM 2.3527 µg/m3 on Saturday, April 21, 2018 1:30 PM 2.3669 µg/m3 on Saturday, April 21, 2018 2:00 PM 2.3073 µg/m3 on Saturday, April 21, 2018 2:30 PM 2.2371 µg/m3 on Saturday, April 21, 2018 3:00 PM 2.2853 µg/m3 on Saturday, April 21, 2018 3:30 PM 2.3184 µg/m3 on Saturday, April 21, 2018 4:00 PM 2.3102 µg/m3 on Saturday, April 21, 2018 4:30 PM 2.3063 µg/m3 on Saturday, April 21, 2018 5:00 PM 2.2689 µg/m3 on Saturday, April 21, 2018 5:30 PM 2.2936 µg/m3 on Saturday, April 21, 2018 6:00 PM 2.2133 µg/m3 on Saturday, April 21, 2018 6:30 PM 2.1523 µg/m3 on Saturday, April 21, 2018 7:00 PM 2.0735 µg/m3 on Saturday, April 21, 2018 7:30 PM 2.0806 µg/m3 on Saturday, April 21, 2018 8:00 PM 2.042 µg/m3 on Saturday, April 21, 2018 8:30 PM 1.965 µg/m3 on Saturday, April 21, 2018 9:00 PM 1.8888 µg/m3 on Saturday, April 21, 2018 9:30 PM 1.8394 µg/m3 on Saturday, April 21, 2018 10:00 PM 1.8789 µg/m3 on Saturday, April 21, 2018 10:30 PM 1.7958 µg/m3 on Saturday, April 21, 2018 11:00 PM 1.7853 µg/m3 on Saturday, April 21, 2018 11:30 PM 1.8394 µg/m3 on Sunday, April 22, 2018 12:00 AM 1.8208 µg/m3 on Sunday, April 22, 2018 12:30 AM 1.8531 µg/m3 on Sunday, April 22, 2018 1:00 AM 1.8483 µg/m3 on Sunday, April 22, 2018 1:30 AM 1.8682 µg/m3 on Sunday, April 22, 2018 2:00 AM 1.9004 µg/m3 on Sunday, April 22, 2018 2:30 AM 1.9257 µg/m3 on Sunday, April 22, 2018 3:00 AM 1.9073 µg/m3 on Sunday, April 22, 2018 3:30 AM 1.9935 µg/m3 on Sunday, April 22, 2018 4:00 AM 2.058 µg/m3 on Sunday, April 22, 2018 4:30 AM 2.0523 µg/m3 on Sunday, April 22, 2018 5:00 AM 2.0627 µg/m3 on Sunday, April 22, 2018 5:30 AM 2.112 µg/m3 on Sunday, April 22, 2018 6:00 AM 2.1079 µg/m3 on Sunday, April 22, 2018 6:30 AM 2.0949 µg/m3 on Sunday, April 22, 2018 7:00 AM 2.0529 µg/m3 on Sunday, April 22, 2018 7:30 AM 2.1238 µg/m3 on Sunday, April 22, 2018 8:00 AM 2.0521 µg/m3 on Sunday, April 22, 2018 8:30 AM 2.0072 µg/m3 on Sunday, April 22, 2018 9:00 AM 2.0624 µg/m3 on Sunday, April 22, 2018 9:30 AM 2.033 µg/m3 on Sunday, April 22, 2018 10:00 AM 2.1039 µg/m3 on Sunday, April 22, 2018 10:30 AM 2.0434 µg/m3 on Sunday, April 22, 2018 11:00 AM 1.9559 µg/m3 on Sunday, April 22, 2018 11:30 AM 1.9701 µg/m3 on Sunday, April 22, 2018 12:00 PM 1.8431 µg/m3 on Sunday, April 22, 2018 12:30 PM 1.9062 µg/m3 on Sunday, April 22, 2018 1:00 PM 1.7751 µg/m3 on Sunday, April 22, 2018 1:30 PM 1.8539 µg/m3 on Sunday, April 22, 2018 2:00 PM
Date & TimePM 2.5 24-hour Average (µg/m3)PM 10 24-hour Average (µg/m3)
4/22/2018 1:00:00 PM (MDT) 1.85 7.1305
4/22/2018 12:30:00 PM (MDT) 1.78 6.9982
4/22/2018 12:00:00 PM (MDT) 1.91 7.3077
4/22/2018 11:30:00 AM (MDT) 1.84 7.1582
4/22/2018 11:00:00 AM (MDT) 1.97 7.4679
4/22/2018 10:30:00 AM (MDT) 1.96 7.4109
4/22/2018 10:00:00 AM (MDT) 2.04 7.6732
4/22/2018 9:30:00 AM (MDT) 2.1 7.8438
4/22/2018 9:00:00 AM (MDT) 2.03 7.7463
4/22/2018 8:30:00 AM (MDT) 2.06 7.85
4/22/2018 8:00:00 AM (MDT) 2.01 7.8138
4/22/2018 7:30:00 AM (MDT) 2.05 7.9601
4/22/2018 7:00:00 AM (MDT) 2.12 8.1051
4/22/2018 6:30:00 AM (MDT) 2.05 8.0436
4/22/2018 6:00:00 AM (MDT) 2.09 8.1659
4/22/2018 5:30:00 AM (MDT) 2.11 8.1979
4/22/2018 5:00:00 AM (MDT) 2.11 8.3383
4/22/2018 4:30:00 AM (MDT) 2.06 8.3724
4/22/2018 4:00:00 AM (MDT) 2.05 8.2861
4/22/2018 3:30:00 AM (MDT) 2.06 8.3379
4/22/2018 3:00:00 AM (MDT) 1.99 8.3253
4/22/2018 2:30:00 AM (MDT) 1.91 8.1997
4/22/2018 2:00:00 AM (MDT) 1.93 8.2238
4/22/2018 1:30:00 AM (MDT) 1.9 8.2262
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