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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)
Select Start Date
MarchApril 2024May
SunMonTueWedThuFriSat
31123456
78910111213
14151617181920
21222324252627
2829301234
567891011
Select End Date
MarchApril 2024May
SunMonTueWedThuFriSat
31123456
78910111213
14151617181920
21222324252627
2829301234
567891011
9.1772 µg/m3 on Tuesday, April 23, 2024 1:00 AM 9.3639 µg/m3 on Tuesday, April 23, 2024 1:30 AM 9.3911 µg/m3 on Tuesday, April 23, 2024 2:00 AM 9.5243 µg/m3 on Tuesday, April 23, 2024 2:30 AM 9.6052 µg/m3 on Tuesday, April 23, 2024 3:00 AM 9.6513 µg/m3 on Tuesday, April 23, 2024 3:30 AM 9.741 µg/m3 on Tuesday, April 23, 2024 4:00 AM 9.9297 µg/m3 on Tuesday, April 23, 2024 4:30 AM 10.1129 µg/m3 on Tuesday, April 23, 2024 5:00 AM 10.2683 µg/m3 on Tuesday, April 23, 2024 5:30 AM 10.4534 µg/m3 on Tuesday, April 23, 2024 6:00 AM 10.5377 µg/m3 on Tuesday, April 23, 2024 6:30 AM 10.9767 µg/m3 on Tuesday, April 23, 2024 7:00 AM 11.0126 µg/m3 on Tuesday, April 23, 2024 7:30 AM 11.3172 µg/m3 on Tuesday, April 23, 2024 8:00 AM 11.5365 µg/m3 on Tuesday, April 23, 2024 8:30 AM 11.4769 µg/m3 on Tuesday, April 23, 2024 9:00 AM 11.877 µg/m3 on Tuesday, April 23, 2024 9:30 AM 11.6279 µg/m3 on Tuesday, April 23, 2024 10:00 AM 12.1477 µg/m3 on Tuesday, April 23, 2024 10:30 AM 12.3183 µg/m3 on Tuesday, April 23, 2024 11:00 AM 12.1849 µg/m3 on Tuesday, April 23, 2024 11:30 AM 12.4268 µg/m3 on Tuesday, April 23, 2024 12:00 PM 12.5066 µg/m3 on Tuesday, April 23, 2024 12:30 PM 12.6326 µg/m3 on Tuesday, April 23, 2024 1:00 PM 12.6951 µg/m3 on Tuesday, April 23, 2024 1:30 PM 12.8711 µg/m3 on Tuesday, April 23, 2024 2:00 PM 12.9004 µg/m3 on Tuesday, April 23, 2024 2:30 PM 13.0725 µg/m3 on Tuesday, April 23, 2024 3:00 PM 13.1505 µg/m3 on Tuesday, April 23, 2024 3:30 PM 13.264 µg/m3 on Tuesday, April 23, 2024 4:00 PM 13.4128 µg/m3 on Tuesday, April 23, 2024 4:30 PM 13.6521 µg/m3 on Tuesday, April 23, 2024 5:00 PM 13.7385 µg/m3 on Tuesday, April 23, 2024 5:30 PM 13.8553 µg/m3 on Tuesday, April 23, 2024 6:00 PM 13.7886 µg/m3 on Tuesday, April 23, 2024 6:30 PM 13.9198 µg/m3 on Tuesday, April 23, 2024 7:00 PM 14.0537 µg/m3 on Tuesday, April 23, 2024 7:30 PM 13.9962 µg/m3 on Tuesday, April 23, 2024 8:00 PM 14.1883 µg/m3 on Tuesday, April 23, 2024 8:30 PM 14.407 µg/m3 on Tuesday, April 23, 2024 9:00 PM 14.4277 µg/m3 on Tuesday, April 23, 2024 9:30 PM 14.6906 µg/m3 on Tuesday, April 23, 2024 10:00 PM 14.7866 µg/m3 on Tuesday, April 23, 2024 10:30 PM 15.2805 µg/m3 on Tuesday, April 23, 2024 11:00 PM 14.8689 µg/m3 on Tuesday, April 23, 2024 11:30 PM 15.1342 µg/m3 on Wednesday, April 24, 2024 12:00 AM 15.8223 µg/m3 on Wednesday, April 24, 2024 12:30 AM 16.2039 µg/m3 on Wednesday, April 24, 2024 1:00 AM 16.9428 µg/m3 on Wednesday, April 24, 2024 1:30 AM 17.038 µg/m3 on Wednesday, April 24, 2024 2:00 AM 17.9446 µg/m3 on Wednesday, April 24, 2024 2:30 AM 18.0919 µg/m3 on Wednesday, April 24, 2024 3:00 AM 18.5675 µg/m3 on Wednesday, April 24, 2024 3:30 AM 19.4766 µg/m3 on Wednesday, April 24, 2024 4:00 AM 19.727 µg/m3 on Wednesday, April 24, 2024 4:30 AM 20.6843 µg/m3 on Wednesday, April 24, 2024 5:00 AM 20.8431 µg/m3 on Wednesday, April 24, 2024 5:30 AM 21.6757 µg/m3 on Wednesday, April 24, 2024 6:00 AM 21.6759 µg/m3 on Wednesday, April 24, 2024 6:30 AM 22.3358 µg/m3 on Wednesday, April 24, 2024 7:00 AM 22.6244 µg/m3 on Wednesday, April 24, 2024 7:30 AM 22.993 µg/m3 on Wednesday, April 24, 2024 8:00 AM 23.174 µg/m3 on Wednesday, April 24, 2024 8:30 AM 23.7888 µg/m3 on Wednesday, April 24, 2024 9:00 AM 23.8197 µg/m3 on Wednesday, April 24, 2024 9:30 AM 24.4125 µg/m3 on Wednesday, April 24, 2024 10:00 AM 24.3741 µg/m3 on Wednesday, April 24, 2024 10:30 AM 24.9033 µg/m3 on Wednesday, April 24, 2024 11:00 AM 24.8987 µg/m3 on Wednesday, April 24, 2024 11:30 AM 24.899 µg/m3 on Wednesday, April 24, 2024 12:00 PM 25.0844 µg/m3 on Wednesday, April 24, 2024 12:30 PM 25.1714 µg/m3 on Wednesday, April 24, 2024 1:00 PM 24.738 µg/m3 on Wednesday, April 24, 2024 1:30 PM 24.9798 µg/m3 on Wednesday, April 24, 2024 2:00 PM 24.8355 µg/m3 on Wednesday, April 24, 2024 2:30 PM 25.0906 µg/m3 on Wednesday, April 24, 2024 3:00 PM 24.8309 µg/m3 on Wednesday, April 24, 2024 3:30 PM 25.2644 µg/m3 on Wednesday, April 24, 2024 4:00 PM 25.3076 µg/m3 on Wednesday, April 24, 2024 4:30 PM 25.1244 µg/m3 on Wednesday, April 24, 2024 5:00 PM 25.1204 µg/m3 on Wednesday, April 24, 2024 5:30 PM 25.3458 µg/m3 on Wednesday, April 24, 2024 6:00 PM 25.6318 µg/m3 on Wednesday, April 24, 2024 6:30 PM 25.5728 µg/m3 on Wednesday, April 24, 2024 7:00 PM 25.8961 µg/m3 on Wednesday, April 24, 2024 7:30 PM 25.7622 µg/m3 on Wednesday, April 24, 2024 8:00 PM 25.9044 µg/m3 on Wednesday, April 24, 2024 8:30 PM 25.9506 µg/m3 on Wednesday, April 24, 2024 9:00 PM 25.4829 µg/m3 on Wednesday, April 24, 2024 9:30 PM 25.3251 µg/m3 on Wednesday, April 24, 2024 10:00 PM 25.2458 µg/m3 on Wednesday, April 24, 2024 10:30 PM 25.385 µg/m3 on Wednesday, April 24, 2024 11:00 PM 24.7344 µg/m3 on Wednesday, April 24, 2024 11:30 PM 24.3453 µg/m3 on Thursday, April 25, 2024 12:00 AM 23.6343 µg/m3 on Thursday, April 25, 2024 12:30 AM 23.4756 µg/m3 on Thursday, April 25, 2024 1:00 AM 22.7316 µg/m3 on Thursday, April 25, 2024 1:30 AM 22.2181 µg/m3 on Thursday, April 25, 2024 2:00 AM 21.8928 µg/m3 on Thursday, April 25, 2024 2:30 AM 21.2112 µg/m3 on Thursday, April 25, 2024 3:00 AM 20.7861 µg/m3 on Thursday, April 25, 2024 3:30 AM 19.9621 µg/m3 on Thursday, April 25, 2024 4:00 AM 19.5371 µg/m3 on Thursday, April 25, 2024 4:30 AM 18.8262 µg/m3 on Thursday, April 25, 2024 5:00 AM 17.898 µg/m3 on Thursday, April 25, 2024 5:30 AM 17.4199 µg/m3 on Thursday, April 25, 2024 6:00 AM 16.6213 µg/m3 on Thursday, April 25, 2024 6:30 AM 16.3465 µg/m3 on Thursday, April 25, 2024 7:00 AM 15.6587 µg/m3 on Thursday, April 25, 2024 7:30 AM 15.3475 µg/m3 on Thursday, April 25, 2024 8:00 AM 15.001 µg/m3 on Thursday, April 25, 2024 8:30 AM 14.2518 µg/m3 on Thursday, April 25, 2024 9:00 AM 13.7286 µg/m3 on Thursday, April 25, 2024 9:30 AM 13.29 µg/m3 on Thursday, April 25, 2024 10:00 AM 12.9296 µg/m3 on Thursday, April 25, 2024 10:30 AM 12.4369 µg/m3 on Thursday, April 25, 2024 11:00 AM 12.0031 µg/m3 on Thursday, April 25, 2024 11:30 AM 11.7235 µg/m3 on Thursday, April 25, 2024 12:00 PM 11.2821 µg/m3 on Thursday, April 25, 2024 12:30 PM 11.326 µg/m3 on Thursday, April 25, 2024 1:00 PM 10.0897 µg/m3 on Thursday, April 25, 2024 1:30 PM 11.3645 µg/m3 on Thursday, April 25, 2024 2:00 PM 9.8961 µg/m3 on Thursday, April 25, 2024 2:30 PM 9.9898 µg/m3 on Thursday, April 25, 2024 3:00 PM 10.4563 µg/m3 on Thursday, April 25, 2024 3:30 PM 11.4561 µg/m3 on Thursday, April 25, 2024 4:00 PM 10.4499 µg/m3 on Thursday, April 25, 2024 4:30 PM 11.1735 µg/m3 on Thursday, April 25, 2024 5:00 PM 13.3055 µg/m3 on Thursday, April 25, 2024 5:30 PM 11.1258 µg/m3 on Thursday, April 25, 2024 6:00 PM 13.2324 µg/m3 on Thursday, April 25, 2024 6:30 PM 13.1728 µg/m3 on Thursday, April 25, 2024 7:00 PM 13.0397 µg/m3 on Thursday, April 25, 2024 7:30 PM 12.7229 µg/m3 on Thursday, April 25, 2024 8:00 PM 12.6228 µg/m3 on Thursday, April 25, 2024 8:30 PM 12.5266 µg/m3 on Thursday, April 25, 2024 9:00 PM 12.5523 µg/m3 on Thursday, April 25, 2024 9:30 PM 12.3998 µg/m3 on Thursday, April 25, 2024 10:00 PM 12.5687 µg/m3 on Thursday, April 25, 2024 10:30 PM 12.5585 µg/m3 on Thursday, April 25, 2024 11:00 PM 12.6658 µg/m3 on Thursday, April 25, 2024 11:30 PM 12.6359 µg/m3 on Friday, April 26, 2024 12:00 AM 12.7683 µg/m3 on Friday, April 26, 2024 12:30 AM 12.8542 µg/m3 on Friday, April 26, 2024 1:00 AM 12.881 µg/m3 on Friday, April 26, 2024 1:30 AM 12.8014 µg/m3 on Friday, April 26, 2024 2:00 AM 12.7854 µg/m3 on Friday, April 26, 2024 2:30 AM 12.8269 µg/m3 on Friday, April 26, 2024 3:00 AM 12.9192 µg/m3 on Friday, April 26, 2024 3:30 AM 12.8717 µg/m3 on Friday, April 26, 2024 4:00 AM 13.0599 µg/m3 on Friday, April 26, 2024 4:30 AM 13.0717 µg/m3 on Friday, April 26, 2024 5:00 AM 13.0948 µg/m3 on Friday, April 26, 2024 5:30 AM 13.256 µg/m3 on Friday, April 26, 2024 6:00 AM 13.1136 µg/m3 on Friday, April 26, 2024 6:30 AM 13.2149 µg/m3 on Friday, April 26, 2024 7:00 AM 13.1427 µg/m3 on Friday, April 26, 2024 7:30 AM 13.2443 µg/m3 on Friday, April 26, 2024 8:00 AM 13.0632 µg/m3 on Friday, April 26, 2024 8:30 AM 12.9702 µg/m3 on Friday, April 26, 2024 9:00 AM 12.7838 µg/m3 on Friday, April 26, 2024 9:30 AM 1.8056 µg/m3 on Tuesday, April 23, 2024 1:00 AM 1.9675 µg/m3 on Tuesday, April 23, 2024 1:30 AM 1.9601 µg/m3 on Tuesday, April 23, 2024 2:00 AM 2.0757 µg/m3 on Tuesday, April 23, 2024 2:30 AM 2.0829 µg/m3 on Tuesday, April 23, 2024 3:00 AM 2.1486 µg/m3 on Tuesday, April 23, 2024 3:30 AM 2.1854 µg/m3 on Tuesday, April 23, 2024 4:00 AM 2.2839 µg/m3 on Tuesday, April 23, 2024 4:30 AM 2.3782 µg/m3 on Tuesday, April 23, 2024 5:00 AM 2.404 µg/m3 on Tuesday, April 23, 2024 5:30 AM 2.5355 µg/m3 on Tuesday, April 23, 2024 6:00 AM 2.5416 µg/m3 on Tuesday, April 23, 2024 6:30 AM 2.7397 µg/m3 on Tuesday, April 23, 2024 7:00 AM 2.7258 µg/m3 on Tuesday, April 23, 2024 7:30 AM 2.8398 µg/m3 on Tuesday, April 23, 2024 8:00 AM 2.9408 µg/m3 on Tuesday, April 23, 2024 8:30 AM 2.8295 µg/m3 on Tuesday, April 23, 2024 9:00 AM 3.0477 µg/m3 on Tuesday, April 23, 2024 9:30 AM 2.9098 µg/m3 on Tuesday, April 23, 2024 10:00 AM 3.0578 µg/m3 on Tuesday, April 23, 2024 10:30 AM 3.1327 µg/m3 on Tuesday, April 23, 2024 11:00 AM 3.1508 µg/m3 on Tuesday, April 23, 2024 11:30 AM 3.2494 µg/m3 on Tuesday, April 23, 2024 12:00 PM 3.253 µg/m3 on Tuesday, April 23, 2024 12:30 PM 3.3255 µg/m3 on Tuesday, April 23, 2024 1:00 PM 3.347 µg/m3 on Tuesday, April 23, 2024 1:30 PM 3.4018 µg/m3 on Tuesday, April 23, 2024 2:00 PM 3.3942 µg/m3 on Tuesday, April 23, 2024 2:30 PM 3.5114 µg/m3 on Tuesday, April 23, 2024 3:00 PM 3.5154 µg/m3 on Tuesday, April 23, 2024 3:30 PM 3.5444 µg/m3 on Tuesday, April 23, 2024 4:00 PM 3.604 µg/m3 on Tuesday, April 23, 2024 4:30 PM 3.7148 µg/m3 on Tuesday, April 23, 2024 5:00 PM 3.7686 µg/m3 on Tuesday, April 23, 2024 5:30 PM 3.8485 µg/m3 on Tuesday, April 23, 2024 6:00 PM 3.792 µg/m3 on Tuesday, April 23, 2024 6:30 PM 3.8402 µg/m3 on Tuesday, April 23, 2024 7:00 PM 3.9305 µg/m3 on Tuesday, April 23, 2024 7:30 PM 3.8376 µg/m3 on Tuesday, April 23, 2024 8:00 PM 3.8992 µg/m3 on Tuesday, April 23, 2024 8:30 PM 3.9369 µg/m3 on Tuesday, April 23, 2024 9:00 PM 3.949 µg/m3 on Tuesday, April 23, 2024 9:30 PM 3.9285 µg/m3 on Tuesday, April 23, 2024 10:00 PM 3.9581 µg/m3 on Tuesday, April 23, 2024 10:30 PM 3.9453 µg/m3 on Tuesday, April 23, 2024 11:00 PM 3.7685 µg/m3 on Tuesday, April 23, 2024 11:30 PM 3.8896 µg/m3 on Wednesday, April 24, 2024 12:00 AM 3.9549 µg/m3 on Wednesday, April 24, 2024 12:30 AM 3.9787 µg/m3 on Wednesday, April 24, 2024 1:00 AM 3.9967 µg/m3 on Wednesday, April 24, 2024 1:30 AM 3.9643 µg/m3 on Wednesday, April 24, 2024 2:00 AM 4.074 µg/m3 on Wednesday, April 24, 2024 2:30 AM 4.0788 µg/m3 on Wednesday, April 24, 2024 3:00 AM 4.0886 µg/m3 on Wednesday, April 24, 2024 3:30 AM 4.224 µg/m3 on Wednesday, April 24, 2024 4:00 AM 4.2485 µg/m3 on Wednesday, April 24, 2024 4:30 AM 4.3746 µg/m3 on Wednesday, April 24, 2024 5:00 AM 4.3734 µg/m3 on Wednesday, April 24, 2024 5:30 AM 4.3713 µg/m3 on Wednesday, April 24, 2024 6:00 AM 4.3147 µg/m3 on Wednesday, April 24, 2024 6:30 AM 4.324 µg/m3 on Wednesday, April 24, 2024 7:00 AM 4.3229 µg/m3 on Wednesday, April 24, 2024 7:30 AM 4.3071 µg/m3 on Wednesday, April 24, 2024 8:00 AM 4.2937 µg/m3 on Wednesday, April 24, 2024 8:30 AM 4.3472 µg/m3 on Wednesday, April 24, 2024 9:00 AM 4.2638 µg/m3 on Wednesday, April 24, 2024 9:30 AM 4.3322 µg/m3 on Wednesday, April 24, 2024 10:00 AM 4.2776 µg/m3 on Wednesday, April 24, 2024 10:30 AM 4.3113 µg/m3 on Wednesday, April 24, 2024 11:00 AM 4.2544 µg/m3 on Wednesday, April 24, 2024 11:30 AM 4.1837 µg/m3 on Wednesday, April 24, 2024 12:00 PM 4.1826 µg/m3 on Wednesday, April 24, 2024 12:30 PM 4.133 µg/m3 on Wednesday, April 24, 2024 1:00 PM 3.9526 µg/m3 on Wednesday, April 24, 2024 1:30 PM 3.9803 µg/m3 on Wednesday, April 24, 2024 2:00 PM 3.9147 µg/m3 on Wednesday, April 24, 2024 2:30 PM 3.9961 µg/m3 on Wednesday, April 24, 2024 3:00 PM 3.8434 µg/m3 on Wednesday, April 24, 2024 3:30 PM 3.9314 µg/m3 on Wednesday, April 24, 2024 4:00 PM 3.9205 µg/m3 on Wednesday, April 24, 2024 4:30 PM 3.8063 µg/m3 on Wednesday, April 24, 2024 5:00 PM 3.7917 µg/m3 on Wednesday, April 24, 2024 5:30 PM 3.8357 µg/m3 on Wednesday, April 24, 2024 6:00 PM 3.8682 µg/m3 on Wednesday, April 24, 2024 6:30 PM 3.8032 µg/m3 on Wednesday, April 24, 2024 7:00 PM 3.8842 µg/m3 on Wednesday, April 24, 2024 7:30 PM 3.8247 µg/m3 on Wednesday, April 24, 2024 8:00 PM 3.7715 µg/m3 on Wednesday, April 24, 2024 8:30 PM 3.8264 µg/m3 on Wednesday, April 24, 2024 9:00 PM 3.702 µg/m3 on Wednesday, April 24, 2024 9:30 PM 3.6519 µg/m3 on Wednesday, April 24, 2024 10:00 PM 3.6444 µg/m3 on Wednesday, April 24, 2024 10:30 PM 3.6107 µg/m3 on Wednesday, April 24, 2024 11:00 PM 3.4493 µg/m3 on Wednesday, April 24, 2024 11:30 PM 3.3169 µg/m3 on Thursday, April 25, 2024 12:00 AM 3.2125 µg/m3 on Thursday, April 25, 2024 12:30 AM 3.1784 µg/m3 on Thursday, April 25, 2024 1:00 AM 3.0808 µg/m3 on Thursday, April 25, 2024 1:30 AM 2.975 µg/m3 on Thursday, April 25, 2024 2:00 AM 2.8576 µg/m3 on Thursday, April 25, 2024 2:30 AM 2.8252 µg/m3 on Thursday, April 25, 2024 3:00 AM 2.7053 µg/m3 on Thursday, April 25, 2024 3:30 AM 2.5344 µg/m3 on Thursday, April 25, 2024 4:00 AM 2.4617 µg/m3 on Thursday, April 25, 2024 4:30 AM 2.302 µg/m3 on Thursday, April 25, 2024 5:00 AM 2.2129 µg/m3 on Thursday, April 25, 2024 5:30 AM 2.0974 µg/m3 on Thursday, April 25, 2024 6:00 AM 1.9955 µg/m3 on Thursday, April 25, 2024 6:30 AM 1.9683 µg/m3 on Thursday, April 25, 2024 7:00 AM 1.8328 µg/m3 on Thursday, April 25, 2024 7:30 AM 1.8731 µg/m3 on Thursday, April 25, 2024 8:00 AM 1.8009 µg/m3 on Thursday, April 25, 2024 8:30 AM 1.5913 µg/m3 on Thursday, April 25, 2024 9:00 AM 1.4962 µg/m3 on Thursday, April 25, 2024 9:30 AM 1.3585 µg/m3 on Thursday, April 25, 2024 10:00 AM 1.3047 µg/m3 on Thursday, April 25, 2024 10:30 AM 1.253 µg/m3 on Thursday, April 25, 2024 11:00 AM 1.0872 µg/m3 on Thursday, April 25, 2024 11:30 AM 1.0399 µg/m3 on Thursday, April 25, 2024 12:00 PM 0.9393 µg/m3 on Thursday, April 25, 2024 12:30 PM 0.9455 µg/m3 on Thursday, April 25, 2024 1:00 PM 0 µg/m3 on Thursday, April 25, 2024 1:30 PM 1.2164 µg/m3 on Thursday, April 25, 2024 2:00 PM 0 µg/m3 on Thursday, April 25, 2024 2:30 PM 0 µg/m3 on Thursday, April 25, 2024 3:00 PM 0 µg/m3 on Thursday, April 25, 2024 3:30 PM 0.0358 µg/m3 on Thursday, April 25, 2024 4:00 PM 0.0144 µg/m3 on Thursday, April 25, 2024 4:30 PM 0.2816 µg/m3 on Thursday, April 25, 2024 5:00 PM 0.2015 µg/m3 on Thursday, April 25, 2024 5:30 PM 0 µg/m3 on Thursday, April 25, 2024 6:00 PM 0.2132 µg/m3 on Thursday, April 25, 2024 6:30 PM 0.2599 µg/m3 on Thursday, April 25, 2024 7:00 PM 0.1146 µg/m3 on Thursday, April 25, 2024 7:30 PM 0.1126 µg/m3 on Thursday, April 25, 2024 8:00 PM 0.0269 µg/m3 on Thursday, April 25, 2024 8:30 PM 0.1537 µg/m3 on Thursday, April 25, 2024 9:00 PM 0.1626 µg/m3 on Thursday, April 25, 2024 9:30 PM 0.1856 µg/m3 on Thursday, April 25, 2024 10:00 PM 0.2315 µg/m3 on Thursday, April 25, 2024 10:30 PM 0.2613 µg/m3 on Thursday, April 25, 2024 11:00 PM 0.3314 µg/m3 on Thursday, April 25, 2024 11:30 PM 0.2093 µg/m3 on Friday, April 26, 2024 12:00 AM 0.3803 µg/m3 on Friday, April 26, 2024 12:30 AM 0.3471 µg/m3 on Friday, April 26, 2024 1:00 AM 0.3273 µg/m3 on Friday, April 26, 2024 1:30 AM 0.3404 µg/m3 on Friday, April 26, 2024 2:00 AM 0.2346 µg/m3 on Friday, April 26, 2024 2:30 AM 0.3159 µg/m3 on Friday, April 26, 2024 3:00 AM 0.3345 µg/m3 on Friday, April 26, 2024 3:30 AM 0.3799 µg/m3 on Friday, April 26, 2024 4:00 AM 0.4317 µg/m3 on Friday, April 26, 2024 4:30 AM 0.4359 µg/m3 on Friday, April 26, 2024 5:00 AM 0.5015 µg/m3 on Friday, April 26, 2024 5:30 AM 0.526 µg/m3 on Friday, April 26, 2024 6:00 AM 0.4966 µg/m3 on Friday, April 26, 2024 6:30 AM 0.4951 µg/m3 on Friday, April 26, 2024 7:00 AM 0.5474 µg/m3 on Friday, April 26, 2024 7:30 AM 0.5638 µg/m3 on Friday, April 26, 2024 8:00 AM 0.5801 µg/m3 on Friday, April 26, 2024 8:30 AM 0.6356 µg/m3 on Friday, April 26, 2024 9:00 AM 0.4361 µg/m3 on Friday, April 26, 2024 9:30 AM
Date & TimePM 2.5 24-hour Average (µg/m3)PM 10 24-hour Average (µg/m3)
4/26/2024 8:30:00 AM (MDT) 0.44 12.7838
4/26/2024 8:00:00 AM (MDT) 0.64 12.9702
4/26/2024 7:30:00 AM (MDT) 0.58 13.0632
4/26/2024 7:00:00 AM (MDT) 0.56 13.2443
4/26/2024 6:30:00 AM (MDT) 0.55 13.1427
4/26/2024 6:00:00 AM (MDT) 0.5 13.2149
4/26/2024 5:30:00 AM (MDT) 0.5 13.1136
4/26/2024 5:00:00 AM (MDT) 0.53 13.256
4/26/2024 4:30:00 AM (MDT) 0.5 13.0948
4/26/2024 4:00:00 AM (MDT) 0.44 13.0717
4/26/2024 3:30:00 AM (MDT) 0.43 13.0599
4/26/2024 3:00:00 AM (MDT) 0.38 12.8717
4/26/2024 2:30:00 AM (MDT) 0.33 12.9192
4/26/2024 2:00:00 AM (MDT) 0.32 12.8269
4/26/2024 1:30:00 AM (MDT) 0.23 12.7854
4/26/2024 1:00:00 AM (MDT) 0.34 12.8014
4/26/2024 12:30:00 AM (MDT) 0.33 12.881
4/26/2024 12:00:00 AM (MDT) 0.35 12.8542
4/25/2024 11:30:00 PM (MDT) 0.38 12.7683
4/25/2024 11:00:00 PM (MDT) 0.21 12.6359
4/25/2024 10:30:00 PM (MDT) 0.33 12.6658
4/25/2024 10:00:00 PM (MDT) 0.26 12.5585
4/25/2024 9:30:00 PM (MDT) 0.23 12.5687
4/25/2024 9:00:00 PM (MDT) 0.19 12.3998
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