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The following are ambient air particle counts measured in NW Calgary by AirVironment Canada using the Met One Instruments 804 Particle Counter. The table will continue to be updated on a regular basis.
Ambient Particle Concentrations for Various Particle Sizes (particles per cubic foot)
Date / Time 
0.3 µm
0.5 µm
2.5 µm
5.0 µm
Aug 11, 2018 / 05:28
11,675,720
3,393,610
8,090
1,430
Aug 13, 2018 / 07:32
594,200
38,480
1,180
240
Aug 15, 2018 / 06:11
11,902,800
4,958,750
3,410
560
Aug 16, 2018 / 07:34
11,822,740
4,287,630
14,150
2,910
Aug 16, 2018 / 13:56
10,909,130
3,201,780
16,390
3,340
Aug 16, 2018 / 16:09
9,178,910
2,043,210
20,240
3,560
Aug 17, 2018 / 07:15
8,567,910
1,088,010
2,490
710
Aug 17, 2018 / 12:20
8,931,940
1,920,450
9,000
1,690
Aug 17, 2018 / 14:34
8,170,320
1,550,220
6,660
1,270
Aug 17, 2018 / 21:23
7,922,450
1,547,230
15,000
3,160
Aug 18, 2018 / 05:58
11,405,560
4,526,350
6,900
770
Aug 18, 2018 / 10:23
11,551,520
4,765,840
6,460
660
Aug 18, 2018 / 12:00
11,056,610
3,748,350
8,270
1,170
Aug 18, 2018 / 15:23
9,661,470
2,383,730
7,550
1,370
Aug 18, 2018 / 17:29
7,329,040
1,070,070
5,650
850
Aug 18, 2018 / 20:05
7,951,420
1,276,580
6,920
1,170
Aug 19, 2018 / 08:49
8,076,470
1,305,330
7,080
840
Aug 19, 2018 / 10:45
8,426,640
1,476,230
8,620
1,310
Aug 19, 2018 / 13:36
8,151,180
1,422,120
7,620
1,150
Aug 19, 2018 / 15:49
8,079,010
1,388,040
8,610
1,670
Aug 19, 2018 / 18:48
7,866,980
1,365,380
10,050
2,050
Aug 19, 2018 / 20:34
7,718,330
1,298,740
9,200
1,960
Aug 20, 2018 / 07:33
7,491,140
1,155,140
3,850
210
Aug 20, 2018 / 08:40
7,126,380
1,047,090
5,930
960
Aug 20, 2018 / 11:53
6,273,550
775,810
4,870
730
Aug 20, 2018 / 13:51
5,976,180
692,050
3,740
550
Aug 20, 2018 / 15:05
5,994,030
683,700
3,990
670
Aug 20, 2018 / 15:58
5,843,260
643,500
4,030
680
Aug 20, 2018 / 17:03
6,128,080
708,860
4,820
890
Aug 20, 2018 / 19:54
5,843,260
643,500
4,030
680
Aug 21, 2018 / 08:17
5,839,880
680,770
7,570
1,300
Aug 21, 2018 / 13:32
4,016,390
381,690
2,370
340
Aug 22, 2018 / 08:15
7,921,970
1,038,120
12,500
3,260
Aug 22, 2018 / 11:47
7,122,970
802,530
3,540
890
Aug 22, 2018 / 18:51
5,653,640
523,820
8,280
1,860
Aug 23, 2018 / 07:44
10,565,490
3,559,100
14,050
2,120
Aug 23, 2018 / 09:22
10,158,540
3,124,190
16,530
2,840
Aug 23, 2018 / 14:53 
9,703,540
2,552,250
12,320
2,160
Aug 23, 2018 / 17:19
10,027,360
2,603,010
14,040
2,930
Aug 24, 2018 / 07:54
9,889,080
3,610,500
5,600
510
Aug 24, 2018 / 16:11
6,812,280
695,970
940
160
Aug 25, 2018 / 07:49
6,436,960
950,530
2,800
340
Aug 25, 2018 / 13:56
8,614,690
1,847,220
3,040
410
Aug 26,2018 / 09:06
9,054,210
1,931,080
3,250
240
Aug 28, 2018 / 09:36
1,325,970
114,030
5,620
900
Sep 1, 2018 / 09:04
5,819,650
450,120
1,130
120
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  • About Us
  • Residential Services
    • Residential IAQ >
      • Mould Testing and Remediation Strategy
      • Asbestos Survey and Monitoring
      • Particulate Monitoring
      • Monitoring for Volatile Organic Compounds
      • Environmental Home Inspections
      • Thermal Imaging
      • Monitoring for EMF
      • Environmental Assessments for Marijuana Grow Operations
    • Building Energy Assessments
  • Industrial Services
    • Occupational Health and Safety Assessments
    • GHG Quantification
    • Environmental Assessments
    • Environmental Analytics and Policy Consulting
    • Project EIAs
  • Your Health
    • Ambient Air Particle Counts
    • Healthy Living
    • Healthy Working
    • Healthy Learning
  • Contact Us
  • Blog