AQSQID: 461030020

Site Name: Credit Union

Location: Rapid City, SD

Reporting: True, Located: True

Current AQI: 9.0

Rapid City SD, US: 44.087397, -103.273777

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 1.4 μg/m3 (6) 9.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.9 μg/m3 (8) 8.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 0.7 μg/m3 (3) 8.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 3.6 μg/m3 (15) 15.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 7.6 μg/m3 (32) 32.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 3.9 μg/m3 (16) 16.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 3.6 μg/m3 (15) 15.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (26) 18.1 μg/m3 (63) 63.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 5.4 μg/m3 (23) 23.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.4 μg/m3 (6) 8.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 0.7 μg/m3 (3) 13.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.4 μg/m3 (14) 14.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 5.3 μg/m3 (22) 22.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) -0.1 μg/m3 (0) 8.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 2.7 μg/m3 (11) 14.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (26) 5.8 μg/m3 (24) 26.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 6.8 μg/m3 (28) 28.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 55.0 μg/m3 (50) 7.5 μg/m3 (31) 50.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 45.0 μg/m3 (41) 5.6 μg/m3 (23) 41.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 98.0 μg/m3 (72) 13.6 μg/m3 (53) 72.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 3.9 μg/m3 (16) 28.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 5.1 μg/m3 (21) 24.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 4.9 μg/m3 (20) 20.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 3.9 μg/m3 (16) 16.0
 
Sept. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 1.2 μg/m3 (5) 6.0
 
Sept. 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.4 μg/m3 (14) 14.0
 
Sept. 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.6 μg/m3 (28) 28.0
 
Sept. 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.6 μg/m3 (28) 28.0
 
Sept. 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 7.3 μg/m3 (30) 30.0
 
Sept. 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 13.4 μg/m3 (53) 53.0
 
Sept. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 8.1 μg/m3 (34) 34.0
 
Sept. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 10.8 μg/m3 (45) 45.0
 
Sept. 14, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 2.2 μg/m3 (9) 9.0
 
Sept. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (19) 1.9 μg/m3 (8) 19.0
 
Sept. 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 12.0
 
Sept. 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 3.4 μg/m3 (14) 14.0
 
Sept. 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 8.0
 
Sept. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) -2.1 μg/m3 (0) 7.0
 
Sept. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) -2.6 μg/m3 (0) 6.0
 
Sept. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 0.2 μg/m3 (1) 5.0
 
Sept. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 3.4 μg/m3 (14) 17.0
 
Sept. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.7 μg/m3 (11) 11.0
 
Sept. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 1.2 μg/m3 (5) 15.0
 
Sept. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 3.4 μg/m3 (14) 15.0
 
Sept. 13, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (30) 5.1 μg/m3 (21) 30.0
 
Sept. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 3.4 μg/m3 (14) 24.0
 
Sept. 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
Sept. 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.9 μg/m3 (20) 20.0
 
Sept. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 2.4 μg/m3 (10) 12.0
 
Sept. 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.1 μg/m3 (17) 17.0
 
Sept. 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 4.1 μg/m3 (17) 17.0
 
Sept. 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 3.2 μg/m3 (13) 13.0
 
Sept. 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 5.3 μg/m3 (22) 22.0
 
Sept. 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 6.6 μg/m3 (28) 28.0
 
Sept. 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.2 μg/m3 (13) 13.0
 
Sept. 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 1.2 μg/m3 (5) 7.0
 
Sept. 13, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 1.7 μg/m3 (7) 7.0
 
Sept. 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 2.2 μg/m3 (9) 10.0
 
Sept. 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 1.0 μg/m3 (4) 15.0
 
Sept. 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 2.4 μg/m3 (10) 16.0
 
Sept. 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 2.9 μg/m3 (12) 38.0
 
Sept. 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 38.0 μg/m3 (35) 3.9 μg/m3 (16) 35.0
 
Sept. 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.0 μg/m3 (28) 1.5 μg/m3 (6) 28.0
 
Sept. 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 2.4 μg/m3 (10) 15.0
 
Sept. 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 2.4 μg/m3 (10) 15.0
 
Sept. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) -1.4 μg/m3 (0) 11.0
 
Sept. 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 4.4 μg/m3 (18) 18.0
 
Sept. 12, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 62.0 μg/m3 (54) 8.6 μg/m3 (36) 54.0
 
Sept. 12, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 2.9 μg/m3 (12) 12.0
 
Sept. 12, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 90.0 μg/m3 (68) 7.1 μg/m3 (30) 68.0
 
Sept. 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 59.0 μg/m3 (52) 4.6 μg/m3 (19) 52.0
 
Sept. 12, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
Sept. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 11.0
 
Sept. 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) 0.9 μg/m3 (4) 4.0
 
Sept. 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 4.6 μg/m3 (19) 19.0
 
Sept. 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
Sept. 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -1.6 μg/m3 (0) 4.0
 
Sept. 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -0.4 μg/m3 (0) 4.0
 
Sept. 12, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
Sept. 12, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 16.0
 
Sept. 12, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.9 μg/m3 (8) 8.0
 
Sept. 11, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 0.7 μg/m3 (3) 12.0
 
Sept. 11, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
Sept. 11, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.4 μg/m3 (6) 8.0
 
Sept. 11, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 2.2 μg/m3 (9) 10.0
 
Sept. 11, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 4.3 μg/m3 (18) 18.0
 
Sept. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 3.4 μg/m3 (14) 14.0
 
Sept. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 2.9 μg/m3 (12) 12.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
Sept. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Sept. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Sept. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 5.8 μg/m3 (24) 24.0
 
Sept. 11, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
Sept. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 3.6 μg/m3 (15) 18.0
 
Sept. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 5.1 μg/m3 (21) 21.0
 
Sept. 11, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 8.5 μg/m3 (35) 35.0
 
Sept. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 5.1 μg/m3 (21) 25.0
 
Sept. 11, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 7.3 μg/m3 (30) 30.0
 
Sept. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
Sept. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 5.8 μg/m3 (24) 24.0
 
Sept. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.9 μg/m3 (20) 20.0
 
Sept. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Sept. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 5.4 μg/m3 (23) 23.0
 
Sept. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
Sept. 11, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.6 μg/m3 (19) 19.0
 
Sept. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
Sept. 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.6 μg/m3 (19) 19.0
 
Sept. 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 3.9 μg/m3 (16) 16.0
 
Sept. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 17.0
 
Sept. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 0.7 μg/m3 (3) 10.0
 
Sept. 10, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.7 μg/m3 (7) 8.0
 
Sept. 10, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 3.1 μg/m3 (13) 13.0
 
Sept. 10, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 5.6 μg/m3 (23) 23.0
 
Sept. 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 2.9 μg/m3 (12) 13.0
 
Sept. 10, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 2.2 μg/m3 (9) 17.0
 
Sept. 10, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 1.9 μg/m3 (8) 12.0
 
Sept. 10, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.1 μg/m3 (17) 17.0
 
Sept. 10, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
Sept. 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.5 μg/m3 (6) 6.0
 
Sept. 10, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 16.0
 
Sept. 10, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 17.0
 
Sept. 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Sept. 10, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 5.4 μg/m3 (23) 23.0
 
Sept. 10, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 16.0
 
Sept. 10, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 6.8 μg/m3 (28) 28.0
 
Sept. 10, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.0 μg/m3 (37) 10.5 μg/m3 (44) 44.0
 
Sept. 10, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 10, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 113.0 μg/m3 (79) 11.3 μg/m3 (47) 79.0
 
Sept. 10, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.3 μg/m3 (43) 43.0
 
Sept. 9, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 151.0 μg/m3 (98) 12.2 μg/m3 (50) 98.0
 
Sept. 9, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 146.0 μg/m3 (96) 12.9 μg/m3 (52) 96.0
 
Sept. 9, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 128.0 μg/m3 (86) 13.1 μg/m3 (52) 86.0
 
Sept. 9, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 161.0 μg/m3 (103) 20.6 μg/m3 (68) 103.0
 
Sept. 9, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 143.0 μg/m3 (94) 16.6 μg/m3 (60) 94.0
 
Sept. 9, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.9 μg/m3 (58) 58.0
 
Sept. 9, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (17) 3.1 μg/m3 (13) 17.0
 
Sept. 9, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 3.9 μg/m3 (16) 16.0
 
Sept. 9, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 0.0 μg/m3 (0) 9.0
 
Sept. 9, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) -1.3 μg/m3 (0) 25.0
 
Sept. 9, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Sept. 9, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
Sept. 9, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 1.9 μg/m3 (8) 8.0
 
Sept. 9, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 1.4 μg/m3 (6) 6.0
 
Sept. 9, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) -0.6 μg/m3 (0) 1.0
 
Sept. 9, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 0.7 μg/m3 (3) 3.0
 
Sept. 9, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 0.7 μg/m3 (3) 3.0
 
Sept. 9, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 2.4 μg/m3 (10) 10.0
 
Sept. 9, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 3.9 μg/m3 (16) 16.0
 
Sept. 9, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 12.0
 
Sept. 9, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 4.1 μg/m3 (17) 17.0
 
Sept. 9, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
Sept. 9, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 3.4 μg/m3 (14) 14.0
 
Sept. 9, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 1.2 μg/m3 (5) 6.0
 
Sept. 8, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Sept. 8, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.7 μg/m3 (7) 7.0
 
Sept. 8, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 2.7 μg/m3 (11) 11.0
 
Sept. 8, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 8.0
 
Sept. 8, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 0.7 μg/m3 (3) 5.0
 
Sept. 8, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) -0.9 μg/m3 (0) 8.0
 
Sept. 8, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 2.2 μg/m3 (9) 15.0
 
Sept. 8, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 4.6 μg/m3 (19) 21.0
 
Sept. 8, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 62.0 μg/m3 (54) 3.2 μg/m3 (13) 54.0
 
Sept. 8, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 100.0 μg/m3 (72) 6.8 μg/m3 (28) 72.0
 
Sept. 8, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 92.0 μg/m3 (68) 8.8 μg/m3 (37) 68.0
 
Sept. 8, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 79.0 μg/m3 (62) 8.3 μg/m3 (35) 62.0
 
Sept. 8, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 91.0 μg/m3 (68) 9.1 μg/m3 (38) 68.0