AQSQID: 461270001

Site Name: Uc1

Location: Elk Point (475th Ave), SD

Reporting: True, Located: True

Current AQI: 48.0

Elk Point (475th Ave) SD, US: 42.751518, -96.707208

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Nov. 28, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 25.0 μg/m3 (23) 5.8 μg/m3 (24) 24.0
 
Nov. 28, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Nov. 28, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 19.0 μg/m3 (17) 4.4 μg/m3 (18) 22.0
 
Nov. 28, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 19.0 μg/m3 (17) 3.6 μg/m3 (15) 22.0
 
Nov. 28, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 20.0 μg/m3 (18) 3.6 μg/m3 (15) 22.0
 
Nov. 28, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 20.0 μg/m3 (18) 4.8 μg/m3 (20) 22.0
 
Nov. 28, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 17.0 μg/m3 (15) 5.3 μg/m3 (22) 22.0
 
Nov. 28, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 4.0 μg/m3 (4) 3.1 μg/m3 (13) 22.0
 
Nov. 28, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 4.6 μg/m3 (19) 22.0
 
Nov. 28, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 9.0 μg/m3 (8) 4.3 μg/m3 (18) 22.0
 
Nov. 28, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 14.0 μg/m3 (13) 3.1 μg/m3 (13) 22.0
 
Nov. 28, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 23.0 μg/m3 (21) 2.3 μg/m3 (10) 22.0
 
Nov. 28, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 21.0 μg/m3 (19) 3.6 μg/m3 (15) 22.0
 
Nov. 28, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 18.0 μg/m3 (16) 5.8 μg/m3 (24) 24.0
 
Nov. 28, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 19.0 μg/m3 (17) 3.3 μg/m3 (14) 22.0
 
Nov. 28, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 20.0 μg/m3 (18) 4.3 μg/m3 (18) 22.0
 
Nov. 28, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 20.0 μg/m3 (18) 5.3 μg/m3 (22) 22.0
 
Nov. 28, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 20.0 μg/m3 (18) 3.3 μg/m3 (14) 22.0
 
Nov. 28, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 17.0 μg/m3 (15) 2.1 μg/m3 (9) 24.0
 
Nov. 28, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 18.0 μg/m3 (16) 4.6 μg/m3 (19) 25.0
 
Nov. 28, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 20.0 μg/m3 (18) 2.8 μg/m3 (12) 23.0
 
Nov. 28, 2019, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 18.0 μg/m3 (16) 3.3 μg/m3 (14) 24.0
 
Nov. 27, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 18.0 μg/m3 (16) 3.8 μg/m3 (16) 23.0
 
Nov. 27, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 18.0 μg/m3 (16) 2.4 μg/m3 (10) 22.0
 
Nov. 27, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 1.0 μg/m3 (1) 3.6 μg/m3 (15) 23.0
 
Nov. 27, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) 3.1 μg/m3 (13) 25.0
 
Nov. 27, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 25.0
 
Nov. 27, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 25.0
 
Nov. 27, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 5.0 μg/m3 (5) 0.2 μg/m3 (1) 22.0
 
Nov. 27, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 3.1 μg/m3 (13) 23.0
 
Nov. 27, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) 3.8 μg/m3 (16) 23.0
 
Nov. 27, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 12.0 μg/m3 (11) 4.1 μg/m3 (17) 22.0
 
Nov. 27, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 20.0 μg/m3 (18) 5.8 μg/m3 (24) 24.0
 
Nov. 27, 2019, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 19.0 μg/m3 (17) 5.3 μg/m3 (22) 22.0
 
Nov. 27, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 18.0 μg/m3 (16) 6.5 μg/m3 (27) 27.0
 
Nov. 27, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 18.0 μg/m3 (16) 3.6 μg/m3 (15) 21.0
 
Nov. 27, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 18.0 μg/m3 (16) 4.1 μg/m3 (17) 21.0
 
Nov. 27, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 19.0 μg/m3 (17) 3.3 μg/m3 (14) 21.0
 
Nov. 27, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 20.0 μg/m3 (18) 2.8 μg/m3 (12) 21.0
 
Nov. 27, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 20.0 μg/m3 (18) 3.3 μg/m3 (14) 21.0
 
Nov. 27, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 20.0 μg/m3 (18) 4.1 μg/m3 (17) 22.0
 
Nov. 27, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 4.0 μg/m3 (4) 1.1 μg/m3 (5) 22.0
 
Nov. 27, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 3.0 μg/m3 (3) 3.3 μg/m3 (14) 21.0
 
Nov. 27, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 4.0 μg/m3 (4) 5.1 μg/m3 (21) 21.0
 
Nov. 27, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 21.0
 
Nov. 27, 2019, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 20.0
 
Nov. 26, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 3.6 μg/m3 (15) 18.0
 
Nov. 26, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 19.0
 
Nov. 26, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 10.0 μg/m3 (9) 3.1 μg/m3 (13) 21.0
 
Nov. 26, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 8.0 μg/m3 (7) 0.6 μg/m3 (2) 23.0
 
Nov. 26, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 22.0
 
Nov. 26, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Nov. 26, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 11.0 μg/m3 (10) 3.3 μg/m3 (14) 14.0
 
Nov. 26, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 22.0 μg/m3 (20) 5.0 μg/m3 (21) 21.0
 
Nov. 26, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 27.0 μg/m3 (25) 4.6 μg/m3 (19) 25.0
 
Nov. 26, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 19.0 μg/m3 (17) 5.3 μg/m3 (22) 22.0
 
Nov. 26, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 21.0 μg/m3 (19) 4.6 μg/m3 (19) 19.0
 
Nov. 26, 2019, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 22.0 μg/m3 (20) 6.5 μg/m3 (27) 27.0
 
Nov. 26, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 5.0 μg/m3 (5) 9.6 μg/m3 (40) 40.0
 
Nov. 26, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 15.0
 
Nov. 26, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
Nov. 26, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 6.0 μg/m3 (5) 5.5 μg/m3 (23) 23.0
 
Nov. 26, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 9.0 μg/m3 (8) 8.1 μg/m3 (34) 34.0
 
Nov. 26, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 9.0 μg/m3 (8) 6.9 μg/m3 (29) 29.0
 
Nov. 26, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 9.0 μg/m3 (8) 7.6 μg/m3 (32) 32.0
 
Nov. 26, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 6.0 μg/m3 (5) 6.9 μg/m3 (29) 29.0
 
Nov. 26, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 24.0
 
Nov. 26, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) 4.3 μg/m3 (18) 18.0
 
Nov. 26, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 5.3 μg/m3 (22) 22.0
 
Nov. 26, 2019, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 12.0 μg/m3 (11) 5.3 μg/m3 (22) 22.0
 
Nov. 25, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 13.0 μg/m3 (12) 2.9 μg/m3 (12) 21.0
 
Nov. 25, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 22.0 μg/m3 (20) 2.6 μg/m3 (11) 25.0
 
Nov. 25, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 25.0 μg/m3 (23) 1.6 μg/m3 (7) 27.0
 
Nov. 25, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 20.0 μg/m3 (18) 0.9 μg/m3 (4) 28.0
 
Nov. 25, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 32.0 μg/m3 (29) 0.4 μg/m3 (2) 29.0
 
Nov. 25, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 11.0 μg/m3 (10) 0.0 μg/m3 (0) 27.0
 
Nov. 25, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) N/A 12.0
 
Nov. 25, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
Nov. 25, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) -0.3 μg/m3 (0) 23.0
 
Nov. 25, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 1.0 μg/m3 (1) -1.0 μg/m3 (0) 21.0
 
Nov. 25, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 1.0 μg/m3 (1) 2.4 μg/m3 (10) 20.0
 
Nov. 25, 2019, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 1.0 μg/m3 (1) 4.3 μg/m3 (18) 18.0
 
Nov. 25, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 0.0 μg/m3 (0) 1.1 μg/m3 (5) 20.0
 
Nov. 25, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 20.0
 
Nov. 25, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 13.0 μg/m3 (12) 0.6 μg/m3 (2) 18.0
 
Nov. 25, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 7.0 μg/m3 (6) 2.9 μg/m3 (12) 15.0
 
Nov. 25, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Nov. 25, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
Nov. 25, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 8.0 μg/m3 (7) 7.6 μg/m3 (32) 32.0
 
Nov. 25, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 16.0 μg/m3 (15) 8.4 μg/m3 (35) 35.0
 
Nov. 25, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 10.0 μg/m3 (9) 2.8 μg/m3 (12) 12.0
 
Nov. 25, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 7.0 μg/m3 (6) 2.8 μg/m3 (12) 12.0
 
Nov. 25, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 7.0 μg/m3 (6) 5.8 μg/m3 (24) 24.0
 
Nov. 25, 2019, midnight N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 15.0
 
Nov. 24, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 12.0 μg/m3 (11) 3.6 μg/m3 (15) 22.0
 
Nov. 24, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 4.0 μg/m3 (4) 0.9 μg/m3 (4) 21.0
 
Nov. 24, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 0.4 μg/m3 (2) 24.0
 
Nov. 24, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 26.0
 
Nov. 24, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 25.0
 
Nov. 24, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 3.0 μg/m3 (3) 3.4 μg/m3 (14) 24.0
 
Nov. 24, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 1.6 μg/m3 (7) 22.0
 
Nov. 24, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 1.0 μg/m3 (1) 2.1 μg/m3 (9) 18.0
 
Nov. 24, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 2.0 μg/m3 (2) 4.6 μg/m3 (19) 19.0
 
Nov. 24, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 2.0 μg/m3 (2) 4.3 μg/m3 (18) 18.0
 
Nov. 24, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A -2.0 μg/m3 (0) 3.6 μg/m3 (15) 15.0
 
Nov. 24, 2019, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 12.0
 
Nov. 24, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 12.0
 
Nov. 24, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 12.0
 
Nov. 24, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 4.0 μg/m3 (4) 2.6 μg/m3 (11) 12.0
 
Nov. 24, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 1.0 μg/m3 (1) 3.8 μg/m3 (16) 16.0
 
Nov. 24, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 5.0 μg/m3 (5) 5.3 μg/m3 (22) 22.0
 
Nov. 24, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 10.0 μg/m3 (9) 2.1 μg/m3 (9) 15.0
 
Nov. 24, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 5.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
Nov. 24, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 6.0 μg/m3 (5) 5.8 μg/m3 (24) 24.0
 
Nov. 24, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 8.0 μg/m3 (7) 4.6 μg/m3 (19) 19.0
 
Nov. 24, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
Nov. 24, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 18.0 μg/m3 (16) 3.1 μg/m3 (13) 16.0
 
Nov. 24, 2019, midnight N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 1.6 μg/m3 (7) 14.0
 
Nov. 23, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 2.9 μg/m3 (12) 19.0
 
Nov. 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 1.4 μg/m3 (6) 22.0
 
Nov. 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 1.2 μg/m3 (5) 23.0
 
Nov. 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.0 μg/m3 (7) 3.4 μg/m3 (14) 22.0
 
Nov. 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 22.0
 
Nov. 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 2.0 μg/m3 (2) 3.9 μg/m3 (16) 19.0
 
Nov. 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 1.0 μg/m3 (1) 4.6 μg/m3 (19) 19.0
 
Nov. 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 15.0
 
Nov. 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 8.0 μg/m3 (7) 0.2 μg/m3 (1) 15.0
 
Nov. 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 7.0 μg/m3 (6) 1.6 μg/m3 (7) 14.0
 
Nov. 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 3.0 μg/m3 (3) 3.1 μg/m3 (13) 13.0
 
Nov. 23, 2019, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 12.0
 
Nov. 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 8.0 μg/m3 (7) 2.4 μg/m3 (10) 15.0
 
Nov. 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 5.0 μg/m3 (5) 5.3 μg/m3 (22) 22.0
 
Nov. 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 6.0 μg/m3 (5) 6.7 μg/m3 (28) 28.0
 
Nov. 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 4.8 μg/m3 (20) 20.0
 
Nov. 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 12.0
 
Nov. 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 15.0
 
Nov. 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Nov. 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 7.0 μg/m3 (6) 6.0 μg/m3 (25) 25.0
 
Nov. 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 6.0 μg/m3 (5) 4.5 μg/m3 (19) 19.0
 
Nov. 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 11.0
 
Nov. 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 16.0
 
Nov. 23, 2019, midnight N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 8.0 μg/m3 (7) 7.4 μg/m3 (31) 31.0
 
Nov. 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 8.0 μg/m3 (7) 8.6 μg/m3 (36) 36.0
 
Nov. 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 7.0 μg/m3 (6) 3.4 μg/m3 (14) 21.0
 
Nov. 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 24.0
 
Nov. 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 23.0
 
Nov. 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 22.0
 
Nov. 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 4.0 μg/m3 (4) 5.3 μg/m3 (22) 22.0
 
Nov. 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 7.0 μg/m3 (6) 8.2 μg/m3 (34) 34.0
 
Nov. 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 8.0 μg/m3 (7) 6.3 μg/m3 (26) 26.0
 
Nov. 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 7.0 μg/m3 (6) 4.8 μg/m3 (20) 20.0
 
Nov. 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 11.0 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
Nov. 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 10.0 μg/m3 (9) 6.9 μg/m3 (29) 29.0
 
Nov. 22, 2019, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 9.0 μg/m3 (8) 6.5 μg/m3 (27) 27.0
 
Nov. 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
Nov. 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 3.0 μg/m3 (3) -0.5 μg/m3 (0) 7.0
 
Nov. 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 12.0
 
Nov. 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 7.0 μg/m3 (6) 5.8 μg/m3 (24) 24.0
 
Nov. 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Nov. 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
Nov. 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 11.0
 
Nov. 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 11.0
 
Nov. 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
Nov. 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 9.0 μg/m3 (8) 4.6 μg/m3 (19) 19.0
 
Nov. 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 6.5 μg/m3 (27) 27.0
 
Nov. 22, 2019, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 7.0 μg/m3 (6) 5.8 μg/m3 (24) 24.0
 
Nov. 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 3.1 μg/m3 (13) 18.0
 
Nov. 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 3.0 μg/m3 (3) 1.1 μg/m3 (5) 18.0