ID: 2146

AQSQID: 460930001

Site Name: Black Hawk

Added: April 21, 2020, 6:24 p.m.

Updated: Oct. 19, 2021, 11:03 a.m.

Location: Black Hawk (Angus Lane), SD

Reporting: True, Located: True

Current AQI: 6.0

Black Hawk (Angus Lane) SD, US: 44.155636, -103.315765

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 6.0 μg/m3 (6) N/A 6.0
 
Oct. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 5.0 μg/m3 (5) N/A 7.0
 
Oct. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 5.0 μg/m3 (5) N/A 7.0
 
Oct. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 8.0 μg/m3 (8) N/A 8.0
 
Oct. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 4.0 μg/m3 (4) N/A 6.0
 
Oct. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 1.0 μg/m3 (1) N/A 6.0
 
Oct. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 19.0 μg/m3 (18) N/A 18.0
 
Oct. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 13.0 μg/m3 (13) N/A 13.0
 
Oct. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 19.0 μg/m3 (18) N/A 18.0
 
Oct. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 24.0 μg/m3 (23) N/A 23.0
 
Oct. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 26.0 μg/m3 (25) N/A 25.0
 
Oct. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 16.0 μg/m3 (15) N/A 15.0
 
Oct. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 21.0 μg/m3 (20) N/A 20.0
 
Oct. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 20.0 μg/m3 (19) N/A 19.0
 
Oct. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 21.0 μg/m3 (20) N/A 20.0
 
Oct. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 26.0 μg/m3 (25) N/A 25.0
 
Oct. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 50.0 μg/m3 (47) N/A 47.0
 
Oct. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 69.0 μg/m3 (58) N/A 58.0
 
Oct. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 48.0 μg/m3 (45) N/A 45.0
 
Oct. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 27.0 μg/m3 (25) N/A 25.0
 
Oct. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 18.0 μg/m3 (17) N/A 17.0
 
Oct. 18, 2021, noon N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 6.0 μg/m3 (6) N/A 6.0
 
Oct. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 5.0 μg/m3 (5) N/A 5.0
 
Oct. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 1.0 μg/m3 (1) N/A 5.0
 
Oct. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 4.0 μg/m3 (4) N/A 6.0
 
Oct. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 5.0 μg/m3 (5) N/A 6.0
 
Oct. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 5.0 μg/m3 (5) N/A 7.0
 
Oct. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 7.0 μg/m3 (7) N/A 7.0
 
Oct. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 13.0 μg/m3 (13) N/A 13.0
 
Oct. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 4.0 μg/m3 (4) N/A 7.0
 
Oct. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 4.0 μg/m3 (4) N/A 8.0
 
Oct. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 3.0 μg/m3 (3) N/A 9.0
 
Oct. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 2.0 μg/m3 (2) N/A 8.0
 
Oct. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 1.0 μg/m3 (1) N/A 8.0
 
Oct. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 9.0
 
Oct. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 9.0 μg/m3 (9) N/A 10.0
 
Oct. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 4.0 μg/m3 (4) N/A 9.0
 
Oct. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 7.0 μg/m3 (7) N/A 8.0
 
Oct. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 14.0 μg/m3 (13) N/A 13.0
 
Oct. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 3.0 μg/m3 (3) N/A 7.0
 
Oct. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A -1.0 μg/m3 (0) N/A 7.0
 
Oct. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 2.0 μg/m3 (2) N/A 5.0
 
Oct. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 2.0 μg/m3 (2) N/A 5.0
 
Oct. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A -3.0 μg/m3 (0) N/A 5.0
 
Oct. 17, 2021, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 1.0 μg/m3 (1) N/A 6.0
 
Oct. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 5.0 μg/m3 (5) N/A 6.0
 
Oct. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 5.0 μg/m3 (5) N/A 6.0
 
Oct. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 5.0 μg/m3 (5) N/A 5.0
 
Oct. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 7.0 μg/m3 (7) N/A 7.0
 
Oct. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 3.0 μg/m3 (3) N/A 4.0
 
Oct. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 2.0 μg/m3 (2) N/A 4.0
 
Oct. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 5.0 μg/m3 (5) N/A 5.0
 
Oct. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 5.0 μg/m3 (5) N/A 6.0
 
Oct. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 5.0 μg/m3 (5) N/A 5.0
 
Oct. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 9.0 μg/m3 (9) N/A 9.0
 
Oct. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 10.0 μg/m3 (10) N/A 10.0
 
Oct. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 7.0 μg/m3 (7) N/A 7.0
 
Oct. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 5.0 μg/m3 (5) N/A 7.0
 
Oct. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 3.0 μg/m3 (3) N/A 8.0
 
Oct. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 4.0 μg/m3 (4) N/A 8.0
 
Oct. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 0.0 μg/m3 (0) N/A 8.0
 
Oct. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A -2.0 μg/m3 (0) N/A 8.0
 
Oct. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A -3.0 μg/m3 (0) N/A 8.0
 
Oct. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 5.0 μg/m3 (5) N/A 8.0
 
Oct. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 13.0 μg/m3 (13) N/A 13.0
 
Oct. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 16.0 μg/m3 (15) N/A 15.0
 
Oct. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 2.0 μg/m3 (2) N/A 6.0
 
Oct. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 3.0 μg/m3 (3) N/A 5.0
 
Oct. 16, 2021, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 2.0 μg/m3 (2) N/A 6.0
 
Oct. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A -1.0 μg/m3 (0) N/A 7.0
 
Oct. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A -1.0 μg/m3 (0) N/A 8.0
 
Oct. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 1.0 μg/m3 (1) N/A 8.0
 
Oct. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 2.0 μg/m3 (2) N/A 8.0
 
Oct. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 8.0
 
Oct. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A -1.0 μg/m3 (0) N/A 8.0
 
Oct. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 3.0 μg/m3 (3) N/A 8.0
 
Oct. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A -2.0 μg/m3 (0) N/A 7.0
 
Oct. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A -1.0 μg/m3 (0) N/A 7.0
 
Oct. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) N/A 1.0
 
Oct. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 0.0 μg/m3 (0) N/A 8.0
 
Oct. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 1.0 μg/m3 (1) N/A 8.0
 
Oct. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 1.0 μg/m3 (1) N/A 8.0
 
Oct. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 0.0 μg/m3 (0) N/A 8.0
 
Oct. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 2.0 μg/m3 (2) N/A 8.0
 
Oct. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 5.0 μg/m3 (5) N/A 8.0
 
Oct. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 0.0 μg/m3 (0) N/A 8.0
 
Oct. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 2.0 μg/m3 (2) N/A 7.0
 
Oct. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 3.0 μg/m3 (3) N/A 7.0
 
Oct. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 2.0 μg/m3 (2) N/A 7.0
 
Oct. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 0.0 μg/m3 (0) N/A 6.0
 
Oct. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 0.0 μg/m3 (0) N/A 6.0
 
Oct. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 3.0 μg/m3 (3) N/A 6.0
 
Oct. 15, 2021, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 7.0 μg/m3 (7) N/A 7.0
 
Oct. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 2.0 μg/m3 (2) N/A 7.0
 
Oct. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) N/A 7.0
 
Oct. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) N/A 7.0
 
Oct. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 2.0 μg/m3 (2) N/A 7.0
 
Oct. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 1.0 μg/m3 (1) N/A 7.0
 
Oct. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 2.0 μg/m3 (2) N/A 6.0
 
Oct. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 5.0 μg/m3 (5) N/A 7.0
 
Oct. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 2.0 μg/m3 (2) N/A 7.0
 
Oct. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) N/A 7.0
 
Oct. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 5.0 μg/m3 (5) N/A 7.0
 
Oct. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 7.0 μg/m3 (7) N/A 7.0
 
Oct. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 1.0 μg/m3 (1) N/A 5.0
 
Oct. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 4.0 μg/m3 (4) N/A 7.0
 
Oct. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 4.0 μg/m3 (4) N/A 7.0
 
Oct. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 7.0
 
Oct. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 7.0
 
Oct. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 1.0 μg/m3 (1) N/A 6.0
 
Oct. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 0.0 μg/m3 (0) N/A 6.0
 
Oct. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 1.0 μg/m3 (1) N/A 6.0
 
Oct. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 0.0 μg/m3 (0) N/A 6.0
 
Oct. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 2.0 μg/m3 (2) N/A 6.0
 
Oct. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 3.0 μg/m3 (3) N/A 6.0
 
Oct. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 0.0 μg/m3 (0) N/A 6.0
 
Oct. 14, 2021, noon N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 1.0 μg/m3 (1) N/A 7.0
 
Oct. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A -1.0 μg/m3 (0) N/A 7.0
 
Oct. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A -2.0 μg/m3 (0) N/A 7.0
 
Oct. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) N/A 7.0
 
Oct. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 3.0 μg/m3 (3) N/A 6.0
 
Oct. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 1.0 μg/m3 (1) N/A 6.0
 
Oct. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A -1.0 μg/m3 (0) N/A 6.0
 
Oct. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A -2.0 μg/m3 (0) N/A 7.0
 
Oct. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) N/A 7.0
 
Oct. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 0.0 μg/m3 (0) N/A 8.0
 
Oct. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A -1.0 μg/m3 (0) N/A 8.0
 
Oct. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 1.0 μg/m3 (1) N/A 7.0
 
Oct. 14, 2021, midnight N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) N/A 7.0
 
Oct. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) N/A 7.0
 
Oct. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 0.0 μg/m3 (0) N/A 6.0
 
Oct. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 0.0 μg/m3 (0) N/A 6.0
 
Oct. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 2.0 μg/m3 (2) N/A 5.0
 
Oct. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 3.0 μg/m3 (3) N/A 5.0
 
Oct. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 0.0 μg/m3 (0) N/A 5.0
 
Oct. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 0.0 μg/m3 (0) N/A 4.0
 
Oct. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 3.0 μg/m3 (3) N/A 4.0
 
Oct. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 1.0 μg/m3 (1) N/A 4.0
 
Oct. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 0.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A -1.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A -2.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A -2.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A -1.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 1.0 μg/m3 (1) N/A 3.0
 
Oct. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 0.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A -1.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A -2.0 μg/m3 (0) N/A 3.0
 
Oct. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A -2.0 μg/m3 (0) N/A 4.0
 
Oct. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A -1.0 μg/m3 (0) N/A 4.0
 
Oct. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A -1.0 μg/m3 (0) N/A 4.0
 
Oct. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A -2.0 μg/m3 (0) N/A 4.0
 
Oct. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A -3.0 μg/m3 (0) N/A 4.0
 
Oct. 13, 2021, midnight N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A -1.0 μg/m3 (0) N/A 4.0
 
Oct. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 2.0 μg/m3 (2) N/A 5.0
 
Oct. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 2.0 μg/m3 (2) N/A 5.0
 
Oct. 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 0.0 μg/m3 (0) N/A 4.0
 
Oct. 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 0.0 μg/m3 (0) N/A 4.0
 
Oct. 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 3.0 μg/m3 (3) N/A 3.0
 
Oct. 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 6.0 μg/m3 (6) N/A 6.0
 
Oct. 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 6.0 μg/m3 (6) N/A 6.0
 
Oct. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 10.0 μg/m3 (10) N/A 10.0
 
Oct. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 10.0 μg/m3 (10) N/A 10.0
 
Oct. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 8.0 μg/m3 (8) N/A 8.0
 
Oct. 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 10.0 μg/m3 (10) N/A 10.0
 
Oct. 12, 2021, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 5.0 μg/m3 (5) N/A 5.0
 
Oct. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 5.0 μg/m3 (5) N/A 5.0
 
Oct. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 5.0 μg/m3 (5) N/A 5.0
 
Oct. 12, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) N/A 4.0