AQSQID: 370670022

Site Name: Hattieaven

Location: Winston Salem (E Winston), NC

Reporting: True, Located: True

Current AQI: 9.0

Winston Salem (E Winston) NC, US: 36.1106, -80.2267

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 25, 2020, 6 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 9.0
 
Jan. 25, 2020, 5 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 11.0
 
Jan. 25, 2020, 4 p.m. 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
Jan. 25, 2020, 3 p.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.9 μg/m3 (20) 20.0
 
Jan. 25, 2020, 2 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.9 μg/m3 (25) 25.0
 
Jan. 25, 2020, 1 p.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 6.9 μg/m3 (29) 29.0
 
Jan. 25, 2020, noon 3.3 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 31.0
 
Jan. 25, 2020, 11 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.2 μg/m3 (30) 30.0
 
Jan. 25, 2020, 10 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
Jan. 25, 2020, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.9 μg/m3 (29) 29.0
 
Jan. 25, 2020, 8 a.m. 3.7 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
Jan. 25, 2020, 7 a.m. 3.7 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.7 μg/m3 (20) 20.0
 
Jan. 25, 2020, 6 a.m. 3.7 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
Jan. 25, 2020, 5 a.m. 6.2 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 5.1 μg/m3 (21) 21.0
 
Jan. 25, 2020, 4 a.m. 9.2 ppb (9) 0.3 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 5.4 μg/m3 (23) 23.0
 
Jan. 25, 2020, 3 a.m. 9.7 ppb (9) 0.2 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 6.1 μg/m3 (25) 25.0
 
Jan. 25, 2020, 2 a.m. 7.3 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A 7.0 μg/m3 (6) 4.9 μg/m3 (20) 20.0
 
Jan. 25, 2020, 1 a.m. 8.0 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A 5.0 μg/m3 (5) 3.5 μg/m3 (15) 15.0
 
Jan. 25, 2020, midnight 9.7 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 12.0
 
Jan. 24, 2020, 11 p.m. 5.9 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Jan. 24, 2020, 10 p.m. 5.7 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 10.6 μg/m3 (44) 44.0
 
Jan. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 10.1 μg/m3 (42) 42.0
 
Jan. 24, 2020, 8 p.m. 5.6 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 19.0 μg/m3 (17) 14.2 μg/m3 (55) 55.0
 
Jan. 24, 2020, 7 p.m. 5.3 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 20.0 μg/m3 (18) 14.1 μg/m3 (54) 54.0
 
Jan. 24, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 18.0 μg/m3 (16) 13.4 μg/m3 (53) 53.0
 
Jan. 24, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 12.4 μg/m3 (51) 51.0
 
Jan. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 9.4 μg/m3 (39) 39.0
 
Jan. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 6.9 μg/m3 (29) 29.0
 
Jan. 24, 2020, 2 p.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) 4.2 μg/m3 (18) 18.0
 
Jan. 24, 2020, 1 p.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) 3.9 μg/m3 (16) 16.0
 
Jan. 24, 2020, noon 3.6 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A 7.0 μg/m3 (6) 5.1 μg/m3 (21) 21.0
 
Jan. 24, 2020, 11 a.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 6.6 μg/m3 (28) 28.0
 
Jan. 24, 2020, 10 a.m. 3.2 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 10.1 μg/m3 (42) 42.0
 
Jan. 24, 2020, 9 a.m. 4.6 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 12.4 μg/m3 (51) 51.0
 
Jan. 24, 2020, 8 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 21.0 μg/m3 (19) 14.4 μg/m3 (55) 55.0
 
Jan. 24, 2020, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 24.0 μg/m3 (22) 15.5 μg/m3 (57) 57.0
 
Jan. 24, 2020, 6 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 20.0 μg/m3 (18) 12.6 μg/m3 (51) 51.0
 
Jan. 24, 2020, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.9 μg/m3 (41) 41.0
 
Jan. 24, 2020, 4 a.m. 3.3 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 8.0 μg/m3 (33) 33.0
 
Jan. 24, 2020, 3 a.m. 4.6 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Jan. 24, 2020, 2 a.m. 6.1 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A 16.0 μg/m3 (15) 10.6 μg/m3 (44) 44.0
 
Jan. 24, 2020, 1 a.m. 7.1 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.3 μg/m3 (39) 39.0
 
Jan. 24, 2020, midnight 10.0 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
Jan. 23, 2020, 11 p.m. 11.1 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
Jan. 23, 2020, 10 p.m. 10.2 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.4 μg/m3 (35) 35.0
 
Jan. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.4 μg/m3 (35) 35.0
 
Jan. 23, 2020, 8 p.m. 5.2 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
Jan. 23, 2020, 7 p.m. 8.1 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.7 μg/m3 (36) 36.0
 
Jan. 23, 2020, 6 p.m. 6.7 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 23, 2020, 5 p.m. 7.2 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
Jan. 23, 2020, 4 p.m. 6.7 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
Jan. 23, 2020, 3 p.m. 7.0 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
Jan. 23, 2020, 2 p.m. 10.4 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A 18.0 μg/m3 (16) 10.8 μg/m3 (45) 45.0
 
Jan. 23, 2020, 1 p.m. 10.5 ppb (10) 1.2 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 10.3 μg/m3 (43) 43.0
 
Jan. 23, 2020, noon 10.4 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2020, 11 a.m. 7.2 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 10.7 μg/m3 (45) 45.0
 
Jan. 23, 2020, 10 a.m. 4.8 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 10.1 μg/m3 (42) 42.0
 
Jan. 23, 2020, 9 a.m. 5.5 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 10.3 μg/m3 (43) 43.0
 
Jan. 23, 2020, 8 a.m. 5.9 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 10.3 μg/m3 (43) 43.0
 
Jan. 23, 2020, 7 a.m. 4.9 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2020, 6 a.m. 6.1 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 11.8 μg/m3 (49) 49.0
 
Jan. 23, 2020, 5 a.m. 7.9 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 13.4 μg/m3 (53) 53.0
 
Jan. 23, 2020, 4 a.m. 7.2 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 13.3 μg/m3 (53) 53.0
 
Jan. 23, 2020, 3 a.m. 7.6 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Jan. 23, 2020, 2 a.m. 14.2 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A N/A 18.0 μg/m3 (16) 13.2 μg/m3 (53) 53.0
 
Jan. 23, 2020, 1 a.m. 19.3 ppb (18) 1.2 ppb (1) N/A 18.0 ppb (17) N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2020, midnight 19.3 ppb (18) 1.6 ppb (1) N/A 17.0 ppb (16) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.3 μg/m3 (35) 35.0
 
Jan. 22, 2020, 11 p.m. 18.5 ppb (17) 1.2 ppb (1) N/A 17.0 ppb (16) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 6.5 μg/m3 (27) 27.0
 
Jan. 22, 2020, 10 p.m. 5.8 ppb (5) -3.0 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
Jan. 22, 2020, 8 p.m. 8.0 ppb (7) 1.5 ppb (1) N/A 7.0 ppb (6) N/A 3.0 ppb (4) N/A N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
Jan. 22, 2020, 7 p.m. 7.2 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A 8.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
Jan. 22, 2020, 6 p.m. 4.4 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 5.1 μg/m3 (21) 21.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 5.6 μg/m3 (23) 23.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
Jan. 22, 2020, 2 p.m. 11.5 ppb (11) 3.7 ppb (3) N/A 8.0 ppb (7) N/A 2.0 ppb (3) N/A N/A 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
Jan. 22, 2020, 1 p.m. 6.4 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A 11.0 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Jan. 22, 2020, noon 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.9 μg/m3 (29) 29.0
 
Jan. 22, 2020, 11 a.m. 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.3 μg/m3 (30) 30.0
 
Jan. 22, 2020, 10 a.m. 5.7 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.8 μg/m3 (32) 32.0
 
Jan. 22, 2020, 9 a.m. 6.8 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
Jan. 22, 2020, 8 a.m. 6.3 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 19.0 μg/m3 (17) 13.7 μg/m3 (54) 54.0
 
Jan. 22, 2020, 7 a.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.8 μg/m3 (32) 32.0
 
Jan. 22, 2020, 6 a.m. 3.4 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 28.0
 
Jan. 22, 2020, 5 a.m. 6.3 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
Jan. 22, 2020, 4 a.m. 3.6 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.3 μg/m3 (30) 30.0
 
Jan. 22, 2020, 3 a.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Jan. 22, 2020, 2 a.m. 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A 12.0 μg/m3 (11) 8.9 μg/m3 (37) 37.0
 
Jan. 22, 2020, 1 a.m. 6.6 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.7 μg/m3 (36) 36.0
 
Jan. 22, 2020, midnight 8.8 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2020, 11 p.m. 10.4 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Jan. 21, 2020, 10 p.m. 5.2 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
Jan. 21, 2020, 8 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
Jan. 21, 2020, 7 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 6 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Jan. 21, 2020, 5 p.m. 2.6 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 4 p.m. 5.9 ppb (5) 2.8 ppb (3) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.5 μg/m3 (19) 19.0
 
Jan. 21, 2020, 3 p.m. 3.7 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Jan. 21, 2020, 2 p.m. 3.6 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 5.9 μg/m3 (25) 25.0
 
Jan. 21, 2020, 1 p.m. 11.2 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 6.8 μg/m3 (28) 28.0
 
Jan. 21, 2020, noon 19.3 ppb (18) 2.0 ppb (2) N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
Jan. 21, 2020, 11 a.m. 6.7 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 10 a.m. 2.9 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 6.5 μg/m3 (27) 27.0
 
Jan. 21, 2020, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.7 μg/m3 (24) 24.0
 
Jan. 21, 2020, 8 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.6 μg/m3 (23) 23.0
 
Jan. 21, 2020, 7 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 24.0
 
Jan. 21, 2020, 6 a.m. 3.5 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 7.6 μg/m3 (32) 32.0
 
Jan. 21, 2020, 5 a.m. 4.7 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
Jan. 21, 2020, 4 a.m. 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 6.6 μg/m3 (28) 28.0
 
Jan. 21, 2020, 3 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 24.0
 
Jan. 21, 2020, 2 a.m. 4.0 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A 9.0 μg/m3 (8) 6.1 μg/m3 (25) 25.0
 
Jan. 21, 2020, 1 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
Jan. 21, 2020, midnight 5.4 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
Jan. 20, 2020, 11 p.m. 9.1 ppb (8) 1.4 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
Jan. 20, 2020, 10 p.m. 5.1 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 17.0
 
Jan. 20, 2020, 8 p.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 3.9 μg/m3 (16) 16.0
 
Jan. 20, 2020, 7 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 17.0
 
Jan. 20, 2020, 6 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.3 μg/m3 (18) 18.0
 
Jan. 20, 2020, 5 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.6 μg/m3 (19) 19.0
 
Jan. 20, 2020, 4 p.m. 1.7 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 22.0
 
Jan. 20, 2020, 3 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.6 μg/m3 (23) 23.0
 
Jan. 20, 2020, 2 p.m. 2.5 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.7 μg/m3 (24) 24.0
 
Jan. 20, 2020, 1 p.m. 7.5 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 6.4 μg/m3 (27) 27.0
 
Jan. 20, 2020, noon 9.7 ppb (9) 0.4 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
Jan. 20, 2020, 11 a.m. 4.6 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 10 a.m. 5.7 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.7 μg/m3 (24) 24.0
 
Jan. 20, 2020, 9 a.m. 4.3 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.3 μg/m3 (22) 22.0
 
Jan. 20, 2020, 8 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.3 μg/m3 (22) 22.0
 
Jan. 20, 2020, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.6 μg/m3 (23) 23.0
 
Jan. 20, 2020, 6 a.m. 3.6 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.7 μg/m3 (24) 24.0
 
Jan. 20, 2020, 5 a.m. 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 5.6 μg/m3 (23) 23.0
 
Jan. 20, 2020, 4 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Jan. 20, 2020, 3 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
Jan. 20, 2020, 2 a.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 17.0
 
Jan. 20, 2020, 1 a.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 4.6 μg/m3 (19) 19.0
 
Jan. 20, 2020, midnight 2.7 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 20.0
 
Jan. 19, 2020, 11 p.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
Jan. 19, 2020, 10 p.m. 1.3 ppb (1) -0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 3.5 μg/m3 (15) 15.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Jan. 19, 2020, 8 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
Jan. 19, 2020, 7 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
Jan. 19, 2020, 6 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 3.0 μg/m3 (3) 1.7 μg/m3 (7) 7.0
 
Jan. 19, 2020, 5 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 5.0
 
Jan. 19, 2020, 4 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 4.0
 
Jan. 19, 2020, 3 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 5.0
 
Jan. 19, 2020, 2 p.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
Jan. 19, 2020, 1 p.m. 2.9 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 5.3 μg/m3 (22) 22.0
 
Jan. 19, 2020, noon 3.4 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 7.8 μg/m3 (32) 32.0
 
Jan. 19, 2020, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2020, 10 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 10.5 μg/m3 (44) 44.0
 
Jan. 19, 2020, 9 a.m. 3.3 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 10.9 μg/m3 (45) 45.0
 
Jan. 19, 2020, 8 a.m. 4.8 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 12.3 μg/m3 (51) 51.0
 
Jan. 19, 2020, 7 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 11.6 μg/m3 (48) 48.0
 
Jan. 19, 2020, 6 a.m. 4.5 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 12.4 μg/m3 (51) 51.0
 
Jan. 19, 2020, 5 a.m. 4.1 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 12.1 μg/m3 (50) 50.0
 
Jan. 19, 2020, 4 a.m. 3.7 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 11.6 μg/m3 (48) 48.0
 
Jan. 19, 2020, 3 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 9.5 μg/m3 (40) 40.0
 
Jan. 19, 2020, 2 a.m. 4.4 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A 11.0 μg/m3 (10) 9.5 μg/m3 (40) 40.0
 
Jan. 19, 2020, 1 a.m. 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 9.6 μg/m3 (40) 40.0
 
Jan. 19, 2020, midnight 6.1 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 10.2 μg/m3 (42) 42.0
 
Jan. 18, 2020, 11 p.m. 7.6 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 10.6 μg/m3 (44) 44.0
 
Jan. 18, 2020, 10 p.m. 7.1 ppb (7) -0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 9.5 μg/m3 (40) 40.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 8.8 μg/m3 (37) 37.0
 
Jan. 18, 2020, 8 p.m. 6.9 ppb (6) 0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 8.5 μg/m3 (35) 35.0
 
Jan. 18, 2020, 7 p.m. 5.1 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 7.4 μg/m3 (31) 31.0