ID: 620

AQSQID: 370670022

Site Name: Hattieaven

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

Updated: May 12, 2021, 4:45 a.m.

Location: Winston Salem (E Winston), NC

Reporting: True, Located: True

Current AQI: 54.0

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
May 12, 2021, 3 a.m. 8.8 ppb (9) 0.1 ppb (1) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 20.3 μg/m3 (19) 13.4 μg/m3 (54) 54.0
 
May 12, 2021, 2 a.m. 8.7 ppb (9) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A 17.1 μg/m3 (16) 11.5 μg/m3 (48) 48.0
 
May 12, 2021, 1 a.m. 9.5 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 13.6 μg/m3 (13) 8.5 μg/m3 (36) 36.0
 
May 12, 2021, midnight 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 14.3 μg/m3 (14) 7.6 μg/m3 (32) 41.0
 
May 11, 2021, 11 p.m. 2.9 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 15.5 μg/m3 (15) 7.5 μg/m3 (32) 46.0
 
May 11, 2021, 10 p.m. 3.0 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 14.4 μg/m3 (14) 6.8 μg/m3 (29) 50.0
 
May 11, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 53.0 ppb (50) N/A 14.1 μg/m3 (14) 6.5 μg/m3 (28) 50.0
 
May 11, 2021, 8 p.m. 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 53.0 ppb (50) N/A 14.1 μg/m3 (14) 6.4 μg/m3 (27) 50.0
 
May 11, 2021, 7 p.m. 2.0 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 11.9 μg/m3 (12) 6.0 μg/m3 (25) 47.0
 
May 11, 2021, 6 p.m. 2.0 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 12.1 μg/m3 (12) 5.9 μg/m3 (25) 44.0
 
May 11, 2021, 5 p.m. 2.0 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 11.3 μg/m3 (11) 5.6 μg/m3 (24) 43.0
 
May 11, 2021, 4 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 12.0 μg/m3 (12) 5.4 μg/m3 (23) 41.0
 
May 11, 2021, 3 p.m. 1.9 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 12.0 μg/m3 (12) 5.5 μg/m3 (23) 39.0
 
May 11, 2021, 2 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 9.5 μg/m3 (9) 4.9 μg/m3 (21) 38.0
 
May 11, 2021, 1 p.m. 2.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 9.1 μg/m3 (9) 4.6 μg/m3 (20) 37.0
 
May 11, 2021, noon 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.5 μg/m3 (11) 5.8 μg/m3 (25) 29.0
 
May 11, 2021, 11 a.m. 2.9 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 9.1 μg/m3 (9) 4.9 μg/m3 (21) 25.0
 
May 11, 2021, 10 a.m. 2.6 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 8.7 μg/m3 (9) 4.1 μg/m3 (18) 25.0
 
May 11, 2021, 9 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 7.5 μg/m3 (7) 3.9 μg/m3 (17) 29.0
 
May 11, 2021, 8 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 8.3 μg/m3 (8) 4.0 μg/m3 (17) 33.0
 
May 11, 2021, 7 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 9.9 μg/m3 (10) 5.2 μg/m3 (22) 34.0
 
May 11, 2021, 6 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 7.1 μg/m3 (7) 3.5 μg/m3 (15) 37.0
 
May 11, 2021, 5 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 8.6 μg/m3 (8) 3.6 μg/m3 (16) 38.0
 
May 11, 2021, 4 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 8.5 μg/m3 (8) 3.4 μg/m3 (15) 36.0
 
May 11, 2021, 3 a.m. 1.2 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 11.2 μg/m3 (11) 3.6 μg/m3 (16) 31.0
 
May 11, 2021, 2 a.m. 1.3 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A 11.4 μg/m3 (11) 4.3 μg/m3 (18) 30.0
 
May 11, 2021, 1 a.m. 4.1 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 13.3 μg/m3 (13) 6.1 μg/m3 (26) 26.0
 
May 11, 2021, midnight 3.7 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 15.2 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
May 10, 2021, 11 p.m. 4.1 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 15.7 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
May 10, 2021, 10 p.m. 4.0 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 34.0 ppb (32) N/A 14.7 μg/m3 (14) 6.1 μg/m3 (26) 32.0
 
May 10, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 16.1 μg/m3 (15) 5.7 μg/m3 (24) 31.0
 
May 10, 2021, 8 p.m. 3.2 ppb (4) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 18.2 μg/m3 (17) 5.9 μg/m3 (25) 32.0
 
May 10, 2021, 7 p.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 19.0 μg/m3 (18) 4.7 μg/m3 (20) 38.0
 
May 10, 2021, 6 p.m. 2.2 ppb (3) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 51.0 ppb (48) N/A N/A N/A 48.0
 
May 10, 2021, 5 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A N/A 47.0
 
May 10, 2021, 4 p.m. 2.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A N/A 45.0
 
May 10, 2021, 3 p.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A N/A 38.0
 
May 10, 2021, 2 p.m. 4.5 ppb (5) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 12.5 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
May 10, 2021, 1 p.m. 7.0 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 14.8 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
May 10, 2021, noon 6.6 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 13.5 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
May 10, 2021, 11 a.m. 4.9 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 13.8 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
May 10, 2021, 10 a.m. 3.7 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 15.5 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
May 10, 2021, 9 a.m. 3.6 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 15.5 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 10, 2021, 8 a.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 15.3 μg/m3 (15) 8.6 μg/m3 (36) 38.0
 
May 10, 2021, 7 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 14.7 μg/m3 (14) 8.6 μg/m3 (36) 40.0
 
May 10, 2021, 6 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 16.3 μg/m3 (16) 9.0 μg/m3 (38) 41.0
 
May 10, 2021, 5 a.m. 2.5 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 17.3 μg/m3 (17) 9.9 μg/m3 (42) 42.0
 
May 10, 2021, 3 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 18.6 μg/m3 (18) 9.6 μg/m3 (40) 41.0
 
May 10, 2021, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) N/A 18.2 μg/m3 (17) 9.5 μg/m3 (40) 44.0
 
May 10, 2021, 1 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 18.0 μg/m3 (17) 8.9 μg/m3 (38) 45.0
 
May 10, 2021, midnight 2.6 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 18.6 μg/m3 (18) 8.7 μg/m3 (37) 49.0
 
May 9, 2021, 11 p.m. 2.6 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 19.7 μg/m3 (19) 8.8 μg/m3 (37) 49.0
 
May 9, 2021, 10 p.m. 2.6 ppb (3) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 17.8 μg/m3 (17) 9.4 μg/m3 (40) 49.0
 
May 9, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 54.0 ppb (50) N/A 18.3 μg/m3 (17) 9.6 μg/m3 (40) 50.0
 
May 9, 2021, 8 p.m. 1.9 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) N/A 19.9 μg/m3 (19) 9.8 μg/m3 (41) 51.0
 
May 9, 2021, 7 p.m. 1.7 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 21.2 μg/m3 (20) 9.7 μg/m3 (41) 50.0
 
May 9, 2021, 6 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 19.6 μg/m3 (19) 9.0 μg/m3 (38) 55.0
 
May 9, 2021, 5 p.m. 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 15.2 μg/m3 (15) 7.1 μg/m3 (30) 47.0
 
May 9, 2021, 4 p.m. 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 45.0 ppb (42) N/A 13.3 μg/m3 (13) 6.3 μg/m3 (27) 42.0
 
May 9, 2021, 3 p.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 13.5 μg/m3 (13) 5.3 μg/m3 (23) 39.0
 
May 9, 2021, 2 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 10.0 μg/m3 (10) 4.5 μg/m3 (19) 38.0
 
May 9, 2021, 1 p.m. 1.9 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.3 μg/m3 (11) 4.8 μg/m3 (20) 34.0
 
May 9, 2021, noon 1.4 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 8.9 μg/m3 (9) 4.5 μg/m3 (19) 30.0
 
May 9, 2021, 11 a.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 8.2 μg/m3 (8) 4.1 μg/m3 (18) 25.0
 
May 9, 2021, 10 a.m. 1.5 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 7.5 μg/m3 (7) 3.8 μg/m3 (16) 25.0
 
May 9, 2021, 9 a.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 6.9 μg/m3 (7) 3.5 μg/m3 (15) 29.0
 
May 9, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 6.0 μg/m3 (6) 3.3 μg/m3 (14) 32.0
 
May 9, 2021, 7 a.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 7.1 μg/m3 (7) 3.3 μg/m3 (14) 33.0
 
May 9, 2021, 6 a.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 7.0 μg/m3 (7) 3.5 μg/m3 (15) 33.0
 
May 9, 2021, 5 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 7.4 μg/m3 (7) 3.9 μg/m3 (17) 33.0
 
May 9, 2021, 4 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 8.3 μg/m3 (8) 4.2 μg/m3 (18) 34.0
 
May 9, 2021, 3 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 8.8 μg/m3 (9) 4.0 μg/m3 (17) 38.0
 
May 9, 2021, 2 a.m. 7.7 ppb (8) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A 14.0 μg/m3 (13) 5.6 μg/m3 (24) 35.0
 
May 9, 2021, 1 a.m. 7.6 ppb (8) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 13.9 μg/m3 (13) 5.7 μg/m3 (24) 36.0
 
May 9, 2021, midnight 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 10.3 μg/m3 (10) 4.1 μg/m3 (18) 43.0
 
May 8, 2021, 11 p.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 12.0 μg/m3 (12) 3.7 μg/m3 (16) 46.0
 
May 8, 2021, 10 p.m. 1.4 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 10.6 μg/m3 (10) 3.7 μg/m3 (16) 47.0
 
May 8, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 51.0 ppb (48) N/A 12.6 μg/m3 (12) 3.9 μg/m3 (17) 48.0
 
May 8, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 11.6 μg/m3 (11) 4.1 μg/m3 (18) 49.0
 
May 8, 2021, 7 p.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 14.4 μg/m3 (14) 4.3 μg/m3 (18) 49.0
 
May 8, 2021, 6 p.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 15.7 μg/m3 (15) 4.7 μg/m3 (20) 49.0
 
May 8, 2021, 5 p.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 17.3 μg/m3 (17) 5.3 μg/m3 (23) 48.0
 
May 8, 2021, 4 p.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 18.5 μg/m3 (18) 6.7 μg/m3 (28) 46.0
 
May 8, 2021, 3 p.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 20.0 μg/m3 (19) 6.9 μg/m3 (29) 44.0
 
May 8, 2021, 2 p.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 15.8 μg/m3 (15) 6.3 μg/m3 (27) 41.0
 
May 8, 2021, 1 p.m. 2.2 ppb (3) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 13.7 μg/m3 (13) 5.9 μg/m3 (25) 36.0
 
May 8, 2021, noon 3.6 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 13.5 μg/m3 (13) 6.0 μg/m3 (25) 28.0
 
May 8, 2021, 11 a.m. 5.9 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 12.6 μg/m3 (12) 6.4 μg/m3 (27) 27.0
 
May 8, 2021, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 13.6 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
May 8, 2021, 9 a.m. 4.6 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 12.2 μg/m3 (12) 6.1 μg/m3 (26) 28.0
 
May 8, 2021, 8 a.m. 4.6 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 15.7 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
May 8, 2021, 7 a.m. 5.6 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 15.0 μg/m3 (14) 7.9 μg/m3 (33) 33.0
 
May 8, 2021, 6 a.m. 13.2 ppb (13) 0.4 ppb (1) N/A 12.0 ppb (12) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 14.5 μg/m3 (14) 7.8 μg/m3 (33) 33.0
 
May 8, 2021, 5 a.m. 16.6 ppb (16) 0.1 ppb (1) N/A 16.0 ppb (16) N/A 1.0 ppb (2) 12.0 ppb (12) N/A 14.3 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
May 8, 2021, 4 a.m. 16.3 ppb (16) 0.1 ppb (1) N/A 16.0 ppb (16) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 14.7 μg/m3 (14) 7.7 μg/m3 (33) 33.0
 
May 8, 2021, 3 a.m. 9.9 ppb (10) 0.0 ppb (0) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 13.4 μg/m3 (13) 5.9 μg/m3 (25) 31.0
 
May 8, 2021, 2 a.m. 7.9 ppb (8) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) N/A 15.4 μg/m3 (15) 8.4 μg/m3 (36) 36.0
 
May 8, 2021, 1 a.m. 6.2 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 23.9 μg/m3 (23) 13.8 μg/m3 (55) 55.0
 
May 8, 2021, midnight 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 22.7 μg/m3 (22) 12.9 μg/m3 (53) 53.0
 
May 7, 2021, 11 p.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 20.0 μg/m3 (19) 10.5 μg/m3 (44) 44.0
 
May 7, 2021, 10 p.m. 1.6 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 20.6 μg/m3 (20) 9.6 μg/m3 (40) 44.0
 
May 7, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 47.0 ppb (44) N/A 16.2 μg/m3 (15) 4.7 μg/m3 (20) 44.0
 
May 7, 2021, 8 p.m. 2.4 ppb (3) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 20.5 μg/m3 (19) 4.5 μg/m3 (19) 44.0
 
May 7, 2021, 7 p.m. 1.9 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 10.4 μg/m3 (10) 3.2 μg/m3 (14) 44.0
 
May 7, 2021, 6 p.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 10.5 μg/m3 (10) 3.5 μg/m3 (15) 43.0
 
May 7, 2021, 5 p.m. 1.8 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 12.0 μg/m3 (12) 3.2 μg/m3 (14) 40.0
 
May 7, 2021, 4 p.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 10.0 μg/m3 (10) 3.1 μg/m3 (13) 35.0
 
May 7, 2021, 3 p.m. 4.3 ppb (5) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 10.4 μg/m3 (10) 4.2 μg/m3 (18) 28.0
 
May 7, 2021, 2 p.m. 8.2 ppb (8) 1.4 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 14.7 μg/m3 (14) 6.1 μg/m3 (26) 26.0
 
May 7, 2021, 1 p.m. 6.7 ppb (7) 1.1 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 12.9 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
May 7, 2021, noon 9.5 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 14.5 μg/m3 (14) 7.5 μg/m3 (32) 32.0
 
May 7, 2021, 11 a.m. 7.4 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 12.6 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
May 7, 2021, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 10.7 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
May 7, 2021, 9 a.m. 6.4 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 13.0 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
May 7, 2021, 8 a.m. 7.6 ppb (8) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 13.4 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
May 7, 2021, 7 a.m. 3.6 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 12.5 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
May 7, 2021, 6 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 12.0 μg/m3 (12) 6.6 μg/m3 (28) 31.0
 
May 7, 2021, 5 a.m. 3.6 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 12.1 μg/m3 (12) 6.9 μg/m3 (29) 34.0
 
May 7, 2021, 4 a.m. 6.9 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 15.4 μg/m3 (15) 8.7 μg/m3 (37) 37.0
 
May 7, 2021, 3 a.m. 10.3 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 14.7 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
May 7, 2021, 2 a.m. 10.2 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) N/A 14.5 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
May 7, 2021, 1 a.m. 8.1 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 11.6 μg/m3 (11) 5.5 μg/m3 (23) 33.0
 
May 7, 2021, midnight 8.5 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 10.9 μg/m3 (11) 4.7 μg/m3 (20) 36.0
 
May 6, 2021, 11 p.m. 2.8 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 9.2 μg/m3 (9) 4.0 μg/m3 (17) 46.0
 
May 6, 2021, 10 p.m. -2.2 ppb (0) -3.6 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 53.0 ppb (50) N/A 9.7 μg/m3 (9) 3.9 μg/m3 (17) 50.0
 
May 6, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A 9.3 μg/m3 (9) 3.8 μg/m3 (16) 49.0
 
May 6, 2021, 8 p.m. 1.9 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 53.0 ppb (50) N/A 9.9 μg/m3 (10) 4.2 μg/m3 (18) 50.0
 
May 6, 2021, 7 p.m. 2.6 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 11.9 μg/m3 (12) 5.1 μg/m3 (22) 55.0
 
May 6, 2021, 6 p.m. 2.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 11.8 μg/m3 (11) 5.2 μg/m3 (22) 50.0
 
May 6, 2021, 5 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 10.2 μg/m3 (10) 4.8 μg/m3 (20) 47.0
 
May 6, 2021, 4 p.m. 1.3 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 10.9 μg/m3 (11) 4.2 μg/m3 (18) 43.0
 
May 6, 2021, 3 p.m. 1.0 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A 9.1 μg/m3 (9) 4.0 μg/m3 (17) 40.0
 
May 6, 2021, 2 p.m. 0.6 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A 8.6 μg/m3 (8) 3.6 μg/m3 (16) 38.0
 
May 6, 2021, 1 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) N/A N/A 9.0 μg/m3 (9) 3.6 μg/m3 (16) 16.0
 
May 6, 2021, noon 2.6 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) N/A N/A 10.7 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
May 6, 2021, 11 a.m. 3.2 ppb (4) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 11.3 μg/m3 (11) 4.5 μg/m3 (19) 27.0
 
May 6, 2021, 10 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 12.6 μg/m3 (12) 5.5 μg/m3 (23) 23.0
 
May 6, 2021, 9 a.m. 3.7 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 17.9 μg/m3 (17) 6.2 μg/m3 (26) 26.0
 
May 6, 2021, 8 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 11.8 μg/m3 (11) 4.5 μg/m3 (19) 28.0
 
May 6, 2021, 7 a.m. 3.3 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 10.0 μg/m3 (10) 4.6 μg/m3 (20) 28.0
 
May 6, 2021, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 11.3 μg/m3 (11) 4.4 μg/m3 (19) 31.0
 
May 6, 2021, 5 a.m. 1.5 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 9.0 μg/m3 (9) 3.8 μg/m3 (16) 33.0
 
May 6, 2021, 4 a.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 8.0 μg/m3 (8) 2.9 μg/m3 (13) 28.0
 
May 6, 2021, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 7.1 μg/m3 (7) 2.3 μg/m3 (10) 29.0
 
May 6, 2021, 2 a.m. 3.3 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A 7.6 μg/m3 (8) 2.2 μg/m3 (10) 28.0
 
May 6, 2021, 1 a.m. 3.4 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 8.8 μg/m3 (9) 2.8 μg/m3 (12) 30.0
 
May 6, 2021, midnight 3.6 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 11.4 μg/m3 (11) 3.2 μg/m3 (14) 33.0
 
May 5, 2021, 11 p.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 19.0 μg/m3 (18) 2.8 μg/m3 (12) 36.0
 
May 5, 2021, 10 p.m. 1.8 ppb (2) -1.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 8.5 μg/m3 (8) 1.8 μg/m3 (8) 34.0
 
May 5, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A 13.4 μg/m3 (13) 2.4 μg/m3 (10) 36.0
 
May 5, 2021, 8 p.m. 2.7 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 9.8 μg/m3 (10) 3.4 μg/m3 (15) 41.0
 
May 5, 2021, 7 p.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 12.2 μg/m3 (12) 3.8 μg/m3 (16) 43.0
 
May 5, 2021, 6 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 45.0 ppb (42) N/A 12.8 μg/m3 (12) 4.1 μg/m3 (18) 42.0
 
May 5, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 45.0 ppb (42) N/A 12.3 μg/m3 (12) 4.0 μg/m3 (17) 42.0
 
May 5, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A 12.5 μg/m3 (12) 4.6 μg/m3 (20) 40.0
 
May 5, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A 12.7 μg/m3 (12) 5.2 μg/m3 (22) 38.0
 
May 5, 2021, 2 p.m. 2.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 11.4 μg/m3 (11) 4.3 μg/m3 (18) 35.0
 
May 5, 2021, 1 p.m. 3.9 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 13.4 μg/m3 (13) 4.9 μg/m3 (21) 26.0
 
May 5, 2021, noon 6.5 ppb (7) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 14.0 μg/m3 (13) 5.6 μg/m3 (24) 24.0
 
May 5, 2021, 11 a.m. 6.6 ppb (7) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 14.0 μg/m3 (13) 5.7 μg/m3 (24) 24.0
 
May 5, 2021, 10 a.m. 3.2 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 15.5 μg/m3 (15) 5.7 μg/m3 (24) 24.0
 
May 5, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 14.6 μg/m3 (14) 5.8 μg/m3 (25) 25.0
 
May 5, 2021, 8 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 14.8 μg/m3 (14) 5.7 μg/m3 (24) 24.0
 
May 5, 2021, 7 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 14.8 μg/m3 (14) 6.3 μg/m3 (27) 27.0
 
May 5, 2021, 6 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 13.6 μg/m3 (13) 5.5 μg/m3 (23) 23.0
 
May 5, 2021, 5 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 17.6 μg/m3 (17) 6.4 μg/m3 (27) 27.0
 
May 5, 2021, 4 a.m. 3.3 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 19.0 μg/m3 (18) 7.9 μg/m3 (33) 33.0
 
May 5, 2021, 3 a.m. 5.5 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 23.2 μg/m3 (22) 8.2 μg/m3 (35) 35.0