ID: 620

AQSQID: 370670022

Site Name: Hattieaven

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

Updated: March 1, 2021, 6:33 p.m.

Location: Winston Salem (E Winston), NC

Reporting: True, Located: True

Current AQI: 22.0

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
March 1, 2021, 5 p.m. 4.8 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 7.4 μg/m3 (7) 3.2 μg/m3 (14) 22.0
 
March 1, 2021, 4 p.m. 4.6 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 6.4 μg/m3 (6) 2.6 μg/m3 (11) 25.0
 
March 1, 2021, 3 p.m. 7.0 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 7.1 μg/m3 (7) 2.9 μg/m3 (13) 23.0
 
March 1, 2021, 2 p.m. 9.4 ppb (9) 0.5 ppb (1) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 7.1 μg/m3 (7) 3.2 μg/m3 (14) 20.0
 
March 1, 2021, 1 p.m. 15.8 ppb (15) 1.3 ppb (2) N/A 14.0 ppb (14) N/A 1.0 ppb (2) 14.0 ppb (13) N/A 6.6 μg/m3 (7) 3.1 μg/m3 (13) 15.0
 
March 1, 2021, noon 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 6.3 μg/m3 (6) 2.6 μg/m3 (11) 25.0
 
March 1, 2021, 11 a.m. 2.3 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 6.0 μg/m3 (6) 2.6 μg/m3 (11) 26.0
 
March 1, 2021, 10 a.m. 1.4 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 16.2 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
March 1, 2021, 9 a.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 15.7 μg/m3 (15) 8.8 μg/m3 (37) 37.0
 
March 1, 2021, 8 a.m. 0.7 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 14.2 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
March 1, 2021, 7 a.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 13.4 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
March 1, 2021, 6 a.m. 1.5 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 13.8 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
March 1, 2021, 5 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 13.5 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
March 1, 2021, 4 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 11.8 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
March 1, 2021, 3 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 12.5 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
March 1, 2021, 2 a.m. 2.5 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) N/A 12.7 μg/m3 (12) 7.1 μg/m3 (30) 30.0
 
March 1, 2021, 1 a.m. 4.0 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 13.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
March 1, 2021, midnight 3.2 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
Feb. 28, 2021, 11 p.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 13.9 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
Feb. 28, 2021, 10 p.m. 1.2 ppb (2) -0.6 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 12.6 μg/m3 (12) 7.8 μg/m3 (33) 33.0
 
Feb. 28, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A 15.9 μg/m3 (15) 9.9 μg/m3 (42) 42.0
 
Feb. 28, 2021, 8 p.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 22.3 μg/m3 (21) 16.5 μg/m3 (61) 61.0
 
Feb. 28, 2021, 7 p.m. 3.5 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 25.9 μg/m3 (24) 19.6 μg/m3 (67) 67.0
 
Feb. 28, 2021, 6 p.m. 4.2 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 27.0 μg/m3 (25) 19.2 μg/m3 (66) 66.0
 
Feb. 28, 2021, 5 p.m. 5.7 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 30.9 μg/m3 (29) 21.1 μg/m3 (70) 70.0
 
Feb. 28, 2021, 4 p.m. 10.1 ppb (10) 3.7 ppb (4) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 12.0 ppb (12) N/A 36.4 μg/m3 (34) 23.7 μg/m3 (76) 76.0
 
Feb. 28, 2021, 3 p.m. 8.4 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 10.0 ppb (10) N/A 40.9 μg/m3 (38) 24.6 μg/m3 (78) 78.0
 
Feb. 28, 2021, 2 p.m. 5.3 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 11.0 ppb (11) N/A 30.1 μg/m3 (28) 19.0 μg/m3 (66) 66.0
 
Feb. 28, 2021, 1 p.m. 6.2 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 9.0 ppb (9) N/A 23.3 μg/m3 (22) 16.7 μg/m3 (61) 61.0
 
Feb. 28, 2021, noon 5.5 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 9.0 ppb (9) N/A 23.6 μg/m3 (22) 17.3 μg/m3 (62) 62.0
 
Feb. 28, 2021, 11 a.m. 6.1 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 6.0 ppb (6) N/A 22.2 μg/m3 (21) 16.1 μg/m3 (60) 60.0
 
Feb. 28, 2021, 10 a.m. 8.6 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 4.0 ppb (4) N/A 21.5 μg/m3 (20) 15.2 μg/m3 (58) 58.0
 
Feb. 28, 2021, 9 a.m. 7.8 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 4.0 ppb (4) N/A 22.8 μg/m3 (22) 15.1 μg/m3 (58) 58.0
 
Feb. 28, 2021, 8 a.m. 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 8.0 ppb (8) N/A 20.2 μg/m3 (19) 14.7 μg/m3 (57) 57.0
 
Feb. 28, 2021, 7 a.m. 5.9 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 10.0 ppb (10) N/A 25.7 μg/m3 (24) 18.2 μg/m3 (64) 64.0
 
Feb. 28, 2021, 6 a.m. 7.5 ppb (8) 0.2 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 10.0 ppb (10) N/A 23.2 μg/m3 (22) 17.1 μg/m3 (62) 62.0
 
Feb. 28, 2021, 5 a.m. 8.8 ppb (9) 0.4 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 10.0 ppb (10) N/A 25.1 μg/m3 (24) 18.2 μg/m3 (64) 64.0
 
Feb. 28, 2021, 4 a.m. 13.1 ppb (13) 2.3 ppb (3) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 8.0 ppb (8) N/A 24.0 μg/m3 (23) 16.6 μg/m3 (61) 61.0
 
Feb. 28, 2021, 3 a.m. 9.7 ppb (10) 0.4 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (13) N/A 21.7 μg/m3 (21) 15.3 μg/m3 (58) 58.0
 
Feb. 28, 2021, 2 a.m. 6.7 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) N/A 18.2 μg/m3 (17) 13.4 μg/m3 (54) 54.0
 
Feb. 28, 2021, 1 a.m. 6.2 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (19) N/A 17.0 μg/m3 (16) 12.3 μg/m3 (52) 52.0
 
Feb. 28, 2021, midnight 8.7 ppb (9) 0.2 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 17.0 ppb (16) N/A 17.0 μg/m3 (16) 11.8 μg/m3 (50) 50.0
 
Feb. 27, 2021, 11 p.m. 6.1 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) N/A 15.2 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
Feb. 27, 2021, 10 p.m. 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 15.1 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
Feb. 27, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A 15.3 μg/m3 (15) 10.6 μg/m3 (45) 45.0
 
Feb. 27, 2021, 8 p.m. 3.1 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 13.1 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
Feb. 27, 2021, 7 p.m. 2.4 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 13.2 μg/m3 (13) 8.2 μg/m3 (35) 35.0
 
Feb. 27, 2021, 6 p.m. 3.2 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 12.0 μg/m3 (12) 7.8 μg/m3 (33) 33.0
 
Feb. 27, 2021, 5 p.m. 4.8 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 12.1 μg/m3 (12) 8.0 μg/m3 (34) 34.0
 
Feb. 27, 2021, 4 p.m. 5.6 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 12.4 μg/m3 (12) 8.3 μg/m3 (35) 35.0
 
Feb. 27, 2021, 3 p.m. 8.3 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 12.6 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, 2 p.m. 8.0 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 10.9 μg/m3 (11) 7.8 μg/m3 (33) 33.0
 
Feb. 27, 2021, 1 p.m. 5.6 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 8.4 μg/m3 (8) 5.5 μg/m3 (23) 25.0
 
Feb. 27, 2021, noon 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 5.3 μg/m3 (5) 3.3 μg/m3 (14) 29.0
 
Feb. 27, 2021, 11 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 4.6 μg/m3 (5) 3.0 μg/m3 (13) 29.0
 
Feb. 27, 2021, 10 a.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 3.5 μg/m3 (4) 2.8 μg/m3 (12) 29.0
 
Feb. 27, 2021, 9 a.m. 2.5 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 4.6 μg/m3 (5) 3.4 μg/m3 (15) 30.0
 
Feb. 27, 2021, 8 a.m. 3.2 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 5.7 μg/m3 (6) 4.1 μg/m3 (18) 30.0
 
Feb. 27, 2021, 7 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 6.1 μg/m3 (6) 4.2 μg/m3 (18) 31.0
 
Feb. 27, 2021, 6 a.m. 3.5 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 5.6 μg/m3 (6) 3.9 μg/m3 (17) 30.0
 
Feb. 27, 2021, 5 a.m. 3.7 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 6.8 μg/m3 (7) 4.9 μg/m3 (21) 29.0
 
Feb. 27, 2021, 4 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 7.6 μg/m3 (8) 5.6 μg/m3 (24) 28.0
 
Feb. 27, 2021, 3 a.m. 4.6 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 7.1 μg/m3 (7) 5.1 μg/m3 (22) 25.0
 
Feb. 27, 2021, 2 a.m. 3.4 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A 7.1 μg/m3 (7) 5.2 μg/m3 (22) 29.0
 
Feb. 27, 2021, 1 a.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A 6.8 μg/m3 (7) 4.6 μg/m3 (20) 33.0
 
Feb. 27, 2021, midnight 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A 7.5 μg/m3 (7) 4.8 μg/m3 (20) 33.0
 
Feb. 26, 2021, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) N/A 7.3 μg/m3 (7) 4.8 μg/m3 (20) 34.0
 
Feb. 26, 2021, 10 p.m. 4.0 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 8.9 μg/m3 (9) 5.7 μg/m3 (24) 31.0
 
Feb. 26, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A 8.6 μg/m3 (8) 5.3 μg/m3 (23) 32.0
 
Feb. 26, 2021, 8 p.m. 4.9 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 8.6 μg/m3 (8) 5.0 μg/m3 (21) 33.0
 
Feb. 26, 2021, 7 p.m. 4.6 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 10.2 μg/m3 (10) 6.2 μg/m3 (26) 34.0
 
Feb. 26, 2021, 6 p.m. 3.8 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 9.3 μg/m3 (9) 5.1 μg/m3 (22) 37.0
 
Feb. 26, 2021, 5 p.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A 8.5 μg/m3 (8) 4.6 μg/m3 (20) 40.0
 
Feb. 26, 2021, 4 p.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A 9.1 μg/m3 (9) 4.4 μg/m3 (19) 40.0
 
Feb. 26, 2021, 3 p.m. 2.6 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 9.7 μg/m3 (9) 4.8 μg/m3 (20) 39.0
 
Feb. 26, 2021, 2 p.m. 3.3 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 10.6 μg/m3 (10) 6.4 μg/m3 (27) 38.0
 
Feb. 26, 2021, 1 p.m. 4.3 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.7 μg/m3 (11) 7.2 μg/m3 (31) 34.0
 
Feb. 26, 2021, noon 3.3 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.8 μg/m3 (11) 7.1 μg/m3 (30) 34.0
 
Feb. 26, 2021, 11 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 11.7 μg/m3 (11) 6.5 μg/m3 (28) 36.0
 
Feb. 26, 2021, 10 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 10.4 μg/m3 (10) 5.9 μg/m3 (25) 38.0
 
Feb. 26, 2021, 9 a.m. 10.2 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A 2.0 ppb (3) 33.0 ppb (31) N/A 9.8 μg/m3 (10) 5.1 μg/m3 (22) 31.0
 
Feb. 26, 2021, 8 a.m. 11.1 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A 3.0 ppb (5) 32.0 ppb (30) N/A 9.3 μg/m3 (9) 4.7 μg/m3 (20) 30.0
 
Feb. 26, 2021, 7 a.m. 3.7 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 9.2 μg/m3 (9) 5.4 μg/m3 (23) 39.0
 
Feb. 26, 2021, 6 a.m. 2.3 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 11.1 μg/m3 (11) 6.3 μg/m3 (27) 41.0
 
Feb. 26, 2021, 5 a.m. 3.5 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 10.3 μg/m3 (10) 6.2 μg/m3 (26) 40.0
 
Feb. 26, 2021, 4 a.m. 3.9 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 9.9 μg/m3 (10) 5.6 μg/m3 (24) 40.0
 
Feb. 26, 2021, 3 a.m. 3.4 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 45.0 ppb (42) N/A 9.5 μg/m3 (9) 5.3 μg/m3 (23) 42.0
 
Feb. 26, 2021, 2 a.m. 5.4 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A 11.8 μg/m3 (11) 6.4 μg/m3 (27) 40.0
 
Feb. 26, 2021, 1 a.m. 7.8 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (34) 39.0
 
Feb. 26, 2021, midnight 9.8 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 11.0 μg/m3 (11) 5.1 μg/m3 (22) 38.0
 
Feb. 25, 2021, 11 p.m. 8.1 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 9.9 μg/m3 (10) 3.6 μg/m3 (16) 41.0
 
Feb. 25, 2021, 10 p.m. 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 8.7 μg/m3 (9) 3.0 μg/m3 (13) 47.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A 6.5 μg/m3 (7) 2.8 μg/m3 (12) 49.0
 
Feb. 25, 2021, 8 p.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) N/A N/A 8.0 μg/m3 (8) 2.8 μg/m3 (12) 12.0
 
Feb. 25, 2021, 7 p.m. 2.6 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) N/A N/A 7.1 μg/m3 (7) 2.9 μg/m3 (13) 13.0
 
Feb. 25, 2021, 6 p.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) N/A N/A 6.8 μg/m3 (7) 3.0 μg/m3 (13) 13.0
 
Feb. 25, 2021, 5 p.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) N/A N/A 6.4 μg/m3 (6) 3.2 μg/m3 (14) 14.0
 
Feb. 25, 2021, 4 p.m. 2.1 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) N/A N/A 8.0 μg/m3 (8) 4.1 μg/m3 (18) 18.0
 
Feb. 25, 2021, 3 p.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) N/A N/A N/A N/A 3.0
 
Feb. 25, 2021, 2 p.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) N/A N/A 10.4 μg/m3 (10) 5.8 μg/m3 (25) 25.0
 
Feb. 25, 2021, 1 p.m. 8.3 ppb (8) 1.2 ppb (2) N/A 7.0 ppb (7) N/A 1.0 ppb (2) N/A N/A 16.9 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
Feb. 25, 2021, noon 16.5 ppb (16) 1.9 ppb (2) N/A 14.0 ppb (14) N/A 1.0 ppb (2) N/A N/A 22.2 μg/m3 (21) 14.3 μg/m3 (56) 56.0
 
Feb. 25, 2021, 11 a.m. 20.2 ppb (20) 0.3 ppb (1) N/A 20.0 ppb (19) N/A 1.0 ppb (2) N/A N/A 19.4 μg/m3 (18) 11.7 μg/m3 (49) 49.0
 
Feb. 25, 2021, 10 a.m. 14.1 ppb (14) 0.1 ppb (1) N/A 14.0 ppb (14) N/A 1.0 ppb (2) N/A N/A 26.9 μg/m3 (25) 12.8 μg/m3 (53) 53.0
 
Feb. 25, 2021, 9 a.m. 12.1 ppb (12) 0.0 ppb (0) N/A 12.0 ppb (12) N/A 1.0 ppb (2) N/A N/A 19.3 μg/m3 (18) 11.6 μg/m3 (49) 49.0
 
Feb. 25, 2021, 8 a.m. 10.8 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A 1.0 ppb (2) N/A N/A 17.2 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
Feb. 25, 2021, 7 a.m. 7.3 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 1.0 ppb (2) N/A N/A 14.4 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
Feb. 25, 2021, 6 a.m. 7.9 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) N/A N/A 14.5 μg/m3 (14) 8.8 μg/m3 (37) 37.0
 
Feb. 25, 2021, 5 a.m. 6.5 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A 1.0 ppb (2) N/A N/A 12.1 μg/m3 (12) 7.8 μg/m3 (33) 33.0
 
Feb. 25, 2021, 4 a.m. 5.8 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) N/A N/A 12.3 μg/m3 (12) 7.2 μg/m3 (31) 31.0
 
Feb. 25, 2021, 3 a.m. 4.9 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) N/A N/A 12.0 μg/m3 (12) 6.8 μg/m3 (29) 29.0
 
Feb. 25, 2021, 2 a.m. 5.9 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A 14.9 μg/m3 (14) 7.3 μg/m3 (31) 31.0
 
Feb. 25, 2021, 1 a.m. 8.0 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) N/A N/A 14.6 μg/m3 (14) 7.3 μg/m3 (31) 31.0
 
Feb. 25, 2021, midnight 10.4 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A 1.0 ppb (2) N/A N/A 12.3 μg/m3 (12) 5.1 μg/m3 (22) 22.0
 
Feb. 24, 2021, 11 p.m. 6.9 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A 1.0 ppb (2) N/A N/A 9.5 μg/m3 (9) 3.8 μg/m3 (16) 16.0
 
Feb. 24, 2021, 10 p.m. 5.3 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) N/A N/A 9.4 μg/m3 (9) 3.5 μg/m3 (15) 15.0
 
Feb. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 9.6 μg/m3 (9) 3.6 μg/m3 (16) 16.0
 
Feb. 24, 2021, 8 p.m. 6.2 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) N/A N/A 10.9 μg/m3 (11) 3.5 μg/m3 (15) 15.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 12.6 μg/m3 (12) 3.3 μg/m3 (14) 14.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 11.4 μg/m3 (11) 3.6 μg/m3 (16) 16.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 14.9 μg/m3 (14) 4.4 μg/m3 (19) 19.0
 
Feb. 24, 2021, 4 p.m. 7.8 ppb (8) 1.4 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (2) N/A N/A 15.8 μg/m3 (15) 5.4 μg/m3 (23) 23.0
 
Feb. 24, 2021, 3 p.m. 13.1 ppb (13) 3.5 ppb (4) N/A 9.0 ppb (9) N/A 1.0 ppb (2) N/A N/A 17.9 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Feb. 24, 2021, 2 p.m. 23.8 ppb (23) 8.0 ppb (8) N/A 16.0 ppb (16) N/A 1.0 ppb (2) N/A N/A 18.8 μg/m3 (18) 6.8 μg/m3 (29) 29.0
 
Feb. 24, 2021, 1 p.m. 55.6 ppb (53) 28.9 ppb (28) N/A 26.0 ppb (25) N/A 1.0 ppb (2) N/A N/A 23.4 μg/m3 (22) 9.3 μg/m3 (39) 53.0
 
Feb. 24, 2021, noon 21.9 ppb (21) 4.9 ppb (5) N/A 17.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 19.0 μg/m3 (18) 7.4 μg/m3 (31) 31.0
 
Feb. 24, 2021, 11 a.m. 15.4 ppb (15) 0.8 ppb (1) N/A 14.0 ppb (14) N/A 1.0 ppb (2) N/A N/A 16.8 μg/m3 (16) 8.3 μg/m3 (35) 35.0
 
Feb. 24, 2021, 10 a.m. 15.6 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (15) N/A 1.0 ppb (2) N/A N/A 15.8 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
Feb. 24, 2021, 9 a.m. 14.9 ppb (15) 0.3 ppb (1) N/A 14.0 ppb (14) N/A 1.0 ppb (2) N/A N/A 17.5 μg/m3 (17) 8.6 μg/m3 (36) 36.0
 
Feb. 24, 2021, 8 a.m. 16.8 ppb (16) 0.5 ppb (1) N/A 16.0 ppb (16) N/A 1.0 ppb (2) N/A N/A 16.4 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
Feb. 24, 2021, 7 a.m. 15.9 ppb (15) 0.0 ppb (0) N/A 16.0 ppb (16) N/A 1.0 ppb (2) N/A N/A 18.9 μg/m3 (18) 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 6 a.m. 20.3 ppb (20) 0.2 ppb (1) N/A 20.0 ppb (19) N/A 1.0 ppb (2) N/A N/A 14.9 μg/m3 (14) 7.0 μg/m3 (30) 30.0
 
Feb. 24, 2021, 5 a.m. 18.5 ppb (18) 0.2 ppb (1) N/A 18.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 14.0 μg/m3 (13) 5.9 μg/m3 (25) 25.0
 
Feb. 24, 2021, 4 a.m. 16.8 ppb (16) 0.5 ppb (1) N/A 16.0 ppb (16) N/A 1.0 ppb (2) N/A N/A 14.2 μg/m3 (14) 4.5 μg/m3 (19) 19.0
 
Feb. 24, 2021, 3 a.m. 15.4 ppb (15) 0.5 ppb (1) N/A 15.0 ppb (15) N/A 1.0 ppb (2) N/A N/A 13.3 μg/m3 (13) 4.4 μg/m3 (19) 19.0
 
Feb. 24, 2021, 2 a.m. 16.6 ppb (16) 0.1 ppb (1) N/A 16.0 ppb (16) N/A N/A N/A N/A 14.4 μg/m3 (14) 4.8 μg/m3 (20) 20.0
 
Feb. 24, 2021, 1 a.m. 17.8 ppb (17) 0.0 ppb (0) N/A 18.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 13.2 μg/m3 (13) 4.2 μg/m3 (18) 18.0
 
Feb. 24, 2021, midnight 8.9 ppb (9) -0.1 ppb (0) N/A 9.0 ppb (9) N/A 1.0 ppb (2) N/A N/A 13.5 μg/m3 (13) 3.4 μg/m3 (15) 15.0
 
Feb. 23, 2021, 11 p.m. 7.7 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) N/A N/A 11.2 μg/m3 (11) 3.3 μg/m3 (14) 14.0
 
Feb. 23, 2021, 10 p.m. 3.1 ppb (3) -2.6 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) N/A N/A 10.9 μg/m3 (11) 2.8 μg/m3 (12) 12.0
 
Feb. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 11.7 μg/m3 (11) 2.5 μg/m3 (11) 11.0
 
Feb. 23, 2021, 8 p.m. 6.3 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) N/A N/A 9.6 μg/m3 (9) 2.9 μg/m3 (13) 13.0
 
Feb. 23, 2021, 7 p.m. 5.3 ppb (5) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) N/A N/A 8.7 μg/m3 (9) 2.8 μg/m3 (12) 12.0
 
Feb. 23, 2021, 6 p.m. 4.7 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) N/A N/A 7.5 μg/m3 (7) 2.9 μg/m3 (13) 13.0
 
Feb. 23, 2021, 5 p.m. 5.0 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) N/A N/A 8.6 μg/m3 (8) 3.1 μg/m3 (13) 13.0
 
Feb. 23, 2021, 4 p.m. 4.7 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) N/A N/A 6.1 μg/m3 (6) 3.2 μg/m3 (14) 14.0
 
Feb. 23, 2021, 3 p.m. 4.3 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) N/A N/A 8.5 μg/m3 (8) 3.7 μg/m3 (16) 16.0
 
Feb. 23, 2021, 2 p.m. 8.2 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (2) N/A N/A 9.5 μg/m3 (9) 5.1 μg/m3 (22) 22.0
 
Feb. 23, 2021, 1 p.m. 14.1 ppb (14) 3.4 ppb (4) N/A 11.0 ppb (11) N/A 1.0 ppb (2) N/A N/A 9.7 μg/m3 (9) 6.2 μg/m3 (26) 26.0
 
Feb. 23, 2021, noon 38.8 ppb (37) 18.6 ppb (18) N/A 20.0 ppb (19) N/A 1.0 ppb (2) N/A N/A 12.4 μg/m3 (12) 8.5 μg/m3 (36) 37.0
 
Feb. 23, 2021, 11 a.m. 36.5 ppb (35) 15.1 ppb (15) N/A 21.0 ppb (20) N/A 1.0 ppb (2) N/A N/A 11.4 μg/m3 (11) 7.9 μg/m3 (33) 35.0
 
Feb. 23, 2021, 10 a.m. 28.6 ppb (27) 10.3 ppb (10) N/A 18.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 11.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Feb. 23, 2021, 9 a.m. 22.1 ppb (21) 4.7 ppb (5) N/A 17.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 10.5 μg/m3 (10) 7.9 μg/m3 (33) 33.0
 
Feb. 23, 2021, 8 a.m. 18.6 ppb (18) 1.0 ppb (1) N/A 17.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 18.5 μg/m3 (18) 14.2 μg/m3 (56) 56.0
 
Feb. 23, 2021, 7 a.m. 14.4 ppb (14) 0.3 ppb (1) N/A 14.0 ppb (14) N/A 1.0 ppb (2) N/A N/A 9.9 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Feb. 23, 2021, 6 a.m. 18.9 ppb (18) 1.4 ppb (2) N/A 17.0 ppb (17) N/A 1.0 ppb (2) N/A N/A 15.0 μg/m3 (14) 11.4 μg/m3 (48) 48.0
 
Feb. 23, 2021, 5 a.m. 17.0 ppb (17) 0.8 ppb (1) N/A 16.0 ppb (16) N/A 1.0 ppb (2) N/A N/A 12.2 μg/m3 (12) 8.9 μg/m3 (38) 38.0
 
Feb. 23, 2021, 4 a.m. 17.0 ppb (17) 1.4 ppb (2) N/A 15.0 ppb (15) N/A 1.0 ppb (2) N/A N/A 11.2 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Feb. 23, 2021, 3 a.m. 15.2 ppb (15) 0.7 ppb (1) N/A 14.0 ppb (14) N/A 1.0 ppb (2) N/A N/A 10.0 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
Feb. 23, 2021, 2 a.m. 10.2 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A N/A 8.1 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
Feb. 23, 2021, 1 a.m. 9.0 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A 1.0 ppb (2) N/A N/A 6.9 μg/m3 (7) 4.1 μg/m3 (18) 18.0
 
Feb. 23, 2021, midnight 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) N/A N/A 4.7 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
Feb. 22, 2021, 11 p.m. 12.4 ppb (12) 0.1 ppb (1) N/A 12.0 ppb (12) N/A 1.0 ppb (2) N/A N/A 7.6 μg/m3 (8) 4.4 μg/m3 (19) 19.0
 
Feb. 22, 2021, 10 p.m. 7.1 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 1.0 ppb (2) N/A N/A 6.9 μg/m3 (7) 3.6 μg/m3 (16) 16.0
 
Feb. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A 5.6 μg/m3 (6) 3.7 μg/m3 (16) 16.0
 
Feb. 22, 2021, 8 p.m. 6.6 ppb (7) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A 6.0 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Feb. 22, 2021, 7 p.m. 6.7 ppb (7) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A 6.1 μg/m3 (6) 4.3 μg/m3 (18) 18.0
 
Feb. 22, 2021, 6 p.m. 8.5 ppb (9) 1.4 ppb (2) N/A 7.0 ppb (7) N/A 1.0 ppb (2) N/A N/A 5.9 μg/m3 (6) 4.1 μg/m3 (18) 18.0