ID: 620

AQSQID: 370670022

Site Name: Hattieaven

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

Updated: July 25, 2021, 7:52 a.m.

Location: Winston Salem (E Winston), NC

Reporting: True, Located: True

Current AQI: 63.0

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
July 25, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 26.0 μg/m3 (25) 17.8 μg/m3 (63) 63.0
 
July 25, 2021, 5 a.m. 2.5 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 24.0 μg/m3 (23) 17.6 μg/m3 (63) 63.0
 
July 25, 2021, 4 a.m. 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 25.0 μg/m3 (24) 17.5 μg/m3 (63) 63.0
 
July 25, 2021, 3 a.m. 5.4 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 25.0 μg/m3 (24) 18.2 μg/m3 (64) 64.0
 
July 25, 2021, 2 a.m. 2.5 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A 24.0 μg/m3 (23) 17.1 μg/m3 (62) 62.0
 
July 25, 2021, 1 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 23.0 μg/m3 (22) 16.7 μg/m3 (61) 61.0
 
July 25, 2021, midnight 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 21.0 μg/m3 (20) 15.4 μg/m3 (58) 58.0
 
July 24, 2021, 11 p.m. 2.9 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 26.0 μg/m3 (25) 17.6 μg/m3 (63) 63.0
 
July 24, 2021, 10 p.m. 2.8 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 27.0 μg/m3 (25) 19.1 μg/m3 (66) 66.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A 29.0 μg/m3 (27) 19.3 μg/m3 (67) 67.0
 
July 24, 2021, 8 p.m. 1.7 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 59.0 ppb (65) N/A 31.0 μg/m3 (29) 21.5 μg/m3 (71) 71.0
 
July 24, 2021, 7 p.m. 1.2 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) N/A 31.0 μg/m3 (29) 21.5 μg/m3 (71) 71.0
 
July 24, 2021, 6 p.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 29.0 μg/m3 (27) 21.3 μg/m3 (71) 71.0
 
July 24, 2021, 5 p.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 30.0 μg/m3 (28) 22.2 μg/m3 (73) 73.0
 
July 24, 2021, 4 p.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 31.0 μg/m3 (29) 21.7 μg/m3 (72) 72.0
 
July 24, 2021, 3 p.m. 2.5 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 37.0 μg/m3 (35) 22.6 μg/m3 (74) 74.0
 
July 24, 2021, 2 p.m. 1.7 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 26.0 μg/m3 (25) 18.1 μg/m3 (64) 64.0
 
July 24, 2021, 1 p.m. 2.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 24.0 μg/m3 (23) 16.9 μg/m3 (62) 62.0
 
July 24, 2021, noon 2.8 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 24.0 μg/m3 (23) 17.1 μg/m3 (62) 62.0
 
July 24, 2021, 11 a.m. 6.1 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 26.0 μg/m3 (25) 19.1 μg/m3 (66) 66.0
 
July 24, 2021, 10 a.m. 3.4 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 27.0 μg/m3 (25) 19.1 μg/m3 (66) 66.0
 
July 24, 2021, 9 a.m. 3.2 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 27.0 μg/m3 (25) 19.9 μg/m3 (68) 68.0
 
July 24, 2021, 8 a.m. 3.7 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 28.0 μg/m3 (26) 20.8 μg/m3 (70) 70.0
 
July 24, 2021, 7 a.m. 4.4 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 28.0 μg/m3 (26) 20.9 μg/m3 (70) 70.0
 
July 24, 2021, 6 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 28.0 μg/m3 (26) 20.1 μg/m3 (68) 68.0
 
July 24, 2021, 5 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 27.0 μg/m3 (25) 20.0 μg/m3 (68) 68.0
 
July 24, 2021, 4 a.m. 4.6 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 28.0 μg/m3 (26) 20.6 μg/m3 (69) 69.0
 
July 24, 2021, 3 a.m. 6.1 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 29.0 μg/m3 (27) 20.8 μg/m3 (70) 70.0
 
July 24, 2021, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A 28.0 μg/m3 (26) 21.2 μg/m3 (71) 71.0
 
July 24, 2021, 1 a.m. 5.5 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 30.0 μg/m3 (28) 21.4 μg/m3 (71) 71.0
 
July 24, 2021, midnight 5.1 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 30.0 μg/m3 (28) 21.0 μg/m3 (70) 70.0
 
July 23, 2021, 11 p.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 39.0 μg/m3 (37) 21.4 μg/m3 (71) 78.0
 
July 23, 2021, 10 p.m. 2.4 ppb (3) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 73.0 ppb (103) N/A 30.0 μg/m3 (28) 21.5 μg/m3 (71) 103.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 75.0 ppb (104) N/A 30.0 μg/m3 (28) 22.0 μg/m3 (72) 104.0
 
July 23, 2021, 8 p.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 74.0 ppb (103) N/A 30.0 μg/m3 (28) 22.1 μg/m3 (73) 103.0
 
July 23, 2021, 7 p.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 70.0 ppb (100) N/A 29.0 μg/m3 (27) 21.9 μg/m3 (72) 100.0
 
July 23, 2021, 6 p.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 71.0 ppb (101) N/A 31.0 μg/m3 (29) 21.9 μg/m3 (72) 101.0
 
July 23, 2021, 5 p.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 67.0 ppb (91) N/A 32.0 μg/m3 (30) 22.1 μg/m3 (73) 91.0
 
July 23, 2021, 4 p.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 62.0 ppb (74) N/A 29.0 μg/m3 (27) 21.0 μg/m3 (70) 74.0
 
July 23, 2021, 3 p.m. 1.8 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 28.0 μg/m3 (26) 20.0 μg/m3 (68) 68.0
 
July 23, 2021, 2 p.m. 2.6 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 27.0 μg/m3 (25) 20.0 μg/m3 (68) 68.0
 
July 23, 2021, 1 p.m. 2.5 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 27.0 μg/m3 (25) 19.7 μg/m3 (67) 67.0
 
July 23, 2021, noon 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 28.0 μg/m3 (26) 20.2 μg/m3 (69) 69.0
 
July 23, 2021, 11 a.m. 4.2 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 28.0 μg/m3 (26) 20.4 μg/m3 (69) 69.0
 
July 23, 2021, 10 a.m. 3.8 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 28.0 μg/m3 (26) 20.6 μg/m3 (69) 69.0
 
July 23, 2021, 9 a.m. 3.7 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 28.0 μg/m3 (26) 20.9 μg/m3 (70) 70.0
 
July 23, 2021, 8 a.m. 4.8 ppb (5) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 29.0 μg/m3 (27) 21.0 μg/m3 (70) 70.0
 
July 23, 2021, 7 a.m. 4.8 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 29.0 μg/m3 (27) 21.4 μg/m3 (71) 71.0
 
July 23, 2021, 6 a.m. 7.0 ppb (7) 0.1 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 29.0 μg/m3 (27) 20.8 μg/m3 (70) 70.0
 
July 23, 2021, 5 a.m. 5.4 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 28.0 μg/m3 (26) 20.6 μg/m3 (69) 69.0
 
July 23, 2021, 3 a.m. 6.4 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 27.0 μg/m3 (25) 19.8 μg/m3 (68) 68.0
 
July 23, 2021, 2 a.m. 4.1 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) N/A 25.0 μg/m3 (24) 19.0 μg/m3 (66) 66.0
 
July 23, 2021, 1 a.m. 3.5 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 25.0 μg/m3 (24) 18.5 μg/m3 (65) 65.0
 
July 23, 2021, midnight 3.5 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 25.0 μg/m3 (24) 18.5 μg/m3 (65) 65.0
 
July 22, 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 27.0 μg/m3 (25) 19.8 μg/m3 (68) 68.0
 
July 22, 2021, 10 p.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 28.0 μg/m3 (26) 20.6 μg/m3 (69) 78.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 59.0 ppb (65) N/A 29.0 μg/m3 (27) 21.4 μg/m3 (71) 71.0
 
July 22, 2021, 8 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 57.0 ppb (58) N/A 29.0 μg/m3 (27) 22.3 μg/m3 (73) 73.0
 
July 22, 2021, 7 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 61.0 ppb (71) N/A 31.0 μg/m3 (29) 22.9 μg/m3 (74) 74.0
 
July 22, 2021, 6 p.m. 1.7 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 29.0 μg/m3 (27) 22.3 μg/m3 (73) 78.0
 
July 22, 2021, 5 p.m. 1.2 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 29.0 μg/m3 (27) 21.3 μg/m3 (71) 71.0
 
July 22, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 27.0 μg/m3 (25) 20.5 μg/m3 (69) 69.0
 
July 22, 2021, 3 p.m. 6.3 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 43.0 ppb (40) N/A N/A N/A 40.0
 
July 22, 2021, 2 p.m. 2.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 31.0 μg/m3 (29) 23.5 μg/m3 (75) 75.0
 
July 22, 2021, 1 p.m. 2.2 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 32.0 μg/m3 (30) 25.0 μg/m3 (79) 79.0
 
July 22, 2021, noon 2.9 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 35.0 μg/m3 (33) 26.8 μg/m3 (82) 82.0
 
July 22, 2021, 11 a.m. 3.5 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 38.0 μg/m3 (36) 29.7 μg/m3 (89) 89.0
 
July 22, 2021, 10 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 40.0 μg/m3 (38) 31.5 μg/m3 (92) 92.0
 
July 22, 2021, 9 a.m. 1.6 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 41.0 μg/m3 (38) 31.6 μg/m3 (93) 93.0
 
July 22, 2021, 8 a.m. 2.4 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 43.0 μg/m3 (40) 32.5 μg/m3 (94) 94.0
 
July 22, 2021, 7 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 43.0 μg/m3 (40) 33.7 μg/m3 (97) 97.0
 
July 22, 2021, 6 a.m. 3.4 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 47.0 μg/m3 (44) 36.5 μg/m3 (104) 104.0
 
July 22, 2021, 5 a.m. 9.7 ppb (10) 0.1 ppb (1) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 53.0 μg/m3 (50) 41.0 μg/m3 (115) 115.0
 
July 22, 2021, 4 a.m. 11.3 ppb (11) 0.1 ppb (1) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 60.0 μg/m3 (54) 44.1 μg/m3 (123) 123.0
 
July 22, 2021, 3 a.m. 12.3 ppb (12) 0.1 ppb (1) N/A 12.0 ppb (12) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 58.0 μg/m3 (53) 45.2 μg/m3 (125) 125.0
 
July 22, 2021, 2 a.m. 8.3 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 35.0 ppb (33) N/A 54.0 μg/m3 (50) 43.2 μg/m3 (120) 120.0
 
July 22, 2021, 1 a.m. 10.2 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 56.0 μg/m3 (52) 43.4 μg/m3 (121) 121.0
 
July 22, 2021, midnight 5.9 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 54.0 μg/m3 (50) 42.2 μg/m3 (118) 118.0
 
July 21, 2021, 11 p.m. 2.7 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 54.0 μg/m3 (50) 41.6 μg/m3 (117) 117.0
 
July 21, 2021, 10 p.m. 1.6 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 53.0 μg/m3 (50) 41.7 μg/m3 (117) 117.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 56.0 ppb (55) N/A 54.0 μg/m3 (50) 42.1 μg/m3 (118) 118.0
 
July 21, 2021, 8 p.m. 1.7 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 52.0 μg/m3 (49) 41.3 μg/m3 (116) 116.0
 
July 21, 2021, 7 p.m. 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 49.0 μg/m3 (46) 38.9 μg/m3 (110) 110.0
 
July 21, 2021, 6 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 51.0 μg/m3 (48) 36.1 μg/m3 (103) 103.0
 
July 21, 2021, 5 p.m. 1.6 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 57.0 ppb (58) N/A 48.0 μg/m3 (45) 37.1 μg/m3 (105) 105.0
 
July 21, 2021, 4 p.m. 2.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 57.0 ppb (58) N/A 51.0 μg/m3 (48) 37.8 μg/m3 (107) 107.0
 
July 21, 2021, 3 p.m. 2.6 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 48.0 μg/m3 (45) 35.2 μg/m3 (100) 100.0
 
July 21, 2021, 2 p.m. 2.8 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 44.0 μg/m3 (41) 32.5 μg/m3 (94) 94.0
 
July 21, 2021, 1 p.m. 3.2 ppb (4) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 42.0 μg/m3 (39) 30.9 μg/m3 (91) 91.0
 
July 21, 2021, noon 4.9 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 43.0 μg/m3 (40) 30.8 μg/m3 (91) 91.0
 
July 21, 2021, 11 a.m. 8.4 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 7.0 ppb (7) N/A 44.0 μg/m3 (41) 32.1 μg/m3 (94) 94.0
 
July 21, 2021, 10 a.m. 10.4 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 5.0 ppb (5) N/A 47.0 μg/m3 (44) 33.4 μg/m3 (96) 96.0
 
July 21, 2021, 9 a.m. 10.0 ppb (10) 0.5 ppb (1) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 6.0 ppb (6) N/A 47.0 μg/m3 (44) 32.4 μg/m3 (94) 94.0
 
July 21, 2021, 8 a.m. 7.6 ppb (8) 0.3 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 11.0 ppb (11) N/A 45.0 μg/m3 (42) 32.6 μg/m3 (95) 95.0
 
July 21, 2021, 7 a.m. 5.5 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 46.0 μg/m3 (43) 32.5 μg/m3 (94) 94.0
 
July 21, 2021, 6 a.m. 6.4 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 48.0 μg/m3 (45) 32.2 μg/m3 (94) 94.0
 
July 21, 2021, 5 a.m. 6.8 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 44.0 μg/m3 (41) 31.2 μg/m3 (92) 92.0
 
July 21, 2021, 4 a.m. 5.8 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 46.0 μg/m3 (43) 31.4 μg/m3 (92) 92.0
 
July 21, 2021, 3 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 43.0 μg/m3 (40) 30.7 μg/m3 (91) 91.0
 
July 21, 2021, 2 a.m. 6.1 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) N/A 42.0 μg/m3 (39) 31.9 μg/m3 (93) 93.0
 
July 21, 2021, 1 a.m. 6.8 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 44.0 μg/m3 (41) 32.3 μg/m3 (94) 94.0
 
July 21, 2021, midnight 8.8 ppb (9) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 43.0 μg/m3 (40) 33.2 μg/m3 (96) 96.0
 
July 20, 2021, 11 p.m. 6.5 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 44.0 μg/m3 (41) 32.6 μg/m3 (95) 95.0
 
July 20, 2021, 10 p.m. 2.9 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 41.0 μg/m3 (38) 32.6 μg/m3 (95) 95.0
 
July 20, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A 42.0 μg/m3 (39) 32.5 μg/m3 (94) 94.0
 
July 20, 2021, 8 p.m. 1.3 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 41.0 μg/m3 (38) 32.0 μg/m3 (93) 93.0
 
July 20, 2021, 7 p.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 53.0 ppb (50) N/A 40.0 μg/m3 (38) 31.3 μg/m3 (92) 92.0
 
July 20, 2021, 6 p.m. 1.3 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 40.0 μg/m3 (38) 30.2 μg/m3 (90) 90.0
 
July 20, 2021, 5 p.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 37.0 μg/m3 (35) 28.1 μg/m3 (85) 85.0
 
July 20, 2021, 4 p.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 33.0 μg/m3 (31) 25.3 μg/m3 (79) 79.0
 
July 20, 2021, 3 p.m. 5.7 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 26.0 μg/m3 (25) 20.4 μg/m3 (69) 69.0
 
July 20, 2021, 2 p.m. 7.0 ppb (7) 2.5 ppb (3) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 28.0 μg/m3 (26) 19.7 μg/m3 (67) 67.0
 
July 20, 2021, 1 p.m. 20.1 ppb (19) 8.8 ppb (9) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 9.0 ppb (9) N/A 31.0 μg/m3 (29) 20.2 μg/m3 (69) 69.0
 
July 20, 2021, noon 25.4 ppb (24) 16.4 ppb (16) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 3.0 ppb (3) N/A 31.0 μg/m3 (29) 18.9 μg/m3 (66) 66.0
 
July 20, 2021, 11 a.m. 16.1 ppb (16) 10.0 ppb (10) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 2.0 ppb (2) N/A 33.0 μg/m3 (31) 18.9 μg/m3 (66) 66.0
 
July 20, 2021, 10 a.m. 12.1 ppb (12) 1.9 ppb (2) N/A 10.0 ppb (10) N/A 1.0 ppb (2) 3.0 ppb (3) N/A 33.0 μg/m3 (31) 20.0 μg/m3 (68) 68.0
 
July 20, 2021, 9 a.m. 11.8 ppb (12) 2.0 ppb (2) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 2.0 ppb (2) N/A 31.0 μg/m3 (29) 19.5 μg/m3 (67) 67.0
 
July 20, 2021, 8 a.m. 10.8 ppb (11) 1.4 ppb (2) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 3.0 ppb (3) N/A 31.0 μg/m3 (29) 19.5 μg/m3 (67) 67.0
 
July 20, 2021, 7 a.m. 13.8 ppb (14) 2.5 ppb (3) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 2.0 ppb (2) N/A 32.0 μg/m3 (30) 19.3 μg/m3 (67) 67.0
 
July 20, 2021, 6 a.m. 16.0 ppb (16) 4.1 ppb (4) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 2.0 ppb (2) N/A 32.0 μg/m3 (30) 19.4 μg/m3 (67) 67.0
 
July 20, 2021, 5 a.m. 7.6 ppb (8) 0.2 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 11.0 ppb (11) N/A 28.0 μg/m3 (26) 18.6 μg/m3 (65) 65.0
 
July 20, 2021, 4 a.m. 5.9 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 13.0 ppb (13) N/A 27.0 μg/m3 (25) 18.9 μg/m3 (66) 66.0
 
July 20, 2021, 3 a.m. 5.7 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 26.0 μg/m3 (25) 18.4 μg/m3 (65) 65.0
 
July 20, 2021, 2 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) N/A 23.0 μg/m3 (22) 17.6 μg/m3 (63) 63.0
 
July 20, 2021, 1 a.m. 3.2 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 23.0 μg/m3 (22) 17.5 μg/m3 (63) 63.0
 
July 20, 2021, midnight 3.0 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 22.0 μg/m3 (21) 16.8 μg/m3 (61) 61.0
 
July 19, 2021, 11 p.m. 1.9 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 21.0 μg/m3 (20) 15.9 μg/m3 (59) 59.0
 
July 19, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 19.0 μg/m3 (18) 14.0 μg/m3 (55) 55.0
 
July 19, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A 17.0 μg/m3 (16) 12.3 μg/m3 (52) 52.0
 
July 19, 2021, 8 p.m. 3.3 ppb (4) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A 15.0 μg/m3 (14) 11.2 μg/m3 (47) 47.0
 
July 19, 2021, 7 p.m. 2.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 8.0 μg/m3 (8) 5.1 μg/m3 (22) 37.0
 
July 19, 2021, 6 p.m. 1.1 ppb (2) 0.1 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 7.0 μg/m3 (7) 4.4 μg/m3 (19) 37.0
 
July 19, 2021, 5 p.m. 1.3 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 36.0
 
July 19, 2021, 4 p.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 6.0 μg/m3 (6) 3.6 μg/m3 (16) 31.0
 
July 19, 2021, 3 p.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 6.0 μg/m3 (6) 2.7 μg/m3 (12) 28.0
 
July 19, 2021, 2 p.m. 1.0 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (7) 26.0
 
July 19, 2021, 1 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 21.0
 
July 19, 2021, noon 1.9 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 5.0 μg/m3 (5) 2.3 μg/m3 (10) 17.0
 
July 19, 2021, 11 a.m. 2.2 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 7.0 μg/m3 (7) 3.1 μg/m3 (13) 16.0
 
July 19, 2021, 10 a.m. 1.3 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 7.0 μg/m3 (7) 3.3 μg/m3 (14) 20.0
 
July 19, 2021, 9 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 10.0 μg/m3 (10) 4.4 μg/m3 (19) 19.0
 
July 19, 2021, 8 a.m. 1.2 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 13.0 μg/m3 (13) 5.0 μg/m3 (21) 21.0
 
July 19, 2021, 7 a.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 13.0 μg/m3 (13) 4.9 μg/m3 (21) 21.0
 
July 19, 2021, 6 a.m. 3.7 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) 5.6 μg/m3 (24) 24.0
 
July 19, 2021, 5 a.m. 7.0 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 15.0 μg/m3 (14) 5.5 μg/m3 (23) 23.0
 
July 19, 2021, 4 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 13.0 μg/m3 (13) 4.5 μg/m3 (19) 25.0
 
July 19, 2021, 3 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 13.0 μg/m3 (13) 4.9 μg/m3 (21) 21.0
 
July 19, 2021, 2 a.m. 5.3 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A 12.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
July 19, 2021, 1 a.m. 5.8 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 12.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
July 19, 2021, midnight 4.1 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 12.0 μg/m3 (12) 4.9 μg/m3 (21) 23.0
 
July 18, 2021, 11 p.m. 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 11.0 μg/m3 (11) 4.4 μg/m3 (19) 31.0
 
July 18, 2021, 10 p.m. 1.5 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 17.0 μg/m3 (16) 5.0 μg/m3 (21) 34.0
 
July 18, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A 11.0 μg/m3 (11) 4.9 μg/m3 (21) 31.0
 
July 18, 2021, 8 p.m. 1.3 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 9.0 μg/m3 (9) 4.8 μg/m3 (20) 31.0
 
July 18, 2021, 7 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 11.0 μg/m3 (11) 5.3 μg/m3 (23) 32.0
 
July 18, 2021, 6 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 10.0 μg/m3 (10) 5.1 μg/m3 (22) 33.0
 
July 18, 2021, 5 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 11.0 μg/m3 (11) 5.5 μg/m3 (23) 31.0
 
July 18, 2021, 4 p.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.0 μg/m3 (11) 5.8 μg/m3 (25) 29.0
 
July 18, 2021, 3 p.m. 1.8 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 11.0 μg/m3 (11) 5.5 μg/m3 (23) 25.0
 
July 18, 2021, 2 p.m. 2.4 ppb (3) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 10.0 μg/m3 (10) 5.1 μg/m3 (22) 22.0
 
July 18, 2021, 1 p.m. 2.8 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 14.0 ppb (13) N/A 10.0 μg/m3 (10) 4.7 μg/m3 (20) 20.0
 
July 18, 2021, noon 4.5 ppb (5) 1.4 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 9.0 ppb (9) N/A 11.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0
 
July 18, 2021, 11 a.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 9.0 ppb (9) N/A 12.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
July 18, 2021, 10 a.m. 3.7 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 10.0 ppb (10) N/A 12.0 μg/m3 (12) 4.9 μg/m3 (21) 21.0
 
July 18, 2021, 9 a.m. 3.1 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 12.0 ppb (12) N/A 11.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0
 
July 18, 2021, 8 a.m. 3.9 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 12.0 ppb (12) N/A 11.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0
 
July 18, 2021, 7 a.m. 5.3 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 12.0 ppb (12) N/A 11.0 μg/m3 (11) 4.6 μg/m3 (20) 20.0
 
July 18, 2021, 6 a.m. 7.1 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 9.0 ppb (9) N/A 11.0 μg/m3 (11) 4.5 μg/m3 (19) 19.0