ID: 86

AQSQID: 040131003

Site Name: Mesa - Brooks Reservoir

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

Updated: Jan. 18, 2021, 8:31 p.m.

Location: Mesa (Swest), AZ

Reporting: True, Located: True

Current AQI: 27.0

Mesa (Swest) AZ, US: 33.4105, -111.8651

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.3 ppb (4) 16.0 μg/m3 (15) 2.1 μg/m3 (9) 27.0
 
Jan. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.3 ppb (4) 19.4 μg/m3 (18) 2.3 μg/m3 (10) 25.0
 
Jan. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) 0.4 ppb (5) 32.9 μg/m3 (31) 8.2 μg/m3 (35) 35.0
 
Jan. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) 0.5 ppb (6) 37.1 μg/m3 (35) 6.8 μg/m3 (29) 35.0
 
Jan. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.5 ppb (6) 44.6 μg/m3 (42) 6.3 μg/m3 (27) 42.0
 
Jan. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.4 ppb (5) 37.1 μg/m3 (35) 7.1 μg/m3 (30) 35.0
 
Jan. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) 0.5 ppb (6) 34.5 μg/m3 (32) 12.2 μg/m3 (52) 52.0
 
Jan. 18, 2021, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.6 ppb (7) 32.6 μg/m3 (31) 13.2 μg/m3 (54) 54.0
 
Jan. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 27.3 μg/m3 (26) 10.5 μg/m3 (44) 44.0
 
Jan. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) 0.5 ppb (6) 28.3 μg/m3 (27) 10.8 μg/m3 (46) 46.0
 
Jan. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.7 ppb (8) 36.2 μg/m3 (34) 17.0 μg/m3 (62) 62.0
 
Jan. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (11) 42.9 μg/m3 (40) 20.9 μg/m3 (70) 70.0
 
Jan. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (11) 39.8 μg/m3 (37) 23.3 μg/m3 (75) 75.0
 
Jan. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (11) 45.9 μg/m3 (43) 25.8 μg/m3 (80) 80.0
 
Jan. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.3 ppb (15) 54.4 μg/m3 (51) 31.4 μg/m3 (92) 92.0
 
Jan. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.3 ppb (15) 49.3 μg/m3 (46) 25.2 μg/m3 (79) 79.0
 
Jan. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.2 ppb (14) 39.4 μg/m3 (37) 15.4 μg/m3 (58) 58.0
 
Jan. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.8 ppb (10) 28.5 μg/m3 (27) 6.8 μg/m3 (29) 29.0
 
Jan. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) 0.5 ppb (6) 16.2 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.4 ppb (5) 9.4 μg/m3 (9) 3.5 μg/m3 (15) 25.0
 
Jan. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.3 ppb (4) 6.6 μg/m3 (7) 1.7 μg/m3 (8) 33.0
 
Jan. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.2 ppb (3) 5.6 μg/m3 (6) 2.2 μg/m3 (10) 34.0
 
Jan. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 5.7 μg/m3 (6) 1.8 μg/m3 (8) 33.0
 
Jan. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 5.0 μg/m3 (5) 1.4 μg/m3 (6) 33.0
 
Jan. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.2 ppb (3) 4.2 μg/m3 (4) 0.8 μg/m3 (4) 32.0
 
Jan. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.2 ppb (3) 8.4 μg/m3 (8) 3.3 μg/m3 (14) 31.0
 
Jan. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.2 ppb (3) 6.2 μg/m3 (6) 1.7 μg/m3 (8) 30.0
 
Jan. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.2 ppb (3) 6.9 μg/m3 (7) 3.7 μg/m3 (16) 28.0
 
Jan. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.3 ppb (4) 5.0 μg/m3 (5) 2.2 μg/m3 (10) 27.0
 
Jan. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.3 ppb (4) 4.5 μg/m3 (5) 2.7 μg/m3 (12) 22.0
 
Jan. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.3 ppb (4) 4.1 μg/m3 (4) 2.1 μg/m3 (9) 27.0
 
Jan. 17, 2021, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 5.0 μg/m3 (5) 3.5 μg/m3 (15) 29.0
 
Jan. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 4.3 μg/m3 (4) 0.3 μg/m3 (2) 29.0
 
Jan. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 4.2 μg/m3 (4) 0.9 μg/m3 (4) 29.0
 
Jan. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 12.4 μg/m3 (12) 2.8 μg/m3 (12) 29.0
 
Jan. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 12.3 μg/m3 (12) 2.6 μg/m3 (11) 29.0
 
Jan. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.2 ppb (3) 26.1 μg/m3 (25) 10.2 μg/m3 (43) 43.0
 
Jan. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.7 ppb (8) 52.3 μg/m3 (49) 24.9 μg/m3 (78) 78.0
 
Jan. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.1 ppb (13) 45.8 μg/m3 (43) 24.3 μg/m3 (77) 77.0
 
Jan. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) 0.8 ppb (10) 45.2 μg/m3 (42) 20.3 μg/m3 (69) 69.0
 
Jan. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.3 ppb (15) 46.1 μg/m3 (43) 16.0 μg/m3 (60) 60.0
 
Jan. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.8 ppb (10) 31.6 μg/m3 (30) 8.6 μg/m3 (36) 36.0
 
Jan. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.7 ppb (8) 22.7 μg/m3 (22) 5.4 μg/m3 (23) 23.0
 
Jan. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.4 ppb (5) 14.7 μg/m3 (14) 4.3 μg/m3 (18) 25.0
 
Jan. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.3 ppb (4) 12.5 μg/m3 (12) 4.4 μg/m3 (19) 32.0
 
Jan. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.3 ppb (4) 12.0 μg/m3 (12) 4.0 μg/m3 (17) 31.0
 
Jan. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.3 ppb (4) 18.0 μg/m3 (17) 7.5 μg/m3 (32) 32.0
 
Jan. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.3 ppb (4) 19.9 μg/m3 (19) 7.3 μg/m3 (31) 31.0
 
Jan. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.3 ppb (4) 27.3 μg/m3 (26) 13.8 μg/m3 (55) 55.0
 
Jan. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.4 ppb (5) 31.7 μg/m3 (30) 13.4 μg/m3 (54) 54.0
 
Jan. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) 0.4 ppb (5) 38.0 μg/m3 (36) 9.1 μg/m3 (38) 38.0
 
Jan. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.8 ppb (10) 41.5 μg/m3 (39) 13.1 μg/m3 (54) 54.0
 
Jan. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.9 ppb (11) 33.7 μg/m3 (32) 12.5 μg/m3 (52) 52.0
 
Jan. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 29.2 μg/m3 (28) 11.5 μg/m3 (48) 48.0
 
Jan. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.5 ppb (6) 28.5 μg/m3 (27) 10.4 μg/m3 (44) 44.0
 
Jan. 16, 2021, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (6) 0.5 ppb (6) 32.6 μg/m3 (31) 11.2 μg/m3 (47) 47.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.5 ppb (6) 38.3 μg/m3 (36) 13.2 μg/m3 (54) 54.0
 
Jan. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) 0.6 ppb (7) 32.4 μg/m3 (30) 11.3 μg/m3 (48) 48.0
 
Jan. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) 0.5 ppb (6) 26.5 μg/m3 (25) 10.2 μg/m3 (43) 43.0
 
Jan. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) 0.5 ppb (6) 17.5 μg/m3 (17) 7.1 μg/m3 (30) 30.0
 
Jan. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) 0.3 ppb (4) 17.9 μg/m3 (17) 6.7 μg/m3 (28) 28.0
 
Jan. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.3 ppb (4) 27.6 μg/m3 (26) 10.1 μg/m3 (43) 43.0
 
Jan. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.9 ppb (11) 50.4 μg/m3 (47) 21.6 μg/m3 (71) 71.0
 
Jan. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.1 ppb (13) 50.8 μg/m3 (48) 19.1 μg/m3 (66) 66.0
 
Jan. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.2 ppb (14) 41.1 μg/m3 (39) 13.3 μg/m3 (54) 54.0
 
Jan. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.9 ppb (11) 36.6 μg/m3 (34) 8.2 μg/m3 (35) 35.0
 
Jan. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.6 ppb (7) 32.1 μg/m3 (30) 8.2 μg/m3 (35) 35.0
 
Jan. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.4 ppb (5) 14.0 μg/m3 (13) 4.2 μg/m3 (18) 22.0
 
Jan. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 9.0 μg/m3 (9) 1.8 μg/m3 (8) 33.0
 
Jan. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 14.5 μg/m3 (14) 3.9 μg/m3 (17) 33.0
 
Jan. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) 0.2 ppb (3) 20.9 μg/m3 (20) 6.8 μg/m3 (29) 32.0
 
Jan. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.3 ppb (4) 22.4 μg/m3 (21) 6.0 μg/m3 (25) 27.0
 
Jan. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.3 ppb (4) 20.8 μg/m3 (20) 2.8 μg/m3 (12) 27.0
 
Jan. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.3 ppb (4) 20.3 μg/m3 (19) 6.0 μg/m3 (25) 26.0
 
Jan. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.2 ppb (3) 19.4 μg/m3 (18) 3.6 μg/m3 (16) 30.0
 
Jan. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 22.4 μg/m3 (21) 4.7 μg/m3 (20) 29.0
 
Jan. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.3 ppb (4) 29.1 μg/m3 (27) 7.4 μg/m3 (31) 31.0
 
Jan. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.7 ppb (8) 33.8 μg/m3 (32) 12.9 μg/m3 (53) 53.0
 
Jan. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.6 ppb (7) 36.5 μg/m3 (34) 15.3 μg/m3 (58) 58.0
 
Jan. 15, 2021, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.8 ppb (10) 40.3 μg/m3 (38) 18.7 μg/m3 (65) 65.0
 
Jan. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 36.9 μg/m3 (35) 17.3 μg/m3 (62) 62.0
 
Jan. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.6 ppb (7) 34.9 μg/m3 (33) 17.4 μg/m3 (63) 63.0
 
Jan. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.7 ppb (8) 40.7 μg/m3 (38) 19.3 μg/m3 (67) 67.0
 
Jan. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (10) 48.3 μg/m3 (45) 21.8 μg/m3 (72) 72.0
 
Jan. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (11) 47.9 μg/m3 (45) 19.3 μg/m3 (67) 67.0
 
Jan. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.8 ppb (10) 44.5 μg/m3 (42) 16.2 μg/m3 (60) 60.0
 
Jan. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) 0.6 ppb (7) 46.4 μg/m3 (43) 18.3 μg/m3 (65) 65.0
 
Jan. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (11) 68.9 μg/m3 (58) 28.9 μg/m3 (87) 87.0
 
Jan. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (11) 81.9 μg/m3 (65) 31.0 μg/m3 (91) 91.0
 
Jan. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (12) 85.7 μg/m3 (67) 27.6 μg/m3 (84) 84.0
 
Jan. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (11) 66.3 μg/m3 (57) 23.0 μg/m3 (74) 74.0
 
Jan. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 13.0 ppb (13) 0.6 ppb (7) 56.2 μg/m3 (52) 18.6 μg/m3 (65) 65.0
 
Jan. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.4 ppb (5) 48.3 μg/m3 (45) 16.1 μg/m3 (60) 60.0
 
Jan. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 0.4 ppb (5) 36.1 μg/m3 (34) 12.4 μg/m3 (52) 52.0
 
Jan. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) 0.4 ppb (5) 33.1 μg/m3 (31) 12.1 μg/m3 (51) 51.0
 
Jan. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) 0.4 ppb (5) 36.0 μg/m3 (34) 14.6 μg/m3 (57) 57.0
 
Jan. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) 0.4 ppb (5) 42.9 μg/m3 (40) 18.1 μg/m3 (64) 64.0
 
Jan. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.5 ppb (6) 54.6 μg/m3 (51) 16.0 μg/m3 (60) 60.0
 
Jan. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) 0.8 ppb (10) 55.7 μg/m3 (52) 18.0 μg/m3 (64) 64.0
 
Jan. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) 0.8 ppb (10) 60.3 μg/m3 (54) 15.4 μg/m3 (58) 58.0
 
Jan. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 1.1 ppb (13) 107.4 μg/m3 (77) 25.5 μg/m3 (80) 80.0
 
Jan. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (12) 68.1 μg/m3 (58) 18.7 μg/m3 (65) 65.0
 
Jan. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (11) 44.3 μg/m3 (42) 15.5 μg/m3 (59) 59.0
 
Jan. 14, 2021, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 42.3 μg/m3 (40) 15.3 μg/m3 (58) 58.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 28.8 μg/m3 (27) 9.8 μg/m3 (41) 41.0
 
Jan. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.5 ppb (6) 30.8 μg/m3 (29) 10.7 μg/m3 (45) 45.0
 
Jan. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.6 ppb (7) 43.4 μg/m3 (41) 18.7 μg/m3 (65) 65.0
 
Jan. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (11) 37.4 μg/m3 (35) 16.6 μg/m3 (61) 61.0
 
Jan. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (10) 37.0 μg/m3 (35) 16.3 μg/m3 (60) 60.0
 
Jan. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) 0.6 ppb (7) 39.0 μg/m3 (37) 15.6 μg/m3 (59) 59.0
 
Jan. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (11) 49.0 μg/m3 (46) 18.5 μg/m3 (65) 65.0
 
Jan. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (12) 61.9 μg/m3 (55) 22.4 μg/m3 (73) 73.0
 
Jan. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.1 ppb (13) 60.7 μg/m3 (54) 20.3 μg/m3 (69) 69.0
 
Jan. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (11) 48.0 μg/m3 (45) 15.7 μg/m3 (59) 59.0
 
Jan. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.7 ppb (8) 32.3 μg/m3 (30) 9.8 μg/m3 (41) 41.0
 
Jan. 14, 2021, midnight N/A N/A N/A N/A N/A N/A 18.0 ppb (17) 0.4 ppb (5) 15.7 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
Jan. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.3 ppb (4) 12.7 μg/m3 (12) 2.8 μg/m3 (12) 30.0
 
Jan. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.2 ppb (3) 11.8 μg/m3 (11) 3.9 μg/m3 (17) 31.0
 
Jan. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.2 ppb (3) 15.7 μg/m3 (15) 6.9 μg/m3 (29) 31.0
 
Jan. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 20.7 μg/m3 (20) 9.3 μg/m3 (39) 39.0
 
Jan. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.3 ppb (4) 25.4 μg/m3 (24) 9.2 μg/m3 (39) 39.0
 
Jan. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) 0.4 ppb (5) 22.0 μg/m3 (21) 7.3 μg/m3 (31) 31.0
 
Jan. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.5 ppb (6) 37.6 μg/m3 (35) 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.7 ppb (8) 44.7 μg/m3 (42) 8.2 μg/m3 (35) 42.0
 
Jan. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.5 ppb (6) 25.7 μg/m3 (24) 5.3 μg/m3 (23) 24.0
 
Jan. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) 0.5 ppb (6) 22.7 μg/m3 (22) 8.0 μg/m3 (34) 34.0
 
Jan. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.5 ppb (6) 23.5 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
Jan. 13, 2021, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 21.0 μg/m3 (20) 10.9 μg/m3 (46) 46.0
 
Jan. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 21.1 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.5 ppb (6) 23.3 μg/m3 (22) 11.6 μg/m3 (49) 49.0
 
Jan. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.5 ppb (6) 20.4 μg/m3 (19) 9.6 μg/m3 (40) 40.0
 
Jan. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.3 ppb (4) 12.3 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Jan. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) 0.3 ppb (4) 16.9 μg/m3 (16) 5.6 μg/m3 (24) 24.0
 
Jan. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.3 ppb (4) 24.8 μg/m3 (23) 8.4 μg/m3 (36) 36.0
 
Jan. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.6 ppb (7) 46.7 μg/m3 (44) 18.9 μg/m3 (66) 66.0
 
Jan. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (12) 52.6 μg/m3 (49) 21.9 μg/m3 (72) 72.0
 
Jan. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 1.1 ppb (13) 57.6 μg/m3 (53) 22.0 μg/m3 (72) 72.0
 
Jan. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.8 ppb (10) 47.0 μg/m3 (44) 15.6 μg/m3 (59) 59.0
 
Jan. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.6 ppb (7) 28.9 μg/m3 (27) 10.1 μg/m3 (43) 43.0
 
Jan. 13, 2021, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.4 ppb (5) 12.6 μg/m3 (12) 4.6 μg/m3 (20) 25.0
 
Jan. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.2 ppb (3) 7.2 μg/m3 (7) 3.5 μg/m3 (15) 35.0
 
Jan. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.2 ppb (3) 6.7 μg/m3 (7) 1.6 μg/m3 (7) 36.0
 
Jan. 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.2 ppb (3) 7.0 μg/m3 (7) 2.2 μg/m3 (10) 35.0
 
Jan. 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) 0.2 ppb (3) 9.0 μg/m3 (9) 4.8 μg/m3 (20) 35.0
 
Jan. 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 4.8 μg/m3 (5) -0.5 μg/m3 (0) 33.0
 
Jan. 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.2 ppb (3) 7.9 μg/m3 (8) 1.8 μg/m3 (8) 34.0
 
Jan. 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.2 ppb (3) 14.4 μg/m3 (14) 3.2 μg/m3 (14) 34.0
 
Jan. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 20.7 μg/m3 (20) 6.5 μg/m3 (28) 29.0
 
Jan. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.3 ppb (4) 21.8 μg/m3 (21) 4.7 μg/m3 (20) 26.0
 
Jan. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.4 ppb (5) 11.0 μg/m3 (11) 1.4 μg/m3 (6) 15.0
 
Jan. 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 5.3 μg/m3 (5) 2.5 μg/m3 (11) 29.0
 
Jan. 12, 2021, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.2 ppb (3) 7.6 μg/m3 (8) 2.7 μg/m3 (12) 33.0
 
Jan. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.2 ppb (3) 6.7 μg/m3 (7) 3.6 μg/m3 (16) 28.0
 
Jan. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.2 ppb (3) 6.7 μg/m3 (7) 3.0 μg/m3 (13) 28.0
 
Jan. 12, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.3 ppb (4) 10.3 μg/m3 (10) 5.1 μg/m3 (22) 22.0
 
Jan. 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.3 ppb (4) 8.6 μg/m3 (8) 5.2 μg/m3 (22) 29.0
 
Jan. 12, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) 0.2 ppb (3) 9.6 μg/m3 (9) 4.8 μg/m3 (20) 31.0
 
Jan. 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.3 ppb (4) 10.4 μg/m3 (10) 4.0 μg/m3 (17) 25.0
 
Jan. 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.4 ppb (5) 21.8 μg/m3 (21) 8.9 μg/m3 (38) 38.0
 
Jan. 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.6 ppb (7) 37.1 μg/m3 (35) 16.5 μg/m3 (61) 61.0
 
Jan. 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.9 ppb (11) 39.1 μg/m3 (37) 13.5 μg/m3 (54) 54.0
 
Jan. 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) 0.8 ppb (10) 26.6 μg/m3 (25) 7.2 μg/m3 (31) 31.0
 
Jan. 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) 0.7 ppb (8) 8.5 μg/m3 (8) -3.0 μg/m3 (0) 14.0
 
Jan. 12, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) 0.3 ppb (4) 4.4 μg/m3 (5) 0.1 μg/m3 (1) 33.0
 
Jan. 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.2 ppb (3) 3.4 μg/m3 (4) 0.1 μg/m3 (1) 38.0
 
Jan. 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) 0.2 ppb (3) 7.3 μg/m3 (7) 2.6 μg/m3 (11) 38.0
 
Jan. 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.2 ppb (3) 7.4 μg/m3 (7) 1.5 μg/m3 (7) 38.0
 
Jan. 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) 0.2 ppb (3) N/A N/A 37.0