AQSQID: 040131003

Site Name: Mesa - Brooks Reservoir

Location: Mesa, AZ

Reporting: True, Located: True

Current AQI: 35.0

Mesa AZ, US: 33.4105, -111.8651

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 32.0 μg/m3 (29) 4.5 μg/m3 (19) 31.0
 
Jan. 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 20.0 μg/m3 (18) 8.4 μg/m3 (35) 35.0
 
Jan. 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.3 ppb (3) 24.0 μg/m3 (22) 9.5 μg/m3 (40) 40.0
 
Jan. 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.4 ppb (4) 32.0 μg/m3 (29) 12.4 μg/m3 (51) 51.0
 
Jan. 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.4 ppb (4) 23.0 μg/m3 (21) 6.1 μg/m3 (25) 25.0
 
Jan. 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.4 ppb (4) 22.0 μg/m3 (20) 7.3 μg/m3 (30) 30.0
 
Jan. 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.3 ppb (3) 18.0 μg/m3 (16) 7.8 μg/m3 (32) 32.0
 
Jan. 21, 2019, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.2 ppb (2) 13.0 μg/m3 (12) 5.5 μg/m3 (23) 23.0
 
Jan. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.2 ppb (2) 17.0 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.2 ppb (2) 17.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
Jan. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.2 ppb (2) 22.0 μg/m3 (20) 11.1 μg/m3 (46) 46.0
 
Jan. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.2 ppb (2) 27.0 μg/m3 (25) 18.7 μg/m3 (64) 64.0
 
Jan. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.3 ppb (3) 27.0 μg/m3 (25) 16.6 μg/m3 (60) 60.0
 
Jan. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.5 ppb (6) 34.0 μg/m3 (31) 22.6 μg/m3 (73) 73.0
 
Jan. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.5 ppb (6) 26.0 μg/m3 (24) 15.3 μg/m3 (57) 57.0
 
Jan. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.5 ppb (6) 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.3 ppb (3) 12.0 μg/m3 (11) 6.5 μg/m3 (27) 27.0
 
Jan. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.3 ppb (3) 13.0 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
Jan. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.4 ppb (4) 8.0 μg/m3 (7) 3.5 μg/m3 (15) 15.0
 
Jan. 21, 2019, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 3.0 μg/m3 (3) 1.5 μg/m3 (6) 25.0
 
Jan. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 3.0 μg/m3 (3) 1.7 μg/m3 (7) 32.0
 
Jan. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 3.0 μg/m3 (3) 2.6 μg/m3 (11) 32.0
 
Jan. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 3.0 μg/m3 (3) 1.9 μg/m3 (8) 32.0
 
Jan. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) 2.0 μg/m3 (2) 1.2 μg/m3 (5) 30.0
 
Jan. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) 1.0 μg/m3 (1) 0.6 μg/m3 (2) 29.0
 
Jan. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) 2.0 μg/m3 (2) 1.6 μg/m3 (7) 28.0
 
Jan. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) 7.0 μg/m3 (6) 4.1 μg/m3 (17) 25.0
 
Jan. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.3 ppb (3) 9.0 μg/m3 (8) 5.4 μg/m3 (23) 23.0
 
Jan. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) 6.0 μg/m3 (5) 4.2 μg/m3 (18) 18.0
 
Jan. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.2 ppb (2) 6.0 μg/m3 (5) 4.6 μg/m3 (19) 19.0
 
Jan. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) 3.0 μg/m3 (3) 2.7 μg/m3 (11) 22.0
 
Jan. 20, 2019, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) 1.0 μg/m3 (1) 0.4 μg/m3 (2) 17.0
 
Jan. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) 0.0 μg/m3 (0) 1.0 μg/m3 (4) 21.0
 
Jan. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.1 ppb (1) 0.0 μg/m3 (0) 0.2 μg/m3 (1) 23.0
 
Jan. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.1 ppb (1) 2.0 μg/m3 (2) 1.1 μg/m3 (5) 24.0
 
Jan. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.1 ppb (1) 3.0 μg/m3 (3) 1.5 μg/m3 (6) 24.0
 
Jan. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) 4.0 μg/m3 (4) 1.6 μg/m3 (7) 22.0
 
Jan. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.1 ppb (1) 10.0 μg/m3 (9) 6.2 μg/m3 (26) 26.0
 
Jan. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.4 ppb (4) 17.0 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
Jan. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.6 ppb (7) 20.0 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.6 ppb (7) 21.0 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
Jan. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.6 ppb (7) 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
Jan. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.4 ppb (4) 5.0 μg/m3 (5) 2.2 μg/m3 (9) 18.0
 
Jan. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.2 ppb (2) 2.0 μg/m3 (2) 0.9 μg/m3 (4) 31.0
 
Jan. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 35.0
 
Jan. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 3.0 μg/m3 (3) 2.1 μg/m3 (9) 35.0
 
Jan. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 1.0 μg/m3 (1) 0.7 μg/m3 (3) 34.0
 
Jan. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.1 ppb (1) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 33.0
 
Jan. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 5.0 μg/m3 (5) 3.1 μg/m3 (13) 32.0
 
Jan. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 3.0 μg/m3 (3) 0.5 μg/m3 (2) 32.0
 
Jan. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) 2.0 μg/m3 (2) 0.2 μg/m3 (1) 30.0
 
Jan. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) 3.0 μg/m3 (3) 0.7 μg/m3 (3) 27.0
 
Jan. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.1 ppb (1) 2.0 μg/m3 (2) 0.4 μg/m3 (2) 26.0
 
Jan. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) 0.0 μg/m3 (0) -1.0 μg/m3 (0) 27.0
 
Jan. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) 1.0 μg/m3 (1) 0.2 μg/m3 (1) 27.0
 
Jan. 19, 2019, noon N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.1 ppb (1) -1.0 μg/m3 (0) -1.2 μg/m3 (0) 28.0
 
Jan. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) 5.0 μg/m3 (5) -0.6 μg/m3 (0) 29.0
 
Jan. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.1 ppb (1) 5.0 μg/m3 (5) 0.3 μg/m3 (1) 28.0
 
Jan. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) 1.0 μg/m3 (1) 0.7 μg/m3 (3) 28.0
 
Jan. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.1 ppb (1) 3.0 μg/m3 (3) 2.1 μg/m3 (9) 23.0
 
Jan. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
Jan. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.4 ppb (4) 16.0 μg/m3 (15) 13.1 μg/m3 (52) 52.0
 
Jan. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.3 ppb (3) 25.0 μg/m3 (23) 20.2 μg/m3 (67) 67.0
 
Jan. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.4 ppb (4) 19.0 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.3 ppb (3) 13.0 μg/m3 (12) 5.7 μg/m3 (24) 24.0
 
Jan. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.3 ppb (3) 11.0 μg/m3 (10) 5.8 μg/m3 (24) 24.0
 
Jan. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 11.0 μg/m3 (10) 6.3 μg/m3 (26) 26.0
 
Jan. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 11.0 μg/m3 (10) 5.3 μg/m3 (22) 25.0
 
Jan. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 13.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
Jan. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 21.0 μg/m3 (19) 15.9 μg/m3 (58) 58.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 15.0 μg/m3 (14) 9.2 μg/m3 (38) 38.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 14.0 μg/m3 (13) 6.8 μg/m3 (28) 28.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 16.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.3 ppb (3) 11.0 μg/m3 (10) 6.3 μg/m3 (26) 26.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.3 ppb (3) 16.0 μg/m3 (15) 9.4 μg/m3 (39) 39.0
 
Jan. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.4 ppb (4) 22.0 μg/m3 (20) 11.4 μg/m3 (48) 48.0
 
Jan. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.6 ppb (7) 28.0 μg/m3 (25) 15.8 μg/m3 (58) 58.0
 
Jan. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.5 ppb (6) 29.0 μg/m3 (26) 17.6 μg/m3 (62) 62.0
 
Jan. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.4 ppb (4) 14.0 μg/m3 (13) 6.3 μg/m3 (26) 26.0
 
Jan. 18, 2019, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.2 ppb (2) 16.0 μg/m3 (15) 9.4 μg/m3 (39) 39.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.2 ppb (2) 21.0 μg/m3 (19) 13.1 μg/m3 (52) 52.0
 
Jan. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.2 ppb (2) 21.0 μg/m3 (19) 13.8 μg/m3 (54) 54.0
 
Jan. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.2 ppb (2) 16.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.2 ppb (2) 14.0 μg/m3 (13) 4.7 μg/m3 (20) 20.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.3 ppb (3) 17.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Jan. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.3 ppb (3) 19.0 μg/m3 (17) 13.3 μg/m3 (53) 53.0
 
Jan. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.4 ppb (4) 23.0 μg/m3 (21) 16.3 μg/m3 (59) 59.0
 
Jan. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.4 ppb (4) 24.0 μg/m3 (22) 17.6 μg/m3 (62) 62.0
 
Jan. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.4 ppb (4) 27.0 μg/m3 (25) 19.8 μg/m3 (67) 67.0
 
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.5 ppb (6) 22.0 μg/m3 (20) 11.8 μg/m3 (49) 49.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.4 ppb (4) 15.0 μg/m3 (14) 5.5 μg/m3 (23) 23.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.3 ppb (3) 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 6.0 μg/m3 (5) 3.6 μg/m3 (15) 24.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 6.0 μg/m3 (5) 4.2 μg/m3 (18) 25.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 6.0 μg/m3 (5) 2.7 μg/m3 (11) 25.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 7.0 μg/m3 (6) 4.1 μg/m3 (17) 23.0
 
Jan. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 2.0 μg/m3 (2) 0.3 μg/m3 (1) 23.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 2.0 μg/m3 (2) 0.2 μg/m3 (1) 22.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) 5.0 μg/m3 (5) 1.5 μg/m3 (6) 16.0
 
Jan. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.2 ppb (2) 17.0 μg/m3 (15) 6.3 μg/m3 (26) 26.0
 
Jan. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.6 ppb (7) 29.0 μg/m3 (26) 7.8 μg/m3 (32) 32.0
 
Jan. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.5 ppb (6) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.3 ppb (3) 10.0 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
Jan. 17, 2019, noon N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.2 ppb (2) 4.0 μg/m3 (4) 2.5 μg/m3 (10) 10.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.1 ppb (1) 1.0 μg/m3 (1) 1.1 μg/m3 (5) 11.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.1 ppb (1) 7.0 μg/m3 (6) 4.9 μg/m3 (20) 20.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.2 ppb (2) 6.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.2 ppb (2) 4.0 μg/m3 (4) 1.9 μg/m3 (8) 8.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.1 ppb (1) 4.0 μg/m3 (4) 3.8 μg/m3 (16) 16.0
 
Jan. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 3.0 μg/m3 (3) 1.8 μg/m3 (8) 31.0
 
Jan. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 6.0 μg/m3 (5) 3.3 μg/m3 (14) 31.0
 
Jan. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.1 ppb (1) 7.0 μg/m3 (6) 4.9 μg/m3 (20) 26.0
 
Jan. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 5.0 μg/m3 (5) 3.2 μg/m3 (13) 25.0
 
Jan. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 10.0 μg/m3 (9) 6.1 μg/m3 (25) 25.0
 
Jan. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.3 ppb (3) 13.0 μg/m3 (12) 5.6 μg/m3 (23) 23.0
 
Jan. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.3 ppb (3) 16.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
Jan. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.4 ppb (4) 19.0 μg/m3 (17) 12.1 μg/m3 (50) 50.0
 
Jan. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.8 ppb (9) 22.0 μg/m3 (20) 14.8 μg/m3 (56) 56.0
 
Jan. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.7 ppb (8) 12.0 μg/m3 (11) 9.6 μg/m3 (40) 40.0
 
Jan. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.5 ppb (6) 10.0 μg/m3 (9) 8.5 μg/m3 (35) 35.0
 
Jan. 16, 2019, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.4 ppb (4) 6.0 μg/m3 (5) 5.7 μg/m3 (24) 24.0
 
Jan. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.3 ppb (3) 10.0 μg/m3 (9) 9.9 μg/m3 (41) 41.0
 
Jan. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.3 ppb (3) 8.0 μg/m3 (7) 7.9 μg/m3 (33) 33.0
 
Jan. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.2 ppb (2) 5.0 μg/m3 (5) 5.4 μg/m3 (23) 23.0
 
Jan. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.2 ppb (2) 4.0 μg/m3 (4) 3.6 μg/m3 (15) 15.0
 
Jan. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.2 ppb (2) 1.0 μg/m3 (1) 0.8 μg/m3 (3) 10.0
 
Jan. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.2 ppb (2) 1.0 μg/m3 (1) 1.3 μg/m3 (5) 12.0
 
Jan. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.2 ppb (2) 6.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.2 ppb (2) 7.0 μg/m3 (6) 6.4 μg/m3 (27) 27.0
 
Jan. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.3 ppb (3) 10.0 μg/m3 (9) 8.6 μg/m3 (36) 36.0
 
Jan. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.3 ppb (3) 13.0 μg/m3 (12) 10.7 μg/m3 (45) 45.0
 
Jan. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.3 ppb (3) 4.0 μg/m3 (4) 1.3 μg/m3 (5) 5.0
 
Jan. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.2 ppb (2) -4.0 μg/m3 (0) N/A 15.0
 
Jan. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.2 ppb (2) 6.0 μg/m3 (5) 2.3 μg/m3 (10) 18.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.2 ppb (2) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 9.0 μg/m3 (8) 3.5 μg/m3 (15) 19.0
 
Jan. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 9.0 μg/m3 (8) 3.5 μg/m3 (15) 21.0
 
Jan. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) 8.0 μg/m3 (7) 4.5 μg/m3 (19) 22.0
 
Jan. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.1 ppb (1) 10.0 μg/m3 (9) 3.9 μg/m3 (16) 18.0
 
Jan. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.2 ppb (2) 15.0 μg/m3 (14) 6.1 μg/m3 (25) 25.0
 
Jan. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.2 ppb (2) 13.0 μg/m3 (12) 3.8 μg/m3 (16) 16.0
 
Jan. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.3 ppb (3) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.3 ppb (3) 11.0 μg/m3 (10) 2.9 μg/m3 (12) 12.0
 
Jan. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.3 ppb (3) 13.0 μg/m3 (12) 7.5 μg/m3 (31) 31.0
 
Jan. 15, 2019, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.2 ppb (2) 10.0 μg/m3 (9) 7.5 μg/m3 (31) 31.0
 
Jan. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.1 ppb (1) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 12.0
 
Jan. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.1 ppb (1) -1.0 μg/m3 (0) -1.6 μg/m3 (0) 16.0
 
Jan. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.1 ppb (1) 0.0 μg/m3 (0) -0.7 μg/m3 (0) 18.0
 
Jan. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.1 ppb (1) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 15.0
 
Jan. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.3 ppb (3) 9.0 μg/m3 (8) 5.3 μg/m3 (22) 22.0
 
Jan. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.3 ppb (3) 11.0 μg/m3 (10) 7.3 μg/m3 (30) 30.0
 
Jan. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.3 ppb (3) 8.0 μg/m3 (7) 5.5 μg/m3 (23) 23.0
 
Jan. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.2 ppb (2) 11.0 μg/m3 (10) 8.3 μg/m3 (35) 35.0
 
Jan. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.3 ppb (3) 11.0 μg/m3 (10) 5.6 μg/m3 (23) 23.0
 
Jan. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.4 ppb (4) 12.0 μg/m3 (11) 4.1 μg/m3 (17) 17.0
 
Jan. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.3 ppb (3) 12.0 μg/m3 (11) 5.3 μg/m3 (22) 22.0
 
Jan. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 6.0 μg/m3 (5) 4.4 μg/m3 (18) 19.0
 
Jan. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) 1.0 μg/m3 (1) 0.2 μg/m3 (1) 25.0
 
Jan. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 27.0
 
Jan. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 27.0
 
Jan. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 4.0 μg/m3 (4) 2.3 μg/m3 (10) 25.0
 
Jan. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 5.0 μg/m3 (5) 3.2 μg/m3 (13) 24.0
 
Jan. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.2 ppb (2) 6.0 μg/m3 (5) 4.2 μg/m3 (18) 22.0
 
Jan. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) N/A N/A 18.0
 
Jan. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.3 ppb (3) N/A N/A 9.0
 
Jan. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 3.4 μg/m3 (14) 14.0
 
Jan. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.2 ppb (2) -1.0 μg/m3 (0) -3.8 μg/m3 (0) 8.0
 
Jan. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.1 ppb (1) 8.0 μg/m3 (7) 8.1 μg/m3 (34) 34.0