AQSQID: 040131003

Site Name: Mesa - Brooks Reservoir

Location: Mesa, AZ

Reporting: True, Located: True

Current AQI: 44.0

Mesa AZ, US: 33.4105, -111.8651

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 24, 2019, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (44) 0.1 ppb (1) 3.0 μg/m3 (3) -0.3 μg/m3 (0) 44.0
 
May 23, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 5.0 μg/m3 (5) 1.4 μg/m3 (6) 42.0
 
May 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) 0.1 ppb (1) 5.0 μg/m3 (5) 1.8 μg/m3 (8) 42.0
 
May 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 5.0 μg/m3 (5) 2.6 μg/m3 (11) 41.0
 
May 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 7.0 μg/m3 (6) 4.2 μg/m3 (18) 40.0
 
May 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 6.0 μg/m3 (5) 1.6 μg/m3 (7) 40.0
 
May 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 8.0 μg/m3 (7) 1.3 μg/m3 (5) 39.0
 
May 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.0 ppb (0) 7.0 μg/m3 (6) 1.2 μg/m3 (5) 38.0
 
May 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) 8.0 μg/m3 (7) 2.7 μg/m3 (11) 37.0
 
May 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) 10.0 μg/m3 (9) 4.6 μg/m3 (19) 35.0
 
May 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 9.0 μg/m3 (8) 4.5 μg/m3 (19) 34.0
 
May 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) 6.0 μg/m3 (5) 2.7 μg/m3 (11) 29.0
 
May 23, 2019, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 16.0 μg/m3 (15) 1.4 μg/m3 (6) 32.0
 
May 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 10.0 μg/m3 (9) 5.8 μg/m3 (24) 34.0
 
May 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.0 ppb (0) 15.0 μg/m3 (14) 5.8 μg/m3 (24) 36.0
 
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.0 ppb (0) 17.0 μg/m3 (15) 2.6 μg/m3 (11) 38.0
 
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 12.0 μg/m3 (11) 2.4 μg/m3 (10) 35.0
 
May 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 5.0 μg/m3 (5) -0.9 μg/m3 (0) 35.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 37.0
 
May 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 14.0 μg/m3 (13) 2.7 μg/m3 (11) 39.0
 
May 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 11.0 μg/m3 (10) 2.7 μg/m3 (11) 32.0
 
May 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 10.0 μg/m3 (9) 2.1 μg/m3 (9) 32.0
 
May 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.2 ppb (2) 10.0 μg/m3 (9) 3.6 μg/m3 (15) 38.0
 
May 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 9.0 μg/m3 (8) 2.5 μg/m3 (10) 41.0
 
May 23, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 6.0 μg/m3 (5) 0.0 μg/m3 (0) 41.0
 
May 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 7.0 μg/m3 (6) 2.7 μg/m3 (11) 41.0
 
May 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 6.0 μg/m3 (5) 2.6 μg/m3 (11) 42.0
 
May 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 42.0
 
May 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) 0.1 ppb (1) 8.0 μg/m3 (7) 1.1 μg/m3 (5) 43.0
 
May 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) 0.1 ppb (1) 11.0 μg/m3 (10) 2.6 μg/m3 (11) 42.0
 
May 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 40.0
 
May 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 17.0 μg/m3 (15) 5.7 μg/m3 (24) 39.0
 
May 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) 24.0 μg/m3 (22) 5.4 μg/m3 (23) 37.0
 
May 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) 28.0 μg/m3 (25) 5.0 μg/m3 (21) 35.0
 
May 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.1 ppb (1) 29.0 μg/m3 (26) 5.2 μg/m3 (22) 33.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 49.0 μg/m3 (45) 11.2 μg/m3 (47) 47.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 52.0 μg/m3 (47) 11.8 μg/m3 (49) 49.0
 
May 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.1 ppb (1) 47.0 μg/m3 (43) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) 77.0 μg/m3 (61) 13.9 μg/m3 (54) 61.0
 
May 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 75.0 μg/m3 (60) 14.9 μg/m3 (56) 60.0
 
May 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 83.0 μg/m3 (64) 15.4 μg/m3 (57) 64.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.2 ppb (2) 69.0 μg/m3 (57) 12.8 μg/m3 (52) 57.0
 
May 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.2 ppb (2) 35.0 μg/m3 (32) 7.6 μg/m3 (32) 40.0
 
May 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.2 ppb (2) 9.0 μg/m3 (8) 2.2 μg/m3 (9) 38.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.2 ppb (2) 13.0 μg/m3 (12) 2.1 μg/m3 (9) 40.0
 
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) 0.2 ppb (2) 16.0 μg/m3 (15) 1.8 μg/m3 (8) 45.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) 0.1 ppb (1) 12.0 μg/m3 (11) 1.1 μg/m3 (5) 46.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) 0.1 ppb (1) 13.0 μg/m3 (12) 2.6 μg/m3 (11) 45.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A N/A 59.0 ppb (45) 0.1 ppb (1) 12.0 μg/m3 (11) 1.5 μg/m3 (6) 45.0
 
May 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) 0.1 ppb (1) 15.0 μg/m3 (14) 2.6 μg/m3 (11) 45.0
 
May 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) 0.1 ppb (1) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 43.0
 
May 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) 0.1 ppb (1) 11.0 μg/m3 (10) 1.5 μg/m3 (6) 45.0
 
May 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) 0.1 ppb (1) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 44.0
 
May 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) 0.1 ppb (1) 15.0 μg/m3 (14) 5.9 μg/m3 (25) 44.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 11.0 μg/m3 (10) 3.8 μg/m3 (16) 42.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 15.0 μg/m3 (14) 3.6 μg/m3 (15) 42.0
 
May 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) 20.0 μg/m3 (18) 3.9 μg/m3 (16) 37.0
 
May 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 19.0 μg/m3 (17) 5.1 μg/m3 (21) 31.0
 
May 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 24.0 μg/m3 (22) 2.8 μg/m3 (12) 25.0
 
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 20.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) 13.0 μg/m3 (12) 0.0 μg/m3 (0) 22.0
 
May 21, 2019, 11 a.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) 3.8 μg/m3 (16) 27.0
 
May 21, 2019, 10 a.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
 
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 1.0 μg/m3 (1) -0.3 μg/m3 (0) 32.0
 
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 4.0 μg/m3 (4) 2.3 μg/m3 (10) 35.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 4.0 μg/m3 (4) 2.1 μg/m3 (9) 35.0
 
May 21, 2019, 6 a.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) 0.7 μg/m3 (3) 35.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.1 ppb (1) 4.0 μg/m3 (4) -0.1 μg/m3 (0) 36.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 6.0 μg/m3 (5) 0.3 μg/m3 (1) 35.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.2 ppb (2) 5.0 μg/m3 (5) 0.2 μg/m3 (1) 38.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 3.0 μg/m3 (3) -1.0 μg/m3 (0) 40.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 8.0 μg/m3 (7) 2.7 μg/m3 (11) 42.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (42) 0.1 ppb (1) 9.0 μg/m3 (8) 0.9 μg/m3 (4) 42.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 9.0 μg/m3 (8) 1.3 μg/m3 (5) 42.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.1 ppb (1) 7.0 μg/m3 (6) -0.4 μg/m3 (0) 42.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) 0.1 ppb (1) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 42.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 5.0 μg/m3 (5) -0.2 μg/m3 (0) 41.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 6.0 μg/m3 (5) 0.2 μg/m3 (1) 41.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) 9.0 μg/m3 (8) 2.5 μg/m3 (10) 38.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.1 ppb (1) N/A N/A 38.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) N/A N/A 37.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 14.0 μg/m3 (13) 2.1 μg/m3 (9) 35.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) 20.0 μg/m3 (18) 4.4 μg/m3 (18) 18.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 18.0 μg/m3 (16) 5.2 μg/m3 (22) 30.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 14.0 μg/m3 (13) 5.6 μg/m3 (23) 35.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) 12.0 μg/m3 (11) 3.7 μg/m3 (15) 38.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 12.0 μg/m3 (11) 3.5 μg/m3 (15) 39.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) 14.0 μg/m3 (13) 3.1 μg/m3 (13) 38.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 16.0 μg/m3 (15) 2.9 μg/m3 (12) 35.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 14.0 μg/m3 (13) 3.2 μg/m3 (13) 32.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 16.0 μg/m3 (15) 4.6 μg/m3 (19) 32.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) 11.0 μg/m3 (10) 4.1 μg/m3 (17) 30.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) 10.0 μg/m3 (9) 3.3 μg/m3 (14) 28.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) 12.0 μg/m3 (11) 3.2 μg/m3 (13) 28.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) 15.0 μg/m3 (14) 3.9 μg/m3 (16) 30.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 10.0 μg/m3 (9) 2.3 μg/m3 (10) 32.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.1 ppb (1) 8.0 μg/m3 (7) 2.3 μg/m3 (10) 36.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 39.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) 0.1 ppb (1) 11.0 μg/m3 (10) 3.2 μg/m3 (13) 43.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) 0.1 ppb (1) 16.0 μg/m3 (15) 6.1 μg/m3 (25) 45.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) 0.1 ppb (1) 12.0 μg/m3 (11) 2.9 μg/m3 (12) 45.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) 0.1 ppb (1) 14.0 μg/m3 (13) 5.6 μg/m3 (23) 44.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) 0.1 ppb (1) 9.0 μg/m3 (8) 2.8 μg/m3 (12) 43.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) 0.1 ppb (1) 9.0 μg/m3 (8) 2.8 μg/m3 (12) 44.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 40.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.2 ppb (2) 17.0 μg/m3 (15) 3.4 μg/m3 (14) 34.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 28.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 24.0 μg/m3 (22) 8.3 μg/m3 (35) 35.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 19.0 μg/m3 (17) 5.1 μg/m3 (21) 24.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 18.0 μg/m3 (16) 2.2 μg/m3 (9) 23.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.3 ppb (3) 17.0 μg/m3 (15) 4.8 μg/m3 (20) 21.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.3 ppb (3) 11.0 μg/m3 (10) 2.5 μg/m3 (10) 25.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.2 ppb (2) 9.0 μg/m3 (8) 3.1 μg/m3 (13) 38.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 16.0 μg/m3 (15) 5.3 μg/m3 (22) 35.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.5 ppb (6) 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.4 ppb (4) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 8.0 μg/m3 (7) 2.7 μg/m3 (11) 32.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 8.0 μg/m3 (7) 3.6 μg/m3 (15) 39.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) 0.1 ppb (1) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 42.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) 0.1 ppb (1) 6.0 μg/m3 (5) 1.5 μg/m3 (6) 44.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A N/A 59.0 ppb (45) 0.1 ppb (1) 7.0 μg/m3 (6) 2.4 μg/m3 (10) 45.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) 0.0 ppb (0) 7.0 μg/m3 (6) 4.3 μg/m3 (18) 47.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) 0.1 ppb (1) 7.0 μg/m3 (6) 4.8 μg/m3 (20) 48.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) 0.1 ppb (1) 4.0 μg/m3 (4) 1.2 μg/m3 (5) 49.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) 0.1 ppb (1) 4.0 μg/m3 (4) 1.8 μg/m3 (8) 47.0
 
May 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) 0.1 ppb (1) 3.0 μg/m3 (3) 0.6 μg/m3 (2) 43.0
 
May 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) 0.1 ppb (1) 7.0 μg/m3 (6) 1.1 μg/m3 (5) 43.0
 
May 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 13.0 μg/m3 (12) 2.3 μg/m3 (10) 41.0
 
May 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 19.0 μg/m3 (17) 5.9 μg/m3 (25) 35.0
 
May 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 19.0 μg/m3 (17) 4.3 μg/m3 (18) 28.0
 
May 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.2 ppb (2) 23.0 μg/m3 (21) 5.3 μg/m3 (22) 22.0
 
May 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.3 ppb (3) 18.0 μg/m3 (16) 5.2 μg/m3 (22) 22.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.1 ppb (1) 13.0 μg/m3 (12) 4.6 μg/m3 (19) 28.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 19.0 μg/m3 (17) 4.1 μg/m3 (17) 23.0
 
May 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.3 ppb (3) 15.0 μg/m3 (14) 4.8 μg/m3 (20) 20.0
 
May 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.3 ppb (3) 14.0 μg/m3 (13) 4.7 μg/m3 (20) 20.0
 
May 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 13.0 μg/m3 (12) 3.2 μg/m3 (13) 25.0
 
May 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 11.0 μg/m3 (10) 2.8 μg/m3 (12) 29.0
 
May 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 32.0
 
May 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.2 ppb (2) 28.0 μg/m3 (25) 18.7 μg/m3 (64) 64.0
 
May 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 8.0 μg/m3 (7) 1.8 μg/m3 (8) 35.0
 
May 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.2 ppb (2) 7.0 μg/m3 (6) 1.5 μg/m3 (6) 36.0
 
May 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 8.0 μg/m3 (7) 3.2 μg/m3 (13) 39.0
 
May 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 10.0 μg/m3 (9) 2.9 μg/m3 (12) 40.0
 
May 18, 2019, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) 13.0 μg/m3 (12) 3.5 μg/m3 (15) 38.0
 
May 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) 14.0 μg/m3 (13) 4.3 μg/m3 (18) 40.0
 
May 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.1 ppb (1) 17.0 μg/m3 (15) 5.1 μg/m3 (21) 41.0
 
May 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) 0.1 ppb (1) 26.0 μg/m3 (24) 8.1 μg/m3 (34) 43.0
 
May 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) 0.1 ppb (1) 27.0 μg/m3 (25) 9.1 μg/m3 (38) 49.0
 
May 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) 0.1 ppb (1) 23.0 μg/m3 (21) 5.4 μg/m3 (23) 49.0
 
May 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) 0.1 ppb (1) 24.0 μg/m3 (22) 4.5 μg/m3 (19) 48.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) 0.1 ppb (1) 27.0 μg/m3 (25) 4.6 μg/m3 (19) 44.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.2 ppb (2) 26.0 μg/m3 (24) 5.2 μg/m3 (22) 40.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.2 ppb (2) 28.0 μg/m3 (25) 7.6 μg/m3 (32) 38.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 25.0 μg/m3 (23) 5.0 μg/m3 (21) 32.0
 
May 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 31.0 μg/m3 (28) 6.1 μg/m3 (25) 30.0
 
May 17, 2019, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 46.0 μg/m3 (42) 11.0 μg/m3 (46) 46.0
 
May 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 41.0 μg/m3 (37) 7.9 μg/m3 (33) 37.0
 
May 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.1 ppb (1) 48.0 μg/m3 (44) 7.4 μg/m3 (31) 44.0
 
May 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) 55.0 μg/m3 (50) 8.0 μg/m3 (33) 50.0
 
May 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.0 ppb (0) 62.0 μg/m3 (54) 8.4 μg/m3 (35) 54.0
 
May 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.0 ppb (0) 61.0 μg/m3 (53) 8.7 μg/m3 (36) 53.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.0 ppb (0) 59.0 μg/m3 (52) 9.2 μg/m3 (38) 52.0
 
May 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.0 ppb (0) 58.0 μg/m3 (52) 10.8 μg/m3 (45) 52.0
 
May 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.0 ppb (0) 41.0 μg/m3 (37) 7.7 μg/m3 (32) 37.0
 
May 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.0 ppb (0) 24.0 μg/m3 (22) 2.2 μg/m3 (9) 28.0
 
May 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 24.0 μg/m3 (22) 3.4 μg/m3 (14) 32.0
 
May 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.1 ppb (1) 21.0 μg/m3 (19) 4.9 μg/m3 (20) 33.0