AQSQID: 040134011

Site Name: Buckeye

Location: Maricopa Co, AZ

Reporting: True, Located: True

Current AQI: 20.0

Maricopa Co AZ, US: 33.37, -112.6207

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 26, 2019, 4 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) 0.3 ppb (3) N/A N/A 20.0
 
March 26, 2019, 3 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A N/A N/A 46.0 μg/m3 (42) N/A 42.0
 
March 26, 2019, 2 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 4.0 ppb (3) 0.4 ppb (4) 102.0 μg/m3 (74) N/A 74.0
 
March 26, 2019, 1 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 2.0 ppb (2) 0.3 ppb (3) 66.0 μg/m3 (56) N/A 56.0
 
March 26, 2019, noon N/A N/A N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) 0.3 ppb (3) 39.0 μg/m3 (35) N/A 35.0
 
March 26, 2019, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 6.0 ppb (5) 0.2 ppb (2) 30.0 μg/m3 (27) N/A 27.0
 
March 26, 2019, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) 0.2 ppb (2) 24.0 μg/m3 (22) N/A 22.0
 
March 26, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) 0.2 ppb (2) 30.0 μg/m3 (27) N/A 27.0
 
March 26, 2019, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) 0.2 ppb (2) 41.0 μg/m3 (37) N/A 37.0
 
March 26, 2019, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 6.0 ppb (5) 0.2 ppb (2) 38.0 μg/m3 (35) N/A 35.0
 
March 26, 2019, 6 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 9.0 ppb (7) 0.2 ppb (2) 40.0 μg/m3 (36) N/A 36.0
 
March 26, 2019, 5 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 12.0 ppb (9) 0.2 ppb (2) 38.0 μg/m3 (35) N/A 35.0
 
March 26, 2019, 4 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.2 ppb (2) 30.0 μg/m3 (27) N/A 27.0
 
March 26, 2019, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 0.2 ppb (2) 63.0 μg/m3 (54) N/A 54.0
 
March 26, 2019, 2 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 35.0 ppb (27) 0.2 ppb (2) 65.0 μg/m3 (55) N/A 55.0
 
March 26, 2019, 1 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 42.0 ppb (32) 0.3 ppb (3) 60.0 μg/m3 (52) N/A 52.0
 
March 26, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 65.0 ppb (50) 0.2 ppb (2) 29.0 μg/m3 (26) N/A 50.0
 
March 25, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 69.0 ppb (53) 0.2 ppb (2) 31.0 μg/m3 (28) N/A 53.0
 
March 25, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 70.0 ppb (54) 0.2 ppb (2) 33.0 μg/m3 (30) N/A 54.0
 
March 25, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 70.0 ppb (54) 0.2 ppb (2) 30.0 μg/m3 (27) N/A 54.0
 
March 25, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 67.0 ppb (52) 0.2 ppb (2) 24.0 μg/m3 (22) N/A 52.0
 
March 25, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 62.0 ppb (48) 0.2 ppb (2) 30.0 μg/m3 (27) N/A 48.0
 
March 25, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 55.0 ppb (42) 0.2 ppb (2) 46.0 μg/m3 (42) N/A 42.0
 
March 25, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 47.0 ppb (36) 0.2 ppb (2) 62.0 μg/m3 (54) N/A 54.0
 
March 25, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.2 ppb (2) 54.0 μg/m3 (49) N/A 49.0
 
March 25, 2019, 3 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) 0.3 ppb (3) 47.0 μg/m3 (43) N/A 43.0
 
March 25, 2019, 2 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 7.0 ppb (5) 0.3 ppb (3) 96.0 μg/m3 (70) N/A 70.0
 
March 25, 2019, 1 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 0.3 ppb (3) 41.0 μg/m3 (37) N/A 37.0
 
March 25, 2019, noon N/A N/A N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.2 ppb (2) 67.0 μg/m3 (56) N/A 56.0
 
March 25, 2019, 11 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) 0.2 ppb (2) 48.0 μg/m3 (44) N/A 44.0
 
March 25, 2019, 10 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 9.0 ppb (7) 0.2 ppb (2) 21.0 μg/m3 (19) N/A 19.0
 
March 25, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) 0.3 ppb (3) 27.0 μg/m3 (25) N/A 25.0
 
March 25, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.3 ppb (3) 39.0 μg/m3 (35) N/A 35.0
 
March 25, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) 0.2 ppb (2) 41.0 μg/m3 (37) N/A 37.0
 
March 25, 2019, 6 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 10.0 ppb (8) 0.2 ppb (2) 32.0 μg/m3 (29) N/A 29.0
 
March 25, 2019, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) 0.2 ppb (2) 32.0 μg/m3 (29) N/A 29.0
 
March 25, 2019, 4 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 24.0 μg/m3 (22) N/A 22.0
 
March 25, 2019, 3 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) 0.2 ppb (2) 78.0 μg/m3 (62) N/A 62.0
 
March 25, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.2 ppb (2) 48.0 μg/m3 (44) N/A 44.0
 
March 25, 2019, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 38.0
 
March 25, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) 0.1 ppb (1) 19.0 μg/m3 (17) N/A 43.0
 
March 24, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.1 ppb (1) 15.0 μg/m3 (14) N/A 44.0
 
March 24, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) 0.1 ppb (1) 15.0 μg/m3 (14) N/A 44.0
 
March 24, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) 0.1 ppb (1) 13.0 μg/m3 (12) N/A 43.0
 
March 24, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.2 ppb (2) 18.0 μg/m3 (16) N/A 44.0
 
March 24, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) 0.2 ppb (2) 15.0 μg/m3 (14) N/A 43.0
 
March 24, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.2 ppb (2) 14.0 μg/m3 (13) N/A 39.0
 
March 24, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.2 ppb (2) 15.0 μg/m3 (14) N/A 36.0
 
March 24, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.2 ppb (2) 20.0 μg/m3 (18) N/A 31.0
 
March 24, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.2 ppb (2) 32.0 μg/m3 (29) N/A 29.0
 
March 24, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 21.0
 
March 24, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 17.0
 
March 24, 2019, noon N/A N/A N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) 0.2 ppb (2) 17.0 μg/m3 (15) N/A 15.0
 
March 24, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.2 ppb (2) 18.0 μg/m3 (16) N/A 18.0
 
March 24, 2019, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.2 ppb (2) 11.0 μg/m3 (10) N/A 17.0
 
March 24, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.3 ppb (3) 18.0 μg/m3 (16) N/A 16.0
 
March 24, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.2 ppb (2) 15.0 μg/m3 (14) N/A 20.0
 
March 24, 2019, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 16.0 ppb (12) 0.2 ppb (2) 16.0 μg/m3 (15) N/A 15.0
 
March 24, 2019, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) 0.3 ppb (3) 24.0 μg/m3 (22) N/A 22.0
 
March 24, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 17.0
 
March 24, 2019, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.2 ppb (2) 26.0 μg/m3 (24) N/A 24.0
 
March 24, 2019, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 24.0 ppb (18) 0.2 ppb (2) 25.0 μg/m3 (23) N/A 23.0
 
March 24, 2019, 2 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 27.0 ppb (21) 0.2 ppb (2) 23.0 μg/m3 (21) N/A 21.0
 
March 24, 2019, 1 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 35.0 ppb (27) 0.2 ppb (2) 21.0 μg/m3 (19) N/A 27.0
 
March 24, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.1 ppb (1) 13.0 μg/m3 (12) N/A 38.0
 
March 23, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) 0.1 ppb (1) 12.0 μg/m3 (11) N/A 42.0
 
March 23, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 55.0 ppb (42) 0.1 ppb (1) 8.0 μg/m3 (7) N/A 42.0
 
March 23, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) 0.1 ppb (1) 4.0 μg/m3 (4) N/A 42.0
 
March 23, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) 0.1 ppb (1) 13.0 μg/m3 (12) N/A 43.0
 
March 23, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) 0.2 ppb (2) 18.0 μg/m3 (16) N/A 41.0
 
March 23, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.2 ppb (2) 21.0 μg/m3 (19) N/A 36.0
 
March 23, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.2 ppb (2) 41.0 μg/m3 (37) N/A 37.0
 
March 23, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.2 ppb (2) 33.0 μg/m3 (30) N/A 30.0
 
March 23, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.2 ppb (2) 30.0 μg/m3 (27) N/A 27.0
 
March 23, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) 0.2 ppb (2) 61.0 μg/m3 (53) N/A 53.0
 
March 23, 2019, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 17.0
 
March 23, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 17.0
 
March 23, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.2 ppb (2) 24.0 μg/m3 (22) N/A 22.0
 
March 23, 2019, 10 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 9.0 ppb (7) 0.2 ppb (2) 21.0 μg/m3 (19) N/A 19.0
 
March 21, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.2 ppb (2) 10.0 μg/m3 (9) N/A 36.0
 
March 21, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 10.0 μg/m3 (9) N/A 35.0
 
March 21, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.2 ppb (2) 8.0 μg/m3 (7) N/A 35.0
 
March 21, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.1 ppb (1) 9.0 μg/m3 (8) N/A 31.0
 
March 21, 2019, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.2 ppb (2) 15.0 μg/m3 (14) N/A 22.0
 
March 21, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 22.0 ppb (17) 0.5 ppb (6) 13.0 μg/m3 (12) N/A 17.0
 
March 21, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) 0.2 ppb (2) 9.0 μg/m3 (8) N/A 18.0
 
March 21, 2019, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.2 ppb (2) 10.0 μg/m3 (9) N/A 22.0
 
March 21, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 25.0
 
March 21, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.2 ppb (2) 11.0 μg/m3 (10) N/A 25.0
 
March 21, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.1 ppb (1) 13.0 μg/m3 (12) N/A 23.0
 
March 21, 2019, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.1 ppb (1) 25.0 μg/m3 (23) N/A 23.0
 
March 21, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.1 ppb (1) 13.0 μg/m3 (12) N/A 21.0
 
March 21, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.1 ppb (1) 16.0 μg/m3 (15) N/A 26.0
 
March 21, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.1 ppb (1) 34.0 μg/m3 (31) N/A 31.0
 
March 21, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.1 ppb (1) 31.0 μg/m3 (28) N/A 28.0
 
March 21, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.1 ppb (1) 33.0 μg/m3 (30) N/A 30.0
 
March 21, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.1 ppb (1) 35.0 μg/m3 (32) N/A 32.0
 
March 21, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.1 ppb (1) 22.0 μg/m3 (20) N/A 30.0
 
March 20, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.1 ppb (1) 31.0 μg/m3 (28) N/A 30.0
 
March 20, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.1 ppb (1) 19.0 μg/m3 (17) N/A 30.0
 
March 20, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 14.0 μg/m3 (13) N/A 35.0
 
March 20, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.1 ppb (1) 9.0 μg/m3 (8) N/A 35.0
 
March 20, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.1 ppb (1) 18.0 μg/m3 (16) N/A 32.0
 
March 20, 2019, 6 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A N/A 23.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 74.0 μg/m3 (60) N/A 60.0
 
March 20, 2019, 4 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) N/A 41.0 μg/m3 (37) N/A 37.0
 
March 20, 2019, 3 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) 69.0 μg/m3 (57) N/A 57.0
 
March 20, 2019, 2 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 13.0 ppb (10) 0.4 ppb (4) 69.0 μg/m3 (57) N/A 57.0
 
March 20, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 0.3 ppb (3) 40.0 μg/m3 (36) N/A 36.0
 
March 20, 2019, noon N/A N/A N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) 0.3 ppb (3) 28.0 μg/m3 (25) N/A 25.0
 
March 20, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) 0.3 ppb (3) 26.0 μg/m3 (24) N/A 24.0
 
March 20, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 16.0 ppb (12) 0.3 ppb (3) 18.0 μg/m3 (16) N/A 16.0
 
March 20, 2019, 9 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 9.0 ppb (7) 0.3 ppb (3) 22.0 μg/m3 (20) N/A 20.0
 
March 20, 2019, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 18.0 μg/m3 (16) N/A 16.0
 
March 20, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 14.0 ppb (11) 0.3 ppb (3) 29.0 μg/m3 (26) N/A 26.0
 
March 20, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.2 ppb (2) 27.0 μg/m3 (25) N/A 25.0
 
March 20, 2019, 5 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) 0.3 ppb (3) 42.0 μg/m3 (38) N/A 38.0
 
March 20, 2019, 4 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 13.0 ppb (10) 0.3 ppb (3) 46.0 μg/m3 (42) N/A 42.0
 
March 20, 2019, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 19.0 ppb (15) 0.4 ppb (4) 89.0 μg/m3 (67) N/A 67.0
 
March 20, 2019, 2 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) 0.3 ppb (3) 43.0 μg/m3 (39) N/A 39.0
 
March 20, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.3 ppb (3) 50.0 μg/m3 (45) N/A 45.0
 
March 20, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.2 ppb (2) 16.0 μg/m3 (15) N/A 38.0
 
March 19, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 49.0 ppb (38) 0.2 ppb (2) 22.0 μg/m3 (20) N/A 38.0
 
March 19, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) 0.2 ppb (2) 25.0 μg/m3 (23) N/A 39.0
 
March 19, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.2 ppb (2) 18.0 μg/m3 (16) N/A 44.0
 
March 19, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.3 ppb (3) 28.0 μg/m3 (25) N/A 42.0
 
March 19, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.3 ppb (3) 37.0 μg/m3 (34) N/A 38.0
 
March 19, 2019, 6 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 39.0 ppb (30) 0.3 ppb (3) 45.0 μg/m3 (41) N/A 41.0
 
March 19, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.3 ppb (3) 53.0 μg/m3 (48) N/A 48.0
 
March 19, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.3 ppb (3) 74.0 μg/m3 (60) N/A 60.0
 
March 19, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.3 ppb (3) 51.0 μg/m3 (46) N/A 46.0
 
March 19, 2019, 2 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.3 ppb (3) 52.0 μg/m3 (47) N/A 47.0
 
March 19, 2019, 1 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 1.0 ppb (1) 0.3 ppb (3) 64.0 μg/m3 (54) N/A 54.0
 
March 19, 2019, noon N/A N/A N/A 14.0 ppb (13) N/A N/A 8.0 ppb (6) 0.3 ppb (3) 43.0 μg/m3 (39) N/A 39.0
 
March 19, 2019, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) 0.3 ppb (3) 19.0 μg/m3 (17) N/A 17.0
 
March 19, 2019, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) 0.3 ppb (3) 20.0 μg/m3 (18) N/A 18.0
 
March 19, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) 0.3 ppb (3) 18.0 μg/m3 (16) N/A 16.0
 
March 19, 2019, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 7.0 ppb (5) 0.3 ppb (3) 25.0 μg/m3 (23) N/A 23.0
 
March 19, 2019, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.3 ppb (3) 28.0 μg/m3 (25) N/A 25.0
 
March 19, 2019, 6 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 5.0 ppb (4) 0.3 ppb (3) 24.0 μg/m3 (22) N/A 22.0
 
March 19, 2019, 5 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 8.0 ppb (6) 0.3 ppb (3) 12.0 μg/m3 (11) N/A 19.0
 
March 19, 2019, 4 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 16.0 μg/m3 (15) N/A 15.0
 
March 19, 2019, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 8.0 ppb (6) 0.3 ppb (3) 18.0 μg/m3 (16) N/A 19.0
 
March 19, 2019, 2 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 34.0 μg/m3 (31) N/A 31.0
 
March 19, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) 0.3 ppb (3) 26.0 μg/m3 (24) N/A 26.0
 
March 19, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.2 ppb (2) 18.0 μg/m3 (16) N/A 38.0
 
March 18, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.2 ppb (2) 20.0 μg/m3 (18) N/A 38.0
 
March 18, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.2 ppb (2) 23.0 μg/m3 (21) N/A 38.0
 
March 18, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.2 ppb (2) 15.0 μg/m3 (14) N/A 42.0
 
March 18, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) 0.2 ppb (2) 23.0 μg/m3 (21) N/A 42.0
 
March 18, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) 0.3 ppb (3) 48.0 μg/m3 (44) N/A 44.0
 
March 18, 2019, 6 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 43.0 ppb (33) 0.3 ppb (3) 45.0 μg/m3 (41) N/A 41.0
 
March 18, 2019, 5 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 37.0 ppb (28) 0.3 ppb (3) 33.0 μg/m3 (30) N/A 30.0
 
March 18, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.3 ppb (3) 38.0 μg/m3 (35) N/A 35.0
 
March 18, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.3 ppb (3) 38.0 μg/m3 (35) N/A 35.0
 
March 18, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.3 ppb (3) 31.0 μg/m3 (28) N/A 28.0
 
March 18, 2019, 1 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 29.0 μg/m3 (26) N/A 26.0
 
March 18, 2019, noon N/A N/A N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.3 ppb (3) 32.0 μg/m3 (29) N/A 29.0
 
March 18, 2019, 11 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 1.0 ppb (1) 0.3 ppb (3) 21.0 μg/m3 (19) N/A 19.0
 
March 18, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 4.0 ppb (3) 0.3 ppb (3) 22.0 μg/m3 (20) N/A 20.0
 
March 18, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) 0.3 ppb (3) 16.0 μg/m3 (15) N/A 15.0
 
March 18, 2019, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 9.0 ppb (7) 0.3 ppb (3) 15.0 μg/m3 (14) N/A 14.0
 
March 18, 2019, 7 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 8.0 ppb (6) 0.3 ppb (3) 24.0 μg/m3 (22) N/A 22.0
 
March 18, 2019, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.4 ppb (4) 29.0 μg/m3 (26) N/A 26.0
 
March 18, 2019, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) 0.4 ppb (4) 29.0 μg/m3 (26) N/A 26.0
 
March 18, 2019, 4 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 25.0 μg/m3 (23) N/A 23.0
 
March 18, 2019, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 17.0 ppb (13) 0.4 ppb (4) 27.0 μg/m3 (25) N/A 25.0
 
March 18, 2019, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.3 ppb (3) 22.0 μg/m3 (20) N/A 20.0