AQSQID: 060250005

Site Name: Calexico - Ethel Street

Location: Calexico, CA

Reporting: True, Located: True

Current AQI: 31.0

Calexico CA, US: 32.676102, -115.483299

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 26, 2019, 1 p.m. 1.4 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.08 ppb (1) N/A 1.0 μg/m3 (4) 31.0
 
May 26, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 4.0 μg/m3 (17) 17.0
 
May 26, 2019, 11 a.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) 0.09 ppb (1) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 32.0
 
May 26, 2019, 10 a.m. 1.1 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 33.0
 
May 26, 2019, 9 a.m. 1.5 ppb (1) -0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 32.0
 
May 26, 2019, 8 a.m. 2.0 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
May 26, 2019, 7 a.m. 2.9 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 34.0 μg/m3 (31) 8.0 μg/m3 (33) 33.0
 
May 26, 2019, 6 a.m. 2.8 ppb (3) -0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 46.0 μg/m3 (42) 8.0 μg/m3 (33) 42.0
 
May 26, 2019, 5 a.m. 2.9 ppb (3) -0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) 39.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
May 26, 2019, 4 a.m. 4.6 ppb (4) -0.4 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) 39.0 μg/m3 (35) 14.0 μg/m3 (54) 54.0
 
May 26, 2019, 3 a.m. 8.1 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) 43.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
May 26, 2019, 2 a.m. 7.1 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (37) 0.15 ppb (2) 35.0 μg/m3 (32) 3.0 μg/m3 (12) 37.0
 
May 26, 2019, 1 a.m. 5.5 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 52.0 ppb (40) 0.13 ppb (1) 41.0 μg/m3 (37) 5.0 μg/m3 (21) 40.0
 
May 26, 2019, midnight 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) 0.11 ppb (1) 55.0 μg/m3 (50) 7.0 μg/m3 (29) 50.0
 
May 25, 2019, 11 p.m. 3.4 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) 53.0 μg/m3 (48) 9.0 μg/m3 (38) 48.0
 
May 25, 2019, 10 p.m. 2.7 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 52.0 μg/m3 (47) 5.0 μg/m3 (21) 47.0
 
May 25, 2019, 9 p.m. 2.7 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 54.0 ppb (42) 0.11 ppb (1) 36.0 μg/m3 (33) 4.0 μg/m3 (17) 42.0
 
May 25, 2019, 8 p.m. 4.2 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 55.0 ppb (42) 0.13 ppb (1) 35.0 μg/m3 (32) 5.0 μg/m3 (21) 42.0
 
May 25, 2019, 7 p.m. 4.5 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 3.0 ppb (4) 55.0 ppb (42) 0.13 ppb (1) 35.0 μg/m3 (32) 6.0 μg/m3 (25) 42.0
 
May 25, 2019, 6 p.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 61.0 ppb (47) 0.17 ppb (2) 32.0 μg/m3 (29) 9.0 μg/m3 (38) 47.0
 
May 25, 2019, 5 p.m. 7.7 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 61.0 ppb (47) 0.22 ppb (2) 35.0 μg/m3 (32) 10.0 μg/m3 (42) 47.0
 
May 25, 2019, 4 p.m. 12.0 ppb (11) 1.6 ppb (1) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 50.0 ppb (38) 0.23 ppb (3) 37.0 μg/m3 (34) 15.0 μg/m3 (56) 56.0
 
May 25, 2019, 3 p.m. 16.5 ppb (15) 2.8 ppb (3) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 40.0 ppb (31) 0.28 ppb (3) 52.0 μg/m3 (47) 15.0 μg/m3 (56) 56.0
 
May 25, 2019, 2 p.m. 36.9 ppb (34) 11.1 ppb (10) N/A 26.0 ppb (24) N/A 1.0 ppb (1) 21.0 ppb (16) 0.49 ppb (5) 103.0 μg/m3 (74) 31.0 μg/m3 (90) 90.0
 
May 25, 2019, 1 p.m. 14.4 ppb (13) 2.4 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 25.0 ppb (19) 0.23 ppb (3) 53.0 μg/m3 (48) 12.0 μg/m3 (50) 50.0
 
May 25, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (33) 8.0 μg/m3 (33) 33.0
 
May 25, 2019, 11 a.m. 3.7 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
May 25, 2019, 10 a.m. 3.2 ppb (3) -0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 35.0
 
May 25, 2019, 9 a.m. 4.0 ppb (4) -0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
May 25, 2019, 8 a.m. 5.5 ppb (5) -0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) 27.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
May 25, 2019, 7 a.m. 14.4 ppb (13) 0.7 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) 0.24 ppb (3) 50.0 μg/m3 (45) 11.0 μg/m3 (46) 46.0
 
May 25, 2019, 6 a.m. 11.5 ppb (11) 0.3 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 34.0 ppb (26) 0.21 ppb (2) 43.0 μg/m3 (39) 9.0 μg/m3 (38) 39.0
 
May 25, 2019, 5 a.m. 13.7 ppb (13) 0.2 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 36.0 ppb (28) 0.24 ppb (3) 55.0 μg/m3 (50) 9.0 μg/m3 (38) 50.0
 
May 25, 2019, 4 a.m. 18.3 ppb (17) 0.8 ppb (1) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 27.0 ppb (21) 0.3 ppb (3) 44.0 μg/m3 (40) 8.0 μg/m3 (33) 40.0
 
May 25, 2019, 3 a.m. 8.1 ppb (8) -0.3 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 36.0 μg/m3 (33) 8.0 μg/m3 (33) 34.0
 
May 25, 2019, 2 a.m. 3.5 ppb (3) -0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 58.0 ppb (45) 0.13 ppb (1) 27.0 μg/m3 (25) 7.0 μg/m3 (29) 45.0
 
May 25, 2019, 1 a.m. 3.1 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 64.0 ppb (49) 0.12 ppb (1) 32.0 μg/m3 (29) 7.0 μg/m3 (29) 49.0
 
May 25, 2019, midnight 3.9 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 68.0 ppb (52) 0.14 ppb (2) 31.0 μg/m3 (28) 4.0 μg/m3 (17) 52.0
 
May 24, 2019, 11 p.m. 2.9 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 64.0 ppb (49) 0.12 ppb (1) 29.0 μg/m3 (26) 5.0 μg/m3 (21) 49.0
 
May 24, 2019, 10 p.m. 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 58.0 ppb (45) 0.14 ppb (2) 33.0 μg/m3 (30) 6.0 μg/m3 (25) 45.0
 
May 24, 2019, 9 p.m. 4.1 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 58.0 ppb (45) 0.14 ppb (2) 31.0 μg/m3 (28) 7.0 μg/m3 (29) 45.0
 
May 24, 2019, 8 p.m. 3.9 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) 0.13 ppb (1) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 42.0
 
May 24, 2019, 7 p.m. 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.13 ppb (1) N/A N/A 38.0
 
May 24, 2019, 6 p.m. 2.4 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 37.0
 
May 24, 2019, 5 p.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.11 ppb (1) 18.0 μg/m3 (16) 7.0 μg/m3 (29) 35.0
 
May 24, 2019, 4 p.m. 3.4 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 32.0
 
May 24, 2019, 3 p.m. 4.0 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) 54.0 μg/m3 (49) 8.0 μg/m3 (33) 49.0
 
May 24, 2019, 2 p.m. 7.9 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) 28.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
May 24, 2019, 1 p.m. 20.0 ppb (19) 4.1 ppb (4) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 17.0 ppb (13) 0.31 ppb (3) 36.0 μg/m3 (33) 7.0 μg/m3 (29) 33.0
 
May 24, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 11 a.m. 7.8 ppb (7) -0.1 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) 23.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 10 a.m. 4.9 ppb (5) -0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 21.0
 
May 24, 2019, 9 a.m. 2.8 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 25.0
 
May 24, 2019, 8 a.m. 4.5 ppb (4) -0.3 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) 0.11 ppb (1) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 22.0
 
May 24, 2019, 7 a.m. 4.0 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 6 a.m. 3.6 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 26.0
 
May 24, 2019, 5 a.m. 2.1 ppb (2) -0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) 23.0 μg/m3 (21) 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 4 a.m. 2.4 ppb (2) -0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) 26.0 μg/m3 (24) 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 3 a.m. 2.5 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) 31.0 μg/m3 (28) 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 2 a.m. 2.3 ppb (2) -0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) 31.0 μg/m3 (28) 5.0 μg/m3 (21) 34.0
 
May 24, 2019, 1 a.m. 1.6 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 37.0
 
May 24, 2019, midnight 1.5 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) 24.0 μg/m3 (22) 5.0 μg/m3 (21) 36.0
 
May 23, 2019, 11 p.m. 1.2 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 61.0 μg/m3 (53) 3.0 μg/m3 (12) 53.0
 
May 23, 2019, 10 p.m. 1.5 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 38.0
 
May 23, 2019, 9 p.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 38.0
 
May 23, 2019, 8 p.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 37.0
 
May 23, 2019, 7 p.m. 0.9 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 37.0
 
May 23, 2019, 6 p.m. 1.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) 9.0 μg/m3 (8) 6.0 μg/m3 (25) 36.0
 
May 23, 2019, 5 p.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 46.0 ppb (35) 0.11 ppb (1) 25.0 μg/m3 (23) 8.0 μg/m3 (33) 35.0
 
May 23, 2019, 4 p.m. 8.7 ppb (8) 2.2 ppb (2) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 42.0 ppb (32) 0.15 ppb (2) 26.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 3 p.m. 27.4 ppb (25) 10.2 ppb (9) N/A 17.0 ppb (16) N/A 1.0 ppb (1) 29.0 ppb (22) 0.28 ppb (3) 47.0 μg/m3 (43) 8.0 μg/m3 (33) 43.0
 
May 23, 2019, 2 p.m. 4.3 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 22.0 μg/m3 (20) 5.0 μg/m3 (21) 31.0
 
May 23, 2019, 1 p.m. 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) 27.0 μg/m3 (25) 7.0 μg/m3 (29) 30.0
 
May 23, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
May 23, 2019, 11 a.m. 3.6 ppb (3) -0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 29.0
 
May 23, 2019, 10 a.m. 2.5 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 32.0
 
May 23, 2019, 9 a.m. 1.6 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.09 ppb (1) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 34.0
 
May 23, 2019, 8 a.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) 0.09 ppb (1) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 36.0
 
May 23, 2019, 7 a.m. 1.0 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.09 ppb (1) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 35.0
 
May 23, 2019, 6 a.m. 1.8 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.09 ppb (1) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 31.0
 
May 23, 2019, 5 a.m. 1.2 ppb (1) -0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.09 ppb (1) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
May 23, 2019, 4 a.m. 2.4 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.09 ppb (1) 25.0 μg/m3 (23) 4.0 μg/m3 (17) 31.0
 
May 23, 2019, 3 a.m. 2.4 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.09 ppb (1) 22.0 μg/m3 (20) 5.0 μg/m3 (21) 32.0
 
May 23, 2019, 2 a.m. 1.3 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 35.0
 
May 23, 2019, 1 a.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.09 ppb (1) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 38.0
 
May 23, 2019, midnight 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) 0.09 ppb (1) 51.0 μg/m3 (46) 6.0 μg/m3 (25) 46.0
 
May 22, 2019, 11 p.m. 1.5 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) 0.1 ppb (1) 38.0 μg/m3 (35) 6.0 μg/m3 (25) 42.0
 
May 22, 2019, 10 p.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) 0.1 ppb (1) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 42.0
 
May 22, 2019, 9 p.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) 0.09 ppb (1) 47.0 μg/m3 (43) 3.0 μg/m3 (12) 43.0
 
May 22, 2019, 8 p.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.09 ppb (1) 107.0 μg/m3 (76) 4.0 μg/m3 (17) 76.0
 
May 22, 2019, 7 p.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) 0.09 ppb (1) 43.0 μg/m3 (39) 5.0 μg/m3 (21) 39.0
 
May 22, 2019, 6 p.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 36.0 μg/m3 (33) 4.0 μg/m3 (17) 37.0
 
May 22, 2019, 5 p.m. 1.4 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) 0.09 ppb (1) 75.0 μg/m3 (60) 3.0 μg/m3 (12) 60.0
 
May 22, 2019, 4 p.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 34.0 μg/m3 (31) 3.0 μg/m3 (12) 37.0
 
May 22, 2019, 3 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) 38.0 μg/m3 (35) 4.0 μg/m3 (17) 35.0
 
May 22, 2019, 2 p.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 32.0 μg/m3 (29) 5.0 μg/m3 (21) 37.0
 
May 22, 2019, 1 p.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.08 ppb (1) 26.0 μg/m3 (24) 4.0 μg/m3 (17) 36.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
May 22, 2019, 11 a.m. 0.7 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.09 ppb (1) 28.0 μg/m3 (25) 3.0 μg/m3 (12) 35.0
 
May 22, 2019, 10 a.m. 1.0 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.09 ppb (1) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 34.0
 
May 22, 2019, 9 a.m. 0.9 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 35.0
 
May 22, 2019, 8 a.m. 0.8 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.08 ppb (1) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 35.0
 
May 22, 2019, 7 a.m. 0.8 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.08 ppb (1) 124.0 μg/m3 (84) 6.0 μg/m3 (25) 84.0
 
May 22, 2019, 6 a.m. 1.2 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.09 ppb (1) 20.0 μg/m3 (18) 5.0 μg/m3 (21) 35.0
 
May 22, 2019, 5 a.m. 1.3 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) 54.0 μg/m3 (49) 8.0 μg/m3 (33) 49.0
 
May 22, 2019, 4 a.m. 1.7 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) 50.0 μg/m3 (45) 8.0 μg/m3 (33) 45.0
 
May 22, 2019, 3 a.m. 1.4 ppb (1) -0.7 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) 67.0 μg/m3 (56) 7.0 μg/m3 (29) 56.0
 
May 22, 2019, 2 a.m. 2.4 ppb (2) -0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 130.0 μg/m3 (88) 10.0 μg/m3 (42) 88.0
 
May 22, 2019, 1 a.m. 2.3 ppb (2) -0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 151.0 μg/m3 (98) 15.0 μg/m3 (56) 98.0
 
May 22, 2019, midnight 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) 0.11 ppb (1) 128.0 μg/m3 (86) 10.0 μg/m3 (42) 86.0
 
May 21, 2019, 11 p.m. 1.7 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 246.0 μg/m3 (146) 22.0 μg/m3 (71) 146.0
 
May 21, 2019, 10 p.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 387.0 μg/m3 (246) 32.0 μg/m3 (93) 246.0
 
May 21, 2019, 9 p.m. 1.7 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 57.0 ppb (44) 0.1 ppb (1) 199.0 μg/m3 (122) 18.0 μg/m3 (63) 122.0
 
May 21, 2019, 8 p.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 58.0 ppb (45) 0.1 ppb (1) 79.0 μg/m3 (62) 6.0 μg/m3 (25) 62.0
 
May 21, 2019, 7 p.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 57.0 ppb (44) 0.1 ppb (1) 99.0 μg/m3 (72) 16.0 μg/m3 (59) 72.0
 
May 21, 2019, 6 p.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) 30.0 μg/m3 (27) 7.0 μg/m3 (29) 43.0
 
May 21, 2019, 5 p.m. 1.5 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 41.0
 
May 21, 2019, 4 p.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 41.0
 
May 21, 2019, 3 p.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 40.0
 
May 21, 2019, 2 p.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 40.0
 
May 21, 2019, 1 p.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.09 ppb (1) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 38.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 8.0
 
May 21, 2019, 11 a.m. 2.0 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 38.0
 
May 21, 2019, 10 a.m. 2.0 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 35.0
 
May 21, 2019, 9 a.m. 1.4 ppb (1) -0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 37.0
 
May 21, 2019, 8 a.m. 1.1 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.09 ppb (1) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 38.0
 
May 21, 2019, 7 a.m. 1.5 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 38.0
 
May 21, 2019, 6 a.m. 1.8 ppb (2) -0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 38.0
 
May 21, 2019, 5 a.m. 2.4 ppb (2) -0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.11 ppb (1) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 38.0
 
May 21, 2019, 4 a.m. 3.0 ppb (3) -0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.11 ppb (1) 31.0 μg/m3 (28) 5.0 μg/m3 (21) 38.0
 
May 21, 2019, 3 a.m. 2.9 ppb (3) -0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 52.0 ppb (40) 0.11 ppb (1) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 40.0
 
May 21, 2019, 2 a.m. 3.0 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.11 ppb (1) 21.0 μg/m3 (19) 5.0 μg/m3 (21) 42.0
 
May 21, 2019, 1 a.m. 1.8 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 59.0 ppb (45) 0.1 ppb (1) 22.0 μg/m3 (20) 4.0 μg/m3 (17) 45.0
 
May 21, 2019, midnight 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 60.0 ppb (46) 0.1 ppb (1) 20.0 μg/m3 (18) 5.0 μg/m3 (21) 46.0
 
May 20, 2019, 11 p.m. 1.3 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 59.0 ppb (45) 0.1 ppb (1) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 45.0
 
May 20, 2019, 10 p.m. 1.6 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 43.0
 
May 20, 2019, 9 p.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 43.0
 
May 20, 2019, 8 p.m. 1.3 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 17.0 μg/m3 (15) 1.0 μg/m3 (4) 42.0
 
May 20, 2019, 7 p.m. 1.4 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 20.0 μg/m3 (18) 3.0 μg/m3 (12) 41.0
 
May 20, 2019, 6 p.m. 1.2 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 41.0
 
May 20, 2019, 5 p.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 169.0 μg/m3 (107) 4.0 μg/m3 (17) 107.0
 
May 20, 2019, 4 p.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) 34.0 μg/m3 (31) 5.0 μg/m3 (21) 40.0
 
May 20, 2019, 3 p.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) 0.1 ppb (1) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 39.0
 
May 20, 2019, 2 p.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 38.0
 
May 20, 2019, 1 p.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) 0.09 ppb (1) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 39.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 8.0
 
May 20, 2019, 11 a.m. 0.9 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 16.0 μg/m3 (15) 2.0 μg/m3 (8) 42.0
 
May 20, 2019, 10 a.m. 0.7 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 41.0
 
May 20, 2019, 9 a.m. 0.7 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.09 ppb (1) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 38.0
 
May 20, 2019, 8 a.m. 1.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 38.0
 
May 20, 2019, 7 a.m. 1.0 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) 0.09 ppb (1) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 38.0
 
May 20, 2019, 6 a.m. 1.3 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) 0.09 ppb (1) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 39.0
 
May 20, 2019, 5 a.m. 1.2 ppb (1) -0.7 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) 0.09 ppb (1) 56.0 μg/m3 (50) 10.0 μg/m3 (42) 50.0
 
May 20, 2019, 4 a.m. 1.6 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) 31.0 μg/m3 (28) 8.0 μg/m3 (33) 40.0
 
May 20, 2019, 3 a.m. 1.4 ppb (1) -0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 42.0 μg/m3 (38) 7.0 μg/m3 (29) 41.0
 
May 20, 2019, 2 a.m. 1.1 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) 0.1 ppb (1) 50.0 μg/m3 (45) 8.0 μg/m3 (33) 45.0
 
May 20, 2019, 1 a.m. 1.0 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) 0.09 ppb (1) 110.0 μg/m3 (78) 15.0 μg/m3 (56) 78.0
 
May 20, 2019, midnight 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) 192.0 μg/m3 (118) 5.0 μg/m3 (21) 118.0
 
May 19, 2019, 11 p.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 47.0 μg/m3 (43) 7.0 μg/m3 (29) 43.0
 
May 19, 2019, 10 p.m. 1.0 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) 98.0 μg/m3 (72) 10.0 μg/m3 (42) 72.0
 
May 19, 2019, 9 p.m. 1.2 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 33.0 μg/m3 (30) 7.0 μg/m3 (29) 33.0
 
May 19, 2019, 8 p.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.09 ppb (1) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 35.0
 
May 19, 2019, 7 p.m. 1.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.09 ppb (1) 31.0 μg/m3 (28) 4.0 μg/m3 (17) 35.0
 
May 19, 2019, 6 p.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 45.0 μg/m3 (41) 4.0 μg/m3 (17) 41.0
 
May 19, 2019, 5 p.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 27.0 μg/m3 (25) 5.0 μg/m3 (21) 37.0
 
May 19, 2019, 4 p.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.08 ppb (1) 44.0 μg/m3 (40) 4.0 μg/m3 (17) 40.0
 
May 19, 2019, 3 p.m. 1.3 ppb (1) -0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 37.0
 
May 19, 2019, 2 p.m. 1.2 ppb (1) -0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) 20.0 μg/m3 (18) 8.0 μg/m3 (33) 37.0