AQSQID: 060590007

Site Name: Anaheim

Location: Anaheim, CA

Reporting: True, Located: True

Current AQI: 34.0

Anaheim CA, US: 33.82, -117.913101

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2019, 7 p.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.16 ppb (2) 7.0 μg/m3 (6) 5.9 μg/m3 (25) 34.0
 
May 25, 2019, 6 p.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.17 ppb (2) 10.0 μg/m3 (9) 5.1 μg/m3 (21) 33.0
 
May 25, 2019, 5 p.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.18 ppb (2) 12.0 μg/m3 (11) 5.4 μg/m3 (23) 30.0
 
May 25, 2019, 4 p.m. 5.4 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.2 ppb (2) 14.0 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
May 25, 2019, 3 p.m. 6.8 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.21 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
May 25, 2019, 2 p.m. 8.0 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.23 ppb (3) 13.0 μg/m3 (12) 4.2 μg/m3 (18) 21.0
 
May 25, 2019, 1 p.m. 14.3 ppb (13) 2.7 ppb (3) N/A 12.0 ppb (11) N/A N/A 13.0 ppb (10) 0.29 ppb (3) 13.0 μg/m3 (12) 3.3 μg/m3 (14) 14.0
 
May 25, 2019, noon 17.6 ppb (16) 1.9 ppb (2) N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) 0.33 ppb (4) 19.0 μg/m3 (17) 2.3 μg/m3 (10) 17.0
 
May 25, 2019, 11 a.m. 11.4 ppb (11) 0.4 ppb (0) N/A 11.0 ppb (10) N/A N/A 9.0 ppb (7) 0.26 ppb (3) 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
May 25, 2019, 10 a.m. 14.5 ppb (13) 0.7 ppb (1) N/A 14.0 ppb (13) N/A N/A 8.0 ppb (6) 0.31 ppb (3) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
May 25, 2019, 9 a.m. 12.1 ppb (11) 0.2 ppb (0) N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) 0.29 ppb (3) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 8 a.m. 14.5 ppb (13) 0.3 ppb (0) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.3 ppb (3) 9.0 μg/m3 (8) 3.5 μg/m3 (15) 15.0
 
May 25, 2019, 7 a.m. 9.4 ppb (9) 0.1 ppb (0) N/A 9.0 ppb (8) N/A N/A 27.0 ppb (21) 0.23 ppb (3) 9.0 μg/m3 (8) 4.6 μg/m3 (19) 21.0
 
May 25, 2019, 6 a.m. 8.1 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.31 ppb (3) 8.0 μg/m3 (7) 4.3 μg/m3 (18) 22.0
 
May 25, 2019, 5 a.m. 6.7 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.22 ppb (2) 5.0 μg/m3 (5) 0.4 μg/m3 (2) 25.0
 
May 25, 2019, 4 a.m. 8.2 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.22 ppb (2) 15.0 μg/m3 (14) 0.5 μg/m3 (2) 23.0
 
May 25, 2019, 3 a.m. 8.3 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.21 ppb (2) 10.0 μg/m3 (9) 3.4 μg/m3 (14) 25.0
 
May 25, 2019, 2 a.m. 6.2 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) 0.19 ppb (2) 8.0 μg/m3 (7) 6.1 μg/m3 (25) 28.0
 
May 25, 2019, 1 a.m. 5.8 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) 0.22 ppb (2) 7.0 μg/m3 (6) 6.9 μg/m3 (29) 31.0
 
May 25, 2019, midnight 6.0 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.2 ppb (2) 10.0 μg/m3 (9) 7.6 μg/m3 (32) 32.0
 
May 24, 2019, 11 p.m. 5.8 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) 0.19 ppb (2) 16.0 μg/m3 (15) 7.1 μg/m3 (30) 34.0
 
May 24, 2019, 10 p.m. 7.0 ppb (6) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) 0.2 ppb (2) 17.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
May 24, 2019, 9 p.m. 6.9 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) 0.2 ppb (2) 27.0 μg/m3 (25) 10.6 μg/m3 (44) 44.0
 
May 24, 2019, 8 p.m. 13.0 ppb (12) 3.3 ppb (3) N/A 10.0 ppb (9) N/A N/A 40.0 ppb (31) 0.25 ppb (3) 33.0 μg/m3 (30) 9.3 μg/m3 (39) 39.0
 
May 24, 2019, 7 p.m. 17.1 ppb (16) 4.8 ppb (4) N/A 12.0 ppb (11) N/A N/A 36.0 ppb (28) 0.3 ppb (3) 29.0 μg/m3 (26) 14.9 μg/m3 (56) 56.0
 
May 24, 2019, 6 p.m. 12.6 ppb (12) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) 0.25 ppb (3) 18.0 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
May 24, 2019, 5 p.m. 13.1 ppb (12) 3.7 ppb (3) N/A 9.0 ppb (8) N/A N/A 34.0 ppb (26) 0.26 ppb (3) 23.0 μg/m3 (21) 10.4 μg/m3 (43) 43.0
 
May 24, 2019, 4 p.m. 13.1 ppb (12) 3.9 ppb (4) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.28 ppb (3) 22.0 μg/m3 (20) 10.7 μg/m3 (45) 45.0
 
May 24, 2019, 3 p.m. 26.0 ppb (24) 11.0 ppb (10) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.39 ppb (4) 31.0 μg/m3 (28) 17.6 μg/m3 (62) 62.0
 
May 24, 2019, 2 p.m. 43.2 ppb (40) 23.4 ppb (22) N/A 20.0 ppb (19) N/A N/A 7.0 ppb (5) 0.55 ppb (6) 35.0 μg/m3 (32) 16.4 μg/m3 (59) 59.0
 
May 24, 2019, 1 p.m. 57.5 ppb (54) 36.9 ppb (34) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 0.66 ppb (7) 38.0 μg/m3 (35) 19.3 μg/m3 (66) 66.0
 
May 24, 2019, noon 65.8 ppb (63) 45.3 ppb (42) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.59 ppb (7) 25.0 μg/m3 (23) 6.2 μg/m3 (26) 63.0
 
May 24, 2019, 11 a.m. 34.5 ppb (32) 13.9 ppb (13) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) 0.36 ppb (4) 18.0 μg/m3 (16) 8.7 μg/m3 (36) 36.0
 
May 24, 2019, 10 a.m. 30.1 ppb (28) 8.9 ppb (8) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) 0.32 ppb (4) 18.0 μg/m3 (16) 7.9 μg/m3 (33) 33.0
 
May 24, 2019, 9 a.m. 36.8 ppb (34) 14.4 ppb (13) N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) 0.46 ppb (5) 33.0 μg/m3 (30) 5.5 μg/m3 (23) 34.0
 
May 24, 2019, 8 a.m. 17.3 ppb (16) 1.5 ppb (1) N/A 16.0 ppb (15) N/A N/A 12.0 ppb (9) 0.3 ppb (3) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 7 a.m. 11.7 ppb (11) 0.1 ppb (0) N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.25 ppb (3) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 24.0
 
May 24, 2019, 6 a.m. 13.0 ppb (12) 0.2 ppb (0) N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.24 ppb (3) 22.0 μg/m3 (20) 3.7 μg/m3 (15) 20.0
 
May 24, 2019, 5 a.m. 7.4 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.23 ppb (3) 25.0 μg/m3 (23) 15.0 μg/m3 (56) 56.0
 
May 24, 2019, 4 a.m. 6.7 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.22 ppb (2) 18.0 μg/m3 (16) 3.9 μg/m3 (16) 22.0
 
May 24, 2019, 3 a.m. 5.4 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.21 ppb (2) 18.0 μg/m3 (16) N/A 25.0
 
May 24, 2019, 2 a.m. 3.2 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.18 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 28.0
 
May 24, 2019, 1 a.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.16 ppb (2) 16.0 μg/m3 (15) 7.8 μg/m3 (32) 32.0
 
May 24, 2019, midnight 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.16 ppb (2) 8.0 μg/m3 (7) 8.1 μg/m3 (34) 34.0
 
May 23, 2019, 11 p.m. 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.15 ppb (2) 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
May 23, 2019, 10 p.m. 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.15 ppb (2) 20.0 μg/m3 (18) 6.4 μg/m3 (27) 28.0
 
May 23, 2019, 9 p.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.15 ppb (2) 12.0 μg/m3 (11) 3.4 μg/m3 (14) 29.0
 
May 23, 2019, 8 p.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.17 ppb (2) 20.0 μg/m3 (18) 3.2 μg/m3 (13) 29.0
 
May 23, 2019, 7 p.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.16 ppb (2) 18.0 μg/m3 (16) 14.7 μg/m3 (56) 56.0
 
May 23, 2019, 6 p.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.15 ppb (2) 18.0 μg/m3 (16) 9.6 μg/m3 (40) 40.0
 
May 23, 2019, 5 p.m. 2.6 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.15 ppb (2) 20.0 μg/m3 (18) 9.1 μg/m3 (38) 38.0
 
May 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 8.8 μg/m3 (37) 37.0
 
May 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 10.5 μg/m3 (44) 44.0
 
May 23, 2019, 2 p.m. 8.6 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.25 ppb (3) 29.0 μg/m3 (26) 7.4 μg/m3 (31) 31.0
 
May 23, 2019, 1 p.m. 18.5 ppb (17) 1.6 ppb (1) N/A 17.0 ppb (16) N/A N/A 18.0 ppb (14) 0.36 ppb (4) 13.0 μg/m3 (12) 2.8 μg/m3 (12) 17.0
 
May 23, 2019, noon 18.6 ppb (17) 1.4 ppb (1) N/A 17.0 ppb (16) N/A N/A 17.0 ppb (13) 0.29 ppb (3) 12.0 μg/m3 (11) 3.2 μg/m3 (13) 17.0
 
May 23, 2019, 11 a.m. 13.5 ppb (12) 0.3 ppb (0) N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.25 ppb (3) 12.0 μg/m3 (11) 5.5 μg/m3 (23) 23.0
 
May 23, 2019, 10 a.m. 16.5 ppb (15) 0.4 ppb (0) N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) 0.28 ppb (3) 18.0 μg/m3 (16) 5.9 μg/m3 (25) 25.0
 
May 23, 2019, 9 a.m. 9.8 ppb (9) 0.1 ppb (0) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.22 ppb (2) 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
May 23, 2019, 8 a.m. 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 0.19 ppb (2) 13.0 μg/m3 (12) 1.6 μg/m3 (7) 18.0
 
May 23, 2019, 7 a.m. 7.9 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.24 ppb (3) 13.0 μg/m3 (12) 3.3 μg/m3 (14) 18.0
 
May 23, 2019, 6 a.m. 13.1 ppb (12) 0.2 ppb (0) N/A 13.0 ppb (12) N/A N/A 23.0 ppb (18) 0.31 ppb (3) 15.0 μg/m3 (14) 6.4 μg/m3 (27) 27.0
 
May 23, 2019, 5 a.m. 9.9 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) 0.27 ppb (3) 16.0 μg/m3 (15) 3.3 μg/m3 (14) 22.0
 
May 23, 2019, 4 a.m. 13.3 ppb (12) 0.1 ppb (0) N/A 13.0 ppb (12) N/A N/A 29.0 ppb (22) 0.29 ppb (3) 8.0 μg/m3 (7) 2.3 μg/m3 (10) 22.0
 
May 23, 2019, 3 a.m. 10.5 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 36.0 ppb (28) 0.26 ppb (3) 6.0 μg/m3 (5) 5.6 μg/m3 (23) 28.0
 
May 23, 2019, 2 a.m. 9.4 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 41.0 ppb (32) 0.25 ppb (3) 6.0 μg/m3 (5) 4.5 μg/m3 (19) 32.0
 
May 23, 2019, 1 a.m. 7.1 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.21 ppb (2) 9.0 μg/m3 (8) 1.1 μg/m3 (5) 32.0
 
May 23, 2019, midnight 8.3 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) 0.24 ppb (3) 7.0 μg/m3 (6) 0.1 μg/m3 (0) 34.0
 
May 22, 2019, 11 p.m. 8.7 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 44.0 ppb (34) 0.26 ppb (3) 5.0 μg/m3 (5) -1.1 μg/m3 (0) 34.0
 
May 22, 2019, 10 p.m. 9.0 ppb (8) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 44.0 ppb (34) 0.24 ppb (3) 20.0 μg/m3 (18) 0.1 μg/m3 (0) 34.0
 
May 22, 2019, 9 p.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.14 ppb (2) 7.0 μg/m3 (6) 2.2 μg/m3 (9) 35.0
 
May 22, 2019, 8 p.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) 0.14 ppb (2) 17.0 μg/m3 (15) 3.2 μg/m3 (13) 35.0
 
May 22, 2019, 7 p.m. 5.7 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) 0.16 ppb (2) 15.0 μg/m3 (14) 4.2 μg/m3 (18) 33.0
 
May 22, 2019, 6 p.m. 8.4 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.18 ppb (2) 19.0 μg/m3 (17) 2.7 μg/m3 (11) 29.0
 
May 22, 2019, 5 p.m. 9.2 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.19 ppb (2) 17.0 μg/m3 (15) 1.7 μg/m3 (7) 27.0
 
May 22, 2019, 4 p.m. 9.8 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.2 ppb (2) 22.0 μg/m3 (20) 4.9 μg/m3 (20) 25.0
 
May 22, 2019, 3 p.m. 10.2 ppb (9) 2.6 ppb (2) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.2 ppb (2) 21.0 μg/m3 (19) 7.1 μg/m3 (30) 30.0
 
May 22, 2019, 2 p.m. 10.7 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.21 ppb (2) 26.0 μg/m3 (24) 7.2 μg/m3 (30) 30.0
 
May 22, 2019, 1 p.m. 12.6 ppb (12) 1.5 ppb (1) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) 0.26 ppb (3) 29.0 μg/m3 (26) 6.9 μg/m3 (29) 29.0
 
May 22, 2019, noon 8.4 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.19 ppb (2) 28.0 μg/m3 (25) 6.4 μg/m3 (27) 27.0
 
May 22, 2019, 11 a.m. 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 20.0 μg/m3 (18) 4.8 μg/m3 (20) 24.0
 
May 22, 2019, 10 a.m. 2.8 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.13 ppb (1) 24.0 μg/m3 (22) 3.5 μg/m3 (15) 25.0
 
May 22, 2019, 9 a.m. 3.2 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.13 ppb (1) 22.0 μg/m3 (20) 3.8 μg/m3 (16) 25.0
 
May 22, 2019, 8 a.m. 4.3 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.14 ppb (2) 22.0 μg/m3 (20) 3.8 μg/m3 (16) 25.0
 
May 22, 2019, 7 a.m. 5.1 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.16 ppb (2) 28.0 μg/m3 (25) 5.5 μg/m3 (23) 25.0
 
May 22, 2019, 6 a.m. 5.8 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.17 ppb (2) 25.0 μg/m3 (23) 7.7 μg/m3 (32) 32.0
 
May 22, 2019, 5 a.m. 7.5 ppb (7) -0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.18 ppb (2) 29.0 μg/m3 (26) 7.7 μg/m3 (32) 32.0
 
May 22, 2019, 4 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.17 ppb (2) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 24.0
 
May 22, 2019, 3 a.m. 5.5 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.16 ppb (2) 24.0 μg/m3 (22) 3.5 μg/m3 (15) 25.0
 
May 22, 2019, 2 a.m. 5.4 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.17 ppb (2) 32.0 μg/m3 (29) 3.7 μg/m3 (15) 29.0
 
May 22, 2019, 1 a.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.14 ppb (2) 18.0 μg/m3 (16) 4.2 μg/m3 (18) 28.0
 
May 22, 2019, midnight 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.14 ppb (2) 13.0 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
May 21, 2019, 11 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.14 ppb (2) 25.0 μg/m3 (23) 8.1 μg/m3 (34) 34.0
 
May 21, 2019, 10 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.14 ppb (2) 29.0 μg/m3 (26) 5.9 μg/m3 (25) 33.0
 
May 21, 2019, 9 p.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.15 ppb (2) 32.0 μg/m3 (29) 3.4 μg/m3 (14) 32.0
 
May 21, 2019, 8 p.m. 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.15 ppb (2) 28.0 μg/m3 (25) 0.1 μg/m3 (0) 32.0
 
May 21, 2019, 7 p.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.14 ppb (2) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 34.0
 
May 21, 2019, 6 p.m. 3.1 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.14 ppb (2) 16.0 μg/m3 (15) 5.6 μg/m3 (23) 34.0
 
May 21, 2019, 5 p.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.13 ppb (1) 18.0 μg/m3 (16) 4.6 μg/m3 (19) 33.0
 
May 21, 2019, 4 p.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.14 ppb (2) 15.0 μg/m3 (14) 7.1 μg/m3 (30) 32.0
 
May 21, 2019, 3 p.m. 9.3 ppb (9) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.19 ppb (2) 17.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
May 21, 2019, 2 p.m. 8.4 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.21 ppb (2) 14.0 μg/m3 (13) 5.2 μg/m3 (22) 28.0
 
May 21, 2019, 1 p.m. 8.8 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) 0.2 ppb (2) 20.0 μg/m3 (18) 3.0 μg/m3 (12) 26.0
 
May 21, 2019, noon 9.3 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) 0.17 ppb (2) 7.0 μg/m3 (6) 2.3 μg/m3 (10) 27.0
 
May 21, 2019, 11 a.m. 5.3 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.16 ppb (2) 7.0 μg/m3 (6) 3.3 μg/m3 (14) 28.0
 
May 21, 2019, 10 a.m. 3.1 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.15 ppb (2) 15.0 μg/m3 (14) 6.5 μg/m3 (27) 30.0
 
May 21, 2019, 9 a.m. 2.3 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.14 ppb (2) 15.0 μg/m3 (14) 2.7 μg/m3 (11) 32.0
 
May 21, 2019, 8 a.m. 2.9 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 19.0 μg/m3 (17) 2.1 μg/m3 (9) 30.0
 
May 21, 2019, 7 a.m. 2.8 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.14 ppb (2) 17.0 μg/m3 (15) 2.8 μg/m3 (12) 32.0
 
May 21, 2019, 6 a.m. 3.3 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.16 ppb (2) 24.0 μg/m3 (22) 2.5 μg/m3 (10) 32.0
 
May 21, 2019, 5 a.m. 4.2 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.16 ppb (2) 18.0 μg/m3 (16) 3.2 μg/m3 (13) 32.0
 
May 21, 2019, 4 a.m. 5.9 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.18 ppb (2) 16.0 μg/m3 (15) 2.3 μg/m3 (10) 30.0
 
May 21, 2019, 3 a.m. 5.8 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.17 ppb (2) 8.0 μg/m3 (7) 2.3 μg/m3 (10) 30.0
 
May 21, 2019, 2 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.16 ppb (2) 8.0 μg/m3 (7) 0.8 μg/m3 (3) 34.0
 
May 21, 2019, 1 a.m. 3.6 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.15 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 37.0
 
May 21, 2019, midnight 4.2 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.15 ppb (2) 6.0 μg/m3 (5) 2.7 μg/m3 (11) 37.0
 
May 20, 2019, 11 p.m. 4.8 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.15 ppb (2) 16.0 μg/m3 (15) 0.3 μg/m3 (1) 37.0
 
May 20, 2019, 10 p.m. 4.5 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.15 ppb (2) 14.0 μg/m3 (13) -0.2 μg/m3 (0) 37.0
 
May 20, 2019, 9 p.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.14 ppb (2) 12.0 μg/m3 (11) -0.2 μg/m3 (0) 38.0
 
May 20, 2019, 8 p.m. 4.9 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) 0.14 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 39.0
 
May 20, 2019, 7 p.m. 6.5 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) 0.16 ppb (2) 15.0 μg/m3 (14) 0.8 μg/m3 (3) 38.0
 
May 20, 2019, 6 p.m. 6.9 ppb (6) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) 0.17 ppb (2) 9.0 μg/m3 (8) -0.7 μg/m3 (0) 35.0
 
May 20, 2019, 5 p.m. 5.7 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.17 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 35.0
 
May 20, 2019, 4 p.m. 10.5 ppb (10) 4.2 ppb (4) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.19 ppb (2) 12.0 μg/m3 (11) 4.4 μg/m3 (18) 32.0
 
May 20, 2019, 3 p.m. 5.0 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.18 ppb (2) 8.0 μg/m3 (7) 5.9 μg/m3 (25) 34.0
 
May 20, 2019, 2 p.m. 7.5 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.21 ppb (2) 8.0 μg/m3 (7) 4.9 μg/m3 (20) 30.0
 
May 20, 2019, 1 p.m. 8.6 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 35.0 ppb (27) 0.23 ppb (3) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 27.0
 
May 20, 2019, noon 6.7 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.27 ppb (3) 8.0 μg/m3 (7) 4.7 μg/m3 (20) 29.0
 
May 20, 2019, 11 a.m. 3.3 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) 0.17 ppb (2) 8.0 μg/m3 (7) 3.5 μg/m3 (15) 35.0
 
May 20, 2019, 10 a.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.15 ppb (2) 7.0 μg/m3 (6) 2.5 μg/m3 (10) 36.0
 
May 20, 2019, 9 a.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.15 ppb (2) 14.0 μg/m3 (13) 4.3 μg/m3 (18) 35.0
 
May 20, 2019, 8 a.m. 1.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.12 ppb (1) 9.0 μg/m3 (8) 4.3 μg/m3 (18) 36.0
 
May 20, 2019, 7 a.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.14 ppb (2) 10.0 μg/m3 (9) 2.8 μg/m3 (12) 35.0
 
May 20, 2019, 6 a.m. 1.9 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.13 ppb (1) 12.0 μg/m3 (11) 2.9 μg/m3 (12) 35.0
 
May 20, 2019, 5 a.m. 4.9 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) 0.15 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 32.0
 
May 20, 2019, 4 a.m. 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.15 ppb (2) 13.0 μg/m3 (12) 2.8 μg/m3 (12) 30.0
 
May 20, 2019, 3 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.16 ppb (2) 20.0 μg/m3 (18) 2.7 μg/m3 (11) 31.0
 
May 20, 2019, 2 a.m. 3.3 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.17 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 34.0
 
May 20, 2019, 1 a.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.14 ppb (2) 11.0 μg/m3 (10) 2.2 μg/m3 (9) 36.0
 
May 20, 2019, midnight 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.15 ppb (2) 7.0 μg/m3 (6) 0.5 μg/m3 (2) 36.0
 
May 19, 2019, 11 p.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.15 ppb (2) 2.0 μg/m3 (2) -1.4 μg/m3 (0) 37.0
 
May 19, 2019, 10 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.15 ppb (2) 2.0 μg/m3 (2) -0.4 μg/m3 (0) 36.0
 
May 19, 2019, 9 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.14 ppb (2) 1.0 μg/m3 (1) 1.7 μg/m3 (7) 35.0
 
May 19, 2019, 8 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.16 ppb (2) 2.0 μg/m3 (2) 4.7 μg/m3 (20) 32.0
 
May 19, 2019, 7 p.m. 5.5 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.2 ppb (2) 0.0 μg/m3 (0) 2.0 μg/m3 (8) 29.0
 
May 19, 2019, 6 p.m. 2.8 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.15 ppb (2) -1.0 μg/m3 (0) 0.1 μg/m3 (0) 32.0
 
May 19, 2019, 5 p.m. 3.1 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.15 ppb (2) 1.0 μg/m3 (1) 0.6 μg/m3 (2) 33.0
 
May 19, 2019, 4 p.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.14 ppb (2) 4.0 μg/m3 (4) -0.9 μg/m3 (0) 36.0
 
May 19, 2019, 3 p.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.15 ppb (2) 3.0 μg/m3 (3) 0.6 μg/m3 (2) 37.0
 
May 19, 2019, 2 p.m. 4.5 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (35) 0.16 ppb (2) 3.0 μg/m3 (3) 3.7 μg/m3 (15) 35.0
 
May 19, 2019, 1 p.m. 4.7 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) 0.16 ppb (2) 6.0 μg/m3 (5) 3.5 μg/m3 (15) 34.0
 
May 19, 2019, noon 5.5 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) 0.16 ppb (2) 6.0 μg/m3 (5) 2.8 μg/m3 (12) 28.0
 
May 19, 2019, 11 a.m. 5.0 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) 0.15 ppb (2) 8.0 μg/m3 (7) 3.5 μg/m3 (15) 31.0
 
May 19, 2019, 10 a.m. 3.0 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.14 ppb (2) 7.0 μg/m3 (6) 2.7 μg/m3 (11) 33.0
 
May 19, 2019, 9 a.m. 3.1 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.16 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 32.0
 
May 19, 2019, 8 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.13 ppb (1) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 30.0
 
May 19, 2019, 7 a.m. 5.1 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.16 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 27.0
 
May 19, 2019, 6 a.m. 6.0 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) 0.15 ppb (2) 14.0 μg/m3 (13) 8.7 μg/m3 (36) 36.0
 
May 19, 2019, 5 a.m. 6.4 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.2 ppb (2) 31.0 μg/m3 (28) 11.3 μg/m3 (47) 47.0
 
May 19, 2019, 4 a.m. 7.2 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) 0.21 ppb (2) 27.0 μg/m3 (25) 10.6 μg/m3 (44) 44.0
 
May 19, 2019, 3 a.m. 5.5 ppb (5) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (32) 0.17 ppb (2) 25.0 μg/m3 (23) 12.3 μg/m3 (51) 51.0
 
May 19, 2019, 2 a.m. 3.4 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.15 ppb (2) 21.0 μg/m3 (19) 8.1 μg/m3 (34) 34.0
 
May 19, 2019, 1 a.m. 4.8 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.15 ppb (2) 24.0 μg/m3 (22) 4.4 μg/m3 (18) 30.0
 
May 19, 2019, midnight 4.3 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.16 ppb (2) 19.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
May 18, 2019, 11 p.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) 0.16 ppb (2) 23.0 μg/m3 (21) 6.1 μg/m3 (25) 35.0
 
May 18, 2019, 10 p.m. 2.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.15 ppb (2) 13.0 μg/m3 (12) 4.9 μg/m3 (20) 39.0
 
May 18, 2019, 9 p.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) 0.15 ppb (2) 15.0 μg/m3 (14) 5.6 μg/m3 (23) 41.0
 
May 18, 2019, 8 p.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) 0.15 ppb (2) 22.0 μg/m3 (20) 4.4 μg/m3 (18) 40.0