ID: 168

AQSQID: 060590007

Site Name: Anaheim

Added: April 21, 2020, 6:24 p.m.

Updated: May 13, 2021, 11:47 a.m.

Location: Anaheim (Swest Anaheim), CA

Reporting: True, Located: True

Current AQI: 50.0

Anaheim (Swest Anaheim) CA, US: 33.830586, -117.938509

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 6, 2021, 10 a.m. 1.2 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.14 ppb (2) 20.2 μg/m3 (19) 9.5 μg/m3 (40) 40.0
 
May 6, 2021, 9 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) 0.15 ppb (2) 16.8 μg/m3 (16) 7.8 μg/m3 (33) 33.0
 
May 6, 2021, 8 a.m. 1.2 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.14 ppb (2) 19.5 μg/m3 (19) 10.3 μg/m3 (43) 43.0
 
May 6, 2021, 7 a.m. 1.2 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.13 ppb (2) 18.1 μg/m3 (17) 12.9 μg/m3 (53) 53.0
 
May 6, 2021, 6 a.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.14 ppb (2) 19.0 μg/m3 (18) 10.8 μg/m3 (46) 46.0
 
May 6, 2021, 5 a.m. 2.2 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.14 ppb (2) 22.5 μg/m3 (21) 7.3 μg/m3 (31) 31.0
 
May 6, 2021, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.15 ppb (2) 17.3 μg/m3 (17) 5.1 μg/m3 (22) 30.0
 
May 6, 2021, 3 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.14 ppb (2) 12.1 μg/m3 (12) 6.8 μg/m3 (29) 31.0
 
May 6, 2021, 2 a.m. 3.5 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.15 ppb (2) 12.7 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
May 6, 2021, 1 a.m. 7.4 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) 0.18 ppb (3) 25.4 μg/m3 (24) 12.2 μg/m3 (52) 52.0
 
May 6, 2021, midnight 9.2 ppb (9) 1.4 ppb (2) N/A 8.0 ppb (8) N/A N/A 39.0 ppb (37) 0.2 ppb (3) 32.4 μg/m3 (30) 12.7 μg/m3 (53) 53.0
 
May 5, 2021, 11 p.m. 8.4 ppb (8) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) 0.19 ppb (3) 32.7 μg/m3 (31) 18.5 μg/m3 (65) 65.0
 
May 5, 2021, 10 p.m. 8.1 ppb (8) 1.4 ppb (2) N/A 7.0 ppb (7) N/A N/A 47.0 ppb (44) 0.19 ppb (3) 31.2 μg/m3 (29) 20.7 μg/m3 (70) 70.0
 
May 5, 2021, 9 p.m. 3.5 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) 0.17 ppb (3) 23.4 μg/m3 (22) 11.4 μg/m3 (48) 48.0
 
May 5, 2021, 8 p.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) 0.16 ppb (3) 30.2 μg/m3 (28) 8.8 μg/m3 (37) 46.0
 
May 5, 2021, 7 p.m. 3.4 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) 0.18 ppb (3) 29.7 μg/m3 (28) 15.4 μg/m3 (58) 58.0
 
May 5, 2021, 6 p.m. 5.4 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (48) 0.22 ppb (3) 35.6 μg/m3 (33) 20.5 μg/m3 (69) 69.0
 
May 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 44.5 μg/m3 (42) 18.0 μg/m3 (64) 64.0
 
May 5, 2021, 4 p.m. 9.4 ppb (9) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.28 ppb (4) 40.4 μg/m3 (38) 24.9 μg/m3 (78) 78.0
 
May 5, 2021, 3 p.m. 12.2 ppb (12) 3.3 ppb (4) N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) 0.29 ppb (4) 33.6 μg/m3 (32) 22.2 μg/m3 (73) 73.0
 
May 5, 2021, 2 p.m. 15.5 ppb (15) 3.7 ppb (4) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) 0.34 ppb (4) 34.4 μg/m3 (32) 14.1 μg/m3 (56) 56.0
 
May 5, 2021, 1 p.m. 10.1 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) 0.25 ppb (3) 29.0 μg/m3 (27) 19.0 μg/m3 (66) 66.0
 
May 5, 2021, noon 6.0 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.2 ppb (3) 21.7 μg/m3 (21) 11.9 μg/m3 (50) 50.0
 
May 5, 2021, 11 a.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.16 ppb (3) 25.3 μg/m3 (24) 10.9 μg/m3 (46) 46.0
 
May 5, 2021, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) 0.15 ppb (2) 20.5 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
May 5, 2021, 9 a.m. 1.6 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.14 ppb (2) 26.0 μg/m3 (25) 10.3 μg/m3 (43) 43.0
 
May 5, 2021, 8 a.m. 1.6 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.14 ppb (2) 23.7 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
May 5, 2021, 7 a.m. 1.6 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.14 ppb (2) 27.3 μg/m3 (26) 10.5 μg/m3 (44) 44.0
 
May 5, 2021, 6 a.m. 2.2 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.14 ppb (2) 28.5 μg/m3 (27) 8.5 μg/m3 (36) 36.0
 
May 5, 2021, 5 a.m. 2.3 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.14 ppb (2) 31.5 μg/m3 (30) 9.0 μg/m3 (38) 38.0
 
May 5, 2021, 4 a.m. 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.15 ppb (2) 28.3 μg/m3 (27) 10.3 μg/m3 (43) 43.0
 
May 5, 2021, 3 a.m. 4.9 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.17 ppb (3) 26.6 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
May 5, 2021, 2 a.m. 5.2 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.17 ppb (3) 21.7 μg/m3 (21) 10.5 μg/m3 (44) 44.0
 
May 5, 2021, 1 a.m. 5.9 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.18 ppb (3) 26.4 μg/m3 (25) 10.3 μg/m3 (43) 43.0
 
May 5, 2021, midnight 7.3 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (43) 0.2 ppb (3) 27.8 μg/m3 (26) 7.8 μg/m3 (33) 43.0
 
May 4, 2021, 11 p.m. 8.8 ppb (9) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 52.0 ppb (49) 0.2 ppb (3) 28.3 μg/m3 (27) 17.5 μg/m3 (63) 63.0
 
May 4, 2021, 10 p.m. 7.9 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 58.0 ppb (61) 0.2 ppb (3) 35.8 μg/m3 (34) 14.6 μg/m3 (57) 61.0
 
May 4, 2021, 9 p.m. 4.7 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 58.0 ppb (61) 0.19 ppb (3) 30.4 μg/m3 (29) 15.6 μg/m3 (59) 61.0
 
May 4, 2021, 8 p.m. 4.0 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (50) 0.19 ppb (3) 30.7 μg/m3 (29) 15.1 μg/m3 (58) 58.0
 
May 4, 2021, 7 p.m. 4.3 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (50) 0.21 ppb (3) 41.6 μg/m3 (39) 15.6 μg/m3 (59) 59.0
 
May 4, 2021, 6 p.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.24 ppb (3) 36.1 μg/m3 (34) 19.8 μg/m3 (68) 68.0
 
May 4, 2021, 5 p.m. 7.2 ppb (7) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (38) 0.24 ppb (3) 37.4 μg/m3 (35) 19.7 μg/m3 (67) 67.0
 
May 4, 2021, 4 p.m. 7.9 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) 0.24 ppb (3) 36.7 μg/m3 (34) 12.2 μg/m3 (52) 52.0
 
May 4, 2021, 3 p.m. 12.1 ppb (12) 3.6 ppb (4) N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) 0.25 ppb (3) 40.3 μg/m3 (38) 18.0 μg/m3 (64) 64.0
 
May 4, 2021, 2 p.m. 13.5 ppb (13) 3.4 ppb (4) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) 0.27 ppb (4) 34.9 μg/m3 (33) 19.5 μg/m3 (67) 67.0
 
May 4, 2021, 1 p.m. 3.9 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.16 ppb (3) 26.1 μg/m3 (25) 9.3 μg/m3 (39) 39.0
 
May 4, 2021, noon 2.6 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) 0.14 ppb (2) 23.9 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
May 4, 2021, 11 a.m. 1.2 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.13 ppb (2) 23.5 μg/m3 (22) 8.5 μg/m3 (36) 36.0
 
May 4, 2021, 10 a.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.12 ppb (2) 26.6 μg/m3 (25) 10.5 μg/m3 (44) 44.0
 
May 4, 2021, 9 a.m. 1.2 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.13 ppb (2) 26.8 μg/m3 (25) 10.5 μg/m3 (44) 44.0
 
May 4, 2021, 8 a.m. 1.5 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) 0.13 ppb (2) 22.5 μg/m3 (21) 8.3 μg/m3 (35) 35.0
 
May 4, 2021, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.15 ppb (2) 26.1 μg/m3 (25) 8.0 μg/m3 (34) 34.0
 
May 4, 2021, 6 a.m. 3.4 ppb (4) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.15 ppb (2) 33.7 μg/m3 (32) 9.5 μg/m3 (40) 40.0
 
May 4, 2021, 5 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) 0.15 ppb (2) 30.5 μg/m3 (29) 10.3 μg/m3 (43) 43.0
 
May 4, 2021, 4 a.m. 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.15 ppb (2) 33.6 μg/m3 (32) 10.9 μg/m3 (46) 46.0
 
May 4, 2021, 3 a.m. 6.2 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.16 ppb (3) 29.3 μg/m3 (28) 14.6 μg/m3 (57) 57.0
 
May 4, 2021, 2 a.m. 7.5 ppb (8) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.17 ppb (3) 30.3 μg/m3 (29) 11.0 μg/m3 (46) 46.0
 
May 4, 2021, 1 a.m. 6.1 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) 0.19 ppb (3) 25.6 μg/m3 (24) 11.7 μg/m3 (49) 49.0
 
May 4, 2021, midnight 4.1 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.16 ppb (3) 25.1 μg/m3 (24) 10.8 μg/m3 (46) 46.0
 
May 3, 2021, 11 p.m. 4.6 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (45) 0.18 ppb (3) 34.4 μg/m3 (32) 11.9 μg/m3 (50) 50.0
 
May 3, 2021, 10 p.m. 5.0 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (50) 0.18 ppb (3) 35.6 μg/m3 (33) 12.9 μg/m3 (53) 53.0
 
May 3, 2021, 9 p.m. 6.3 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (43) 0.17 ppb (3) 42.3 μg/m3 (40) 11.7 μg/m3 (49) 49.0
 
May 3, 2021, 8 p.m. 5.6 ppb (6) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) 0.15 ppb (2) 29.2 μg/m3 (28) 11.7 μg/m3 (49) 49.0
 
May 3, 2021, 7 p.m. 8.5 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) 0.17 ppb (3) 34.3 μg/m3 (32) 11.0 μg/m3 (46) 46.0
 
May 3, 2021, 6 p.m. 10.2 ppb (10) 2.6 ppb (3) N/A 8.0 ppb (8) N/A N/A 38.0 ppb (36) 0.19 ppb (3) 30.4 μg/m3 (29) 10.5 μg/m3 (44) 44.0
 
May 3, 2021, 5 p.m. 5.8 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.18 ppb (3) 24.8 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
May 3, 2021, 4 p.m. 7.5 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.19 ppb (3) 29.7 μg/m3 (28) 14.6 μg/m3 (57) 57.0
 
May 3, 2021, 3 p.m. 7.8 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.19 ppb (3) 24.4 μg/m3 (23) 12.2 μg/m3 (52) 52.0
 
May 3, 2021, 2 p.m. 5.5 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.17 ppb (3) 20.2 μg/m3 (19) 10.3 μg/m3 (43) 43.0
 
May 3, 2021, 1 p.m. 3.3 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) 0.15 ppb (2) 18.1 μg/m3 (17) 7.5 μg/m3 (32) 32.0
 
May 3, 2021, noon 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.15 ppb (2) 21.0 μg/m3 (20) 6.1 μg/m3 (26) 30.0
 
May 3, 2021, 11 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 20.2 μg/m3 (19) 7.0 μg/m3 (30) 33.0
 
May 3, 2021, 10 a.m. 0.2 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) 0.11 ppb (2) 23.3 μg/m3 (22) 7.5 μg/m3 (32) 32.0
 
May 3, 2021, 9 a.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 13.4 μg/m3 (13) 5.1 μg/m3 (22) 33.0
 
May 3, 2021, 8 a.m. 0.1 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) 0.11 ppb (2) 10.5 μg/m3 (10) 6.1 μg/m3 (26) 34.0
 
May 3, 2021, 7 a.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 9.8 μg/m3 (10) 8.5 μg/m3 (36) 36.0
 
May 3, 2021, 6 a.m. 1.4 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.13 ppb (2) 10.8 μg/m3 (10) 6.5 μg/m3 (28) 31.0
 
May 3, 2021, 5 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.15 ppb (2) 23.0 μg/m3 (22) 6.6 μg/m3 (28) 28.0
 
May 3, 2021, 4 a.m. 2.4 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) 0.14 ppb (2) 16.3 μg/m3 (16) 6.8 μg/m3 (29) 29.0
 
May 3, 2021, 3 a.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.14 ppb (2) 4.2 μg/m3 (4) 3.6 μg/m3 (16) 30.0
 
May 3, 2021, 2 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.14 ppb (2) 6.6 μg/m3 (7) 2.7 μg/m3 (12) 31.0
 
May 3, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.12 ppb (2) 4.9 μg/m3 (5) 4.4 μg/m3 (19) 32.0
 
May 3, 2021, midnight 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 4.9 μg/m3 (5) 4.1 μg/m3 (18) 33.0
 
May 2, 2021, 11 p.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 6.9 μg/m3 (7) 3.6 μg/m3 (16) 33.0
 
May 2, 2021, 10 p.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 7.8 μg/m3 (8) 3.1 μg/m3 (13) 33.0
 
May 2, 2021, 9 p.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.12 ppb (2) 10.8 μg/m3 (10) 4.1 μg/m3 (18) 34.0
 
May 2, 2021, 8 p.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) 0.13 ppb (2) 11.0 μg/m3 (11) 4.4 μg/m3 (19) 37.0
 
May 2, 2021, 7 p.m. 1.3 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.13 ppb (2) 11.4 μg/m3 (11) 6.6 μg/m3 (28) 35.0
 
May 2, 2021, 6 p.m. 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.14 ppb (2) 12.4 μg/m3 (12) 7.1 μg/m3 (30) 35.0
 
May 2, 2021, 5 p.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.14 ppb (2) 21.4 μg/m3 (20) 5.1 μg/m3 (22) 35.0
 
May 2, 2021, 4 p.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.13 ppb (2) 22.2 μg/m3 (21) 7.8 μg/m3 (33) 33.0
 
May 2, 2021, 3 p.m. 1.6 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.14 ppb (2) 20.5 μg/m3 (19) 8.0 μg/m3 (34) 34.0
 
May 2, 2021, 2 p.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.13 ppb (2) 4.2 μg/m3 (4) 5.3 μg/m3 (23) 31.0
 
May 2, 2021, 1 p.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 14.6 μg/m3 (14) 5.1 μg/m3 (22) 33.0
 
May 2, 2021, noon 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.12 ppb (2) 18.8 μg/m3 (18) 5.3 μg/m3 (23) 34.0
 
May 2, 2021, 11 a.m. 0.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.11 ppb (2) 14.8 μg/m3 (14) 7.3 μg/m3 (31) 32.0
 
May 2, 2021, 10 a.m. 0.2 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) 0.11 ppb (2) 9.3 μg/m3 (9) 8.0 μg/m3 (34) 34.0
 
May 2, 2021, 9 a.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.12 ppb (2) 12.1 μg/m3 (12) 8.3 μg/m3 (35) 35.0
 
May 2, 2021, 8 a.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.12 ppb (2) 18.1 μg/m3 (17) 7.3 μg/m3 (31) 31.0
 
May 2, 2021, 7 a.m. 0.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.11 ppb (2) 19.0 μg/m3 (18) 3.4 μg/m3 (15) 32.0
 
May 2, 2021, 6 a.m. 0.4 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.11 ppb (2) 15.3 μg/m3 (15) 3.6 μg/m3 (16) 32.0
 
May 2, 2021, 5 a.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.12 ppb (2) 8.8 μg/m3 (9) 5.8 μg/m3 (25) 31.0
 
May 2, 2021, 4 a.m. 1.1 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.13 ppb (2) 15.5 μg/m3 (15) 6.8 μg/m3 (29) 31.0
 
May 2, 2021, 3 a.m. 1.5 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.13 ppb (2) 26.1 μg/m3 (25) 7.8 μg/m3 (33) 33.0
 
May 2, 2021, 2 a.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.14 ppb (2) 15.1 μg/m3 (14) 9.3 μg/m3 (39) 39.0
 
May 2, 2021, 1 a.m. 1.9 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) 0.14 ppb (2) 18.6 μg/m3 (18) 7.5 μg/m3 (32) 35.0
 
May 2, 2021, midnight 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.13 ppb (2) 17.5 μg/m3 (17) 6.6 μg/m3 (28) 36.0
 
May 1, 2021, 11 p.m. 1.0 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.12 ppb (2) 18.7 μg/m3 (18) 7.1 μg/m3 (30) 33.0
 
May 1, 2021, 10 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) 0.13 ppb (2) 13.8 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
May 1, 2021, 9 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.13 ppb (2) 18.9 μg/m3 (18) 6.6 μg/m3 (28) 34.0
 
May 1, 2021, 8 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.13 ppb (2) 20.2 μg/m3 (19) 8.0 μg/m3 (34) 34.0
 
May 1, 2021, 7 p.m. 2.1 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) 0.15 ppb (2) 28.5 μg/m3 (27) 11.4 μg/m3 (48) 48.0
 
May 1, 2021, 6 p.m. 3.4 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) 0.19 ppb (3) 28.8 μg/m3 (27) 14.4 μg/m3 (56) 56.0
 
May 1, 2021, 5 p.m. 4.5 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) 0.21 ppb (3) 28.7 μg/m3 (27) 19.5 μg/m3 (67) 67.0
 
May 1, 2021, 4 p.m. 5.1 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.2 ppb (3) 22.7 μg/m3 (22) 13.1 μg/m3 (54) 54.0
 
May 1, 2021, 3 p.m. 4.6 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.19 ppb (3) 22.5 μg/m3 (21) 16.1 μg/m3 (60) 60.0
 
May 1, 2021, 2 p.m. 3.4 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) 0.15 ppb (2) 22.5 μg/m3 (21) 15.3 μg/m3 (58) 58.0
 
May 1, 2021, 1 p.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) 0.11 ppb (2) 19.5 μg/m3 (19) 14.6 μg/m3 (57) 57.0
 
May 1, 2021, noon 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.12 ppb (2) 27.8 μg/m3 (26) 11.9 μg/m3 (50) 50.0
 
May 1, 2021, 11 a.m. 3.4 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) 0.13 ppb (2) 21.2 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
May 1, 2021, 10 a.m. 4.9 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.13 ppb (2) 20.2 μg/m3 (19) 8.8 μg/m3 (37) 37.0
 
May 1, 2021, 9 a.m. 6.0 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (22) 0.12 ppb (2) 23.2 μg/m3 (22) 9.5 μg/m3 (40) 40.0
 
May 1, 2021, 8 a.m. 10.5 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A N/A 19.0 ppb (18) 0.15 ppb (2) 29.6 μg/m3 (28) 7.5 μg/m3 (32) 32.0
 
May 1, 2021, 7 a.m. 9.3 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) 0.16 ppb (3) 29.3 μg/m3 (28) 14.8 μg/m3 (57) 57.0
 
May 1, 2021, 6 a.m. 13.2 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) 0.17 ppb (3) 29.3 μg/m3 (28) 12.4 μg/m3 (52) 52.0
 
May 1, 2021, 5 a.m. 21.1 ppb (20) 0.6 ppb (1) N/A 20.0 ppb (19) N/A N/A 11.0 ppb (11) 0.31 ppb (4) 42.6 μg/m3 (40) 17.6 μg/m3 (63) 63.0
 
May 1, 2021, 4 a.m. 22.4 ppb (22) 0.4 ppb (1) N/A 22.0 ppb (21) N/A N/A 19.0 ppb (18) 0.34 ppb (4) 41.6 μg/m3 (39) 11.9 μg/m3 (50) 50.0
 
May 1, 2021, 3 a.m. 17.0 ppb (17) 0.1 ppb (1) N/A 17.0 ppb (17) N/A N/A 34.0 ppb (32) 0.27 ppb (4) 31.9 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
May 1, 2021, 2 a.m. 15.9 ppb (15) 0.1 ppb (1) N/A 16.0 ppb (16) N/A N/A 40.0 ppb (38) 0.26 ppb (4) 35.1 μg/m3 (33) 12.4 μg/m3 (52) 52.0
 
May 1, 2021, 1 a.m. 15.7 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (15) N/A N/A 43.0 ppb (40) 0.24 ppb (3) 34.9 μg/m3 (33) 15.6 μg/m3 (59) 59.0
 
May 1, 2021, midnight 7.3 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 51.0 ppb (48) 0.18 ppb (3) 22.9 μg/m3 (22) 5.6 μg/m3 (24) 48.0
 
April 30, 2021, 11 p.m. 6.0 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (49) 0.17 ppb (3) 15.9 μg/m3 (15) 3.1 μg/m3 (13) 49.0
 
April 30, 2021, 10 p.m. 4.7 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (51) 0.16 ppb (3) 14.7 μg/m3 (14) 3.9 μg/m3 (17) 51.0
 
April 30, 2021, 9 p.m. 7.9 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 60.0 ppb (68) 0.2 ppb (3) 18.0 μg/m3 (17) 6.6 μg/m3 (28) 68.0
 
April 30, 2021, 8 p.m. 10.8 ppb (11) 1.8 ppb (2) N/A 9.0 ppb (9) N/A N/A 51.0 ppb (48) 0.18 ppb (3) 22.5 μg/m3 (21) 7.6 μg/m3 (32) 48.0
 
April 30, 2021, 7 p.m. 8.5 ppb (9) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 53.0 ppb (50) 0.19 ppb (3) 18.9 μg/m3 (18) 5.9 μg/m3 (25) 50.0
 
April 30, 2021, 6 p.m. 14.1 ppb (14) 2.1 ppb (2) N/A 12.0 ppb (12) N/A N/A 55.0 ppb (51) 0.33 ppb (4) 32.8 μg/m3 (31) 17.1 μg/m3 (62) 62.0
 
April 30, 2021, 5 p.m. 21.6 ppb (21) 4.3 ppb (5) N/A 17.0 ppb (17) N/A N/A 44.0 ppb (41) 0.41 ppb (5) 26.0 μg/m3 (25) 7.3 μg/m3 (31) 41.0
 
April 30, 2021, 4 p.m. 34.6 ppb (33) 9.6 ppb (10) N/A 25.0 ppb (24) N/A N/A 29.0 ppb (27) 0.53 ppb (6) 39.6 μg/m3 (37) 14.9 μg/m3 (57) 57.0
 
April 30, 2021, 3 p.m. 60.9 ppb (59) 23.8 ppb (23) N/A 37.0 ppb (35) N/A N/A 13.0 ppb (13) 0.71 ppb (8) 68.1 μg/m3 (58) 17.6 μg/m3 (63) 63.0
 
April 30, 2021, 2 p.m. 84.3 ppb (84) 46.3 ppb (44) N/A 38.0 ppb (36) N/A N/A 3.0 ppb (3) 0.81 ppb (10) 70.4 μg/m3 (59) 26.2 μg/m3 (81) 84.0
 
April 30, 2021, 1 p.m. 91.5 ppb (91) 58.1 ppb (56) N/A 33.0 ppb (32) N/A N/A 0.0 ppb (0) 0.95 ppb (11) 30.3 μg/m3 (29) 16.6 μg/m3 (61) 91.0
 
April 30, 2021, noon 65.9 ppb (64) 33.6 ppb (32) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) 0.7 ppb (8) 38.5 μg/m3 (36) 8.8 μg/m3 (37) 64.0
 
April 30, 2021, 11 a.m. 24.7 ppb (24) 1.1 ppb (2) N/A 24.0 ppb (23) N/A N/A 6.0 ppb (6) 0.41 ppb (5) 29.5 μg/m3 (28) 7.0 μg/m3 (30) 30.0
 
April 30, 2021, 10 a.m. 22.9 ppb (22) 1.0 ppb (1) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) 0.38 ppb (5) 24.6 μg/m3 (23) 15.6 μg/m3 (59) 59.0
 
April 30, 2021, 9 a.m. 14.9 ppb (15) 0.7 ppb (1) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.31 ppb (4) 20.5 μg/m3 (19) 16.3 μg/m3 (60) 60.0
 
April 30, 2021, 8 a.m. 15.6 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 19.0 ppb (18) 0.3 ppb (4) 32.7 μg/m3 (31) 15.6 μg/m3 (59) 59.0
 
April 30, 2021, 7 a.m. 22.9 ppb (22) 0.7 ppb (1) N/A 22.0 ppb (21) N/A N/A 15.0 ppb (14) 0.41 ppb (5) 36.1 μg/m3 (34) 21.2 μg/m3 (71) 71.0
 
April 30, 2021, 6 a.m. 24.9 ppb (24) 0.7 ppb (1) N/A 24.0 ppb (23) N/A N/A 16.0 ppb (15) 0.43 ppb (5) 36.1 μg/m3 (34) 11.4 μg/m3 (48) 48.0
 
April 30, 2021, 5 a.m. 15.5 ppb (15) 0.2 ppb (1) N/A 15.0 ppb (15) N/A N/A 29.0 ppb (27) 0.34 ppb (4) 14.1 μg/m3 (14) 9.3 μg/m3 (39) 39.0
 
April 30, 2021, 4 a.m. 12.3 ppb (12) 0.0 ppb (0) N/A 12.0 ppb (12) N/A N/A 37.0 ppb (35) 0.28 ppb (4) 15.1 μg/m3 (14) 8.0 μg/m3 (34) 35.0
 
April 30, 2021, 3 a.m. 11.5 ppb (11) 0.1 ppb (1) N/A 11.0 ppb (11) N/A N/A 41.0 ppb (38) 0.26 ppb (4) 15.8 μg/m3 (15) 4.1 μg/m3 (18) 38.0
 
April 30, 2021, 2 a.m. 10.7 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A 46.0 ppb (43) 0.26 ppb (4) 16.6 μg/m3 (16) 2.4 μg/m3 (10) 43.0
 
April 30, 2021, 1 a.m. 8.6 ppb (9) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 53.0 ppb (50) 0.23 ppb (3) 21.2 μg/m3 (20) 4.9 μg/m3 (21) 50.0
 
April 30, 2021, midnight 8.1 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 61.0 ppb (71) 0.23 ppb (3) 23.4 μg/m3 (22) 6.6 μg/m3 (28) 71.0
 
April 29, 2021, 11 p.m. 9.3 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (8) N/A N/A 65.0 ppb (84) 0.24 ppb (3) 31.4 μg/m3 (30) 9.5 μg/m3 (40) 84.0
 
April 29, 2021, 10 p.m. 17.5 ppb (17) 3.0 ppb (3) N/A 15.0 ppb (15) N/A N/A 49.0 ppb (46) 0.24 ppb (3) 38.9 μg/m3 (37) 12.6 μg/m3 (53) 53.0
 
April 29, 2021, 9 p.m. 19.2 ppb (19) 3.3 ppb (4) N/A 16.0 ppb (16) N/A N/A 50.0 ppb (47) 0.25 ppb (3) 32.4 μg/m3 (30) 8.5 μg/m3 (36) 47.0
 
April 29, 2021, 8 p.m. 13.7 ppb (13) 2.3 ppb (3) N/A 11.0 ppb (11) N/A N/A 53.0 ppb (50) 0.24 ppb (3) 28.4 μg/m3 (27) 8.3 μg/m3 (35) 50.0
 
April 29, 2021, 7 p.m. 11.3 ppb (11) 1.6 ppb (2) N/A 10.0 ppb (10) N/A N/A 58.0 ppb (61) 0.28 ppb (4) 35.3 μg/m3 (33) 10.3 μg/m3 (43) 61.0
 
April 29, 2021, 6 p.m. 13.7 ppb (13) 2.4 ppb (3) N/A 11.0 ppb (11) N/A N/A 50.0 ppb (47) 0.32 ppb (4) 33.8 μg/m3 (32) 7.1 μg/m3 (30) 47.0
 
April 29, 2021, 5 p.m. 18.1 ppb (18) 4.2 ppb (4) N/A 14.0 ppb (14) N/A N/A 38.0 ppb (36) 0.34 ppb (4) 32.9 μg/m3 (31) 10.3 μg/m3 (43) 43.0
 
April 29, 2021, 4 p.m. 30.8 ppb (30) 9.7 ppb (10) N/A 21.0 ppb (20) N/A N/A 24.0 ppb (23) 0.44 ppb (5) 38.2 μg/m3 (36) 13.9 μg/m3 (55) 55.0
 
April 29, 2021, 3 p.m. 40.2 ppb (38) 15.8 ppb (15) N/A 24.0 ppb (23) N/A N/A 15.0 ppb (14) 0.48 ppb (6) 41.1 μg/m3 (39) 16.8 μg/m3 (61) 61.0
 
April 29, 2021, 2 p.m. 70.3 ppb (69) 39.6 ppb (38) N/A 31.0 ppb (30) N/A N/A 3.0 ppb (3) 0.71 ppb (8) 48.5 μg/m3 (45) 17.1 μg/m3 (62) 69.0
 
April 29, 2021, 1 p.m. 68.9 ppb (67) 39.2 ppb (37) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) 0.72 ppb (8) 29.8 μg/m3 (28) 12.1 μg/m3 (51) 67.0
 
April 29, 2021, noon 72.4 ppb (71) 42.4 ppb (40) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) 0.72 ppb (8) 26.6 μg/m3 (25) 11.4 μg/m3 (48) 71.0
 
April 29, 2021, 11 a.m. 36.4 ppb (35) 9.1 ppb (9) N/A 27.0 ppb (26) N/A N/A 0.0 ppb (0) 0.37 ppb (5) 28.1 μg/m3 (27) 10.8 μg/m3 (46) 46.0