ID: 2215

AQSQID: 295100094

Site Name: Forest Park

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

Updated: July 2, 2022, 1:56 a.m.

Location: Saint Louis (Forest Park), MO

Reporting: True, Located: True

Current AQI: 48.0

Saint Louis (Forest Park) MO, US: 38.631057, -90.281144

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 2, 2022, midnight 1.5 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
July 1, 2022, 11 p.m. 1.1 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 14.1 μg/m3 (56) 56.0
 
July 1, 2022, 10 p.m. 3.0 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.26 ppb (4) N/A 17.1 μg/m3 (62) 62.0
 
July 1, 2022, 9 p.m. 4.7 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 16.3 μg/m3 (60) 60.0
 
July 1, 2022, 9 p.m. 4.7 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 16.3 μg/m3 (60) 60.0
 
July 1, 2022, 8 p.m. 5.4 ppb (6) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.26 ppb (4) N/A 18.5 μg/m3 (65) 65.0
 
July 1, 2022, 8 p.m. 5.4 ppb (6) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.26 ppb (4) N/A 18.5 μg/m3 (65) 65.0
 
July 1, 2022, 7 p.m. 6.3 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) N/A 13.3 μg/m3 (54) 54.0
 
July 1, 2022, 7 p.m. 6.3 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) N/A 13.3 μg/m3 (54) 54.0
 
July 1, 2022, 6 p.m. 3.1 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 23.1 μg/m3 (75) 75.0
 
July 1, 2022, 6 p.m. 3.1 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 23.1 μg/m3 (75) 75.0
 
July 1, 2022, 5 p.m. 5.6 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.27 ppb (4) N/A 8.4 μg/m3 (36) 36.0
 
July 1, 2022, 4 p.m. 7.8 ppb (8) 2.6 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) N/A 17.4 μg/m3 (63) 63.0
 
July 1, 2022, 3 p.m. 9.7 ppb (10) 3.4 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.29 ppb (4) N/A 9.1 μg/m3 (38) 38.0
 
July 1, 2022, 2 p.m. 10.0 ppb (10) 2.9 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.29 ppb (4) N/A 14.2 μg/m3 (56) 56.0
 
July 1, 2022, 1 p.m. 13.4 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 12.2 μg/m3 (52) 52.0
 
July 1, 2022, noon 13.8 ppb (14) 3.6 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.36 ppb (5) N/A 14.3 μg/m3 (56) 56.0
 
July 1, 2022, 11 a.m. 18.6 ppb (18) 4.6 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.34 ppb (4) N/A 9.8 μg/m3 (41) 41.0
 
July 1, 2022, 10 a.m. 10.2 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
July 1, 2022, 9 a.m. 4.7 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) N/A 9.2 μg/m3 (39) 39.0
 
July 1, 2022, 5 a.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.28 ppb (4) N/A 13.4 μg/m3 (54) 54.0
 
July 1, 2022, 4 a.m. 8.5 ppb (9) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 12.7 μg/m3 (53) 53.0
 
July 1, 2022, 3 a.m. 9.6 ppb (10) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 1, 2022, 2 a.m. 11.4 ppb (11) 1.8 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 14.2 μg/m3 (56) 56.0
 
July 1, 2022, 2 a.m. 11.4 ppb (11) 1.8 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 14.2 μg/m3 (56) 56.0
 
July 1, 2022, 1 a.m. 11.6 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 13.3 μg/m3 (54) 54.0
 
July 1, 2022, 1 a.m. 11.6 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 13.3 μg/m3 (54) 54.0
 
July 1, 2022, midnight 6.6 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 30, 2022, 10 p.m. 6.5 ppb (7) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) N/A 7.3 μg/m3 (31) 31.0
 
June 30, 2022, 9 p.m. 7.6 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (4) N/A 11.5 μg/m3 (48) 48.0
 
June 30, 2022, 9 p.m. 7.6 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (4) N/A 11.5 μg/m3 (48) 48.0
 
June 30, 2022, 9 p.m. 7.6 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (4) N/A 11.5 μg/m3 (48) 48.0
 
June 30, 2022, 7 p.m. 11.8 ppb (12) 3.6 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 11.8 μg/m3 (50) 50.0
 
June 30, 2022, 3 p.m. 11.0 ppb (11) 2.6 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.26 ppb (4) N/A 8.1 μg/m3 (34) 34.0
 
June 30, 2022, 8 a.m. 13.9 ppb (14) 0.4 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.24 ppb (3) N/A 12.9 μg/m3 (53) 53.0
 
June 30, 2022, 8 a.m. 13.9 ppb (14) 0.4 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.24 ppb (3) N/A 12.9 μg/m3 (53) 53.0
 
June 30, 2022, 8 a.m. 13.9 ppb (14) 0.4 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.24 ppb (3) N/A 12.9 μg/m3 (53) 53.0
 
June 30, 2022, 6 a.m. 15.0 ppb (15) 1.2 ppb (2) N/A 14.0 ppb (14) N/A N/A N/A 0.23 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
June 30, 2022, 6 a.m. 15.0 ppb (15) 1.2 ppb (2) N/A 14.0 ppb (14) N/A N/A N/A 0.23 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
June 30, 2022, 5 a.m. 9.6 ppb (10) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.21 ppb (3) N/A 12.3 μg/m3 (52) 52.0
 
June 30, 2022, 5 a.m. 9.6 ppb (10) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.21 ppb (3) N/A 12.3 μg/m3 (52) 52.0
 
June 30, 2022, 4 a.m. 11.9 ppb (12) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 9.7 μg/m3 (41) 41.0
 
June 30, 2022, 4 a.m. 11.9 ppb (12) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 9.7 μg/m3 (41) 41.0
 
June 30, 2022, 4 a.m. 11.9 ppb (12) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 9.7 μg/m3 (41) 41.0
 
June 30, 2022, 2 a.m. 18.4 ppb (18) 1.6 ppb (2) N/A 17.0 ppb (17) N/A N/A N/A 0.36 ppb (5) N/A 12.8 μg/m3 (53) 53.0
 
June 30, 2022, 1 a.m. 11.7 ppb (12) 1.4 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A 9.7 μg/m3 (41) 41.0
 
June 30, 2022, midnight 9.5 ppb (9) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 12.3 μg/m3 (52) 52.0
 
June 29, 2022, 11 p.m. 9.5 ppb (9) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
June 29, 2022, 11 p.m. 9.5 ppb (9) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
June 29, 2022, 10 p.m. 9.7 ppb (10) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.3 ppb (4) N/A 10.9 μg/m3 (46) 46.0
 
June 29, 2022, 10 p.m. 9.7 ppb (10) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.3 ppb (4) N/A 10.9 μg/m3 (46) 46.0
 
June 29, 2022, 10 p.m. 9.7 ppb (10) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.3 ppb (4) N/A 10.9 μg/m3 (46) 46.0
 
June 29, 2022, 9 p.m. 7.6 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
June 29, 2022, 6 p.m. 8.8 ppb (9) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.27 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
June 29, 2022, 4 p.m. 8.7 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 14.1 μg/m3 (56) 56.0
 
June 29, 2022, 1 p.m. 25.5 ppb (25) 7.4 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.33 ppb (4) N/A 7.4 μg/m3 (31) 31.0
 
June 29, 2022, 10 a.m. 18.8 ppb (18) 2.3 ppb (3) N/A 17.0 ppb (17) N/A N/A N/A 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 29, 2022, 10 a.m. 18.8 ppb (18) 2.3 ppb (3) N/A 17.0 ppb (17) N/A N/A N/A 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 29, 2022, 10 a.m. 18.8 ppb (18) 2.3 ppb (3) N/A 17.0 ppb (17) N/A N/A N/A 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 29, 2022, 9 a.m. 14.3 ppb (14) 1.0 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.2 ppb (3) N/A 10.2 μg/m3 (43) 43.0
 
June 29, 2022, 8 a.m. 13.8 ppb (14) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.2 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
June 29, 2022, 7 a.m. 13.7 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.19 ppb (3) N/A 7.2 μg/m3 (31) 31.0
 
June 29, 2022, 5 a.m. 11.6 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.2 ppb (3) N/A 8.9 μg/m3 (38) 38.0
 
June 29, 2022, 4 a.m. 12.7 ppb (12) 1.3 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.25 ppb (3) N/A 5.1 μg/m3 (22) 22.0
 
June 29, 2022, 2 a.m. 19.6 ppb (19) 2.8 ppb (3) N/A 17.0 ppb (17) N/A N/A N/A 0.34 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
June 28, 2022, 11 p.m. 12.4 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.31 ppb (4) N/A 8.1 μg/m3 (34) 34.0
 
June 28, 2022, 10 p.m. 6.0 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
June 28, 2022, 10 p.m. 6.0 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
June 28, 2022, 9 p.m. 6.0 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (3) N/A 6.1 μg/m3 (26) 26.0
 
June 28, 2022, 8 p.m. 8.6 ppb (9) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
June 28, 2022, 8 p.m. 8.6 ppb (9) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
June 28, 2022, 7 p.m. 11.3 ppb (11) 3.8 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.25 ppb (3) N/A 12.6 μg/m3 (53) 53.0
 
June 28, 2022, 7 p.m. 11.3 ppb (11) 3.8 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.25 ppb (3) N/A 12.6 μg/m3 (53) 53.0
 
June 28, 2022, 11 a.m. 14.7 ppb (14) 1.7 ppb (2) N/A 13.0 ppb (13) N/A N/A N/A 0.27 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 28, 2022, 10 a.m. 15.1 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.27 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
June 28, 2022, 8 a.m. 15.0 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.3 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
June 28, 2022, 8 a.m. 15.0 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.3 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
June 28, 2022, 8 a.m. 15.0 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.3 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
June 28, 2022, 7 a.m. 14.2 ppb (14) 0.0 ppb (0) N/A 14.0 ppb (14) N/A N/A N/A 0.29 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 28, 2022, 7 a.m. 14.2 ppb (14) 0.0 ppb (0) N/A 14.0 ppb (14) N/A N/A N/A 0.29 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 28, 2022, 6 a.m. 13.7 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (14) N/A N/A N/A 0.27 ppb (4) N/A 9.6 μg/m3 (40) 40.0
 
June 28, 2022, 5 a.m. 11.0 ppb (11) -0.1 ppb (0) N/A 11.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
June 28, 2022, 2 a.m. 6.4 ppb (7) -0.2 ppb (0) N/A 7.0 ppb (7) N/A N/A N/A 0.17 ppb (3) N/A 6.8 μg/m3 (29) 29.0
 
June 28, 2022, 1 a.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
June 28, 2022, midnight 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.11 ppb (2) N/A 4.1 μg/m3 (18) 18.0
 
June 28, 2022, midnight 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.11 ppb (2) N/A 4.1 μg/m3 (18) 18.0
 
June 27, 2022, 11 p.m. 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
June 27, 2022, 11 p.m. 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
June 27, 2022, 10 p.m. 0.2 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
June 27, 2022, 10 p.m. 0.2 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
June 27, 2022, 10 p.m. 0.2 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
June 27, 2022, 9 p.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
June 27, 2022, 9 p.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
June 27, 2022, 9 p.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.1 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
June 27, 2022, 8 p.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.1 ppb (2) N/A 4.6 μg/m3 (20) 20.0
 
June 27, 2022, 8 p.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.1 ppb (2) N/A 4.6 μg/m3 (20) 20.0
 
June 27, 2022, 4 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.11 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
June 27, 2022, 4 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.11 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
June 27, 2022, 2 p.m. 5.7 ppb (6) 2.4 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
June 27, 2022, 1 p.m. 9.1 ppb (9) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (3) N/A 5.1 μg/m3 (22) 22.0
 
June 27, 2022, 11 a.m. 7.3 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
June 27, 2022, 11 a.m. 7.3 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
June 27, 2022, 10 a.m. 4.1 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.13 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
June 27, 2022, 10 a.m. 4.1 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.13 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
June 27, 2022, 7 a.m. 3.7 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.12 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
June 27, 2022, 5 a.m. 3.4 ppb (4) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 2.9 μg/m3 (13) 13.0
 
June 27, 2022, 4 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
June 27, 2022, 4 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
June 27, 2022, 3 a.m. 2.1 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
June 27, 2022, 2 a.m. 2.5 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
June 27, 2022, 1 a.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (2) N/A 4.1 μg/m3 (18) 18.0
 
June 27, 2022, midnight 0.1 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.11 ppb (2) N/A 2.2 μg/m3 (10) 10.0
 
June 26, 2022, 10 p.m. 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.11 ppb (2) N/A 3.6 μg/m3 (16) 16.0
 
June 26, 2022, 9 p.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.11 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
June 26, 2022, 8 p.m. 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.12 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
June 26, 2022, 5 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.12 ppb (2) N/A 6.3 μg/m3 (27) 27.0
 
June 26, 2022, 4 p.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.12 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
June 26, 2022, 3 p.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (2) N/A 6.8 μg/m3 (29) 29.0
 
June 26, 2022, 1 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
June 26, 2022, 11 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (3) N/A 10.4 μg/m3 (44) 44.0
 
June 26, 2022, 11 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (3) N/A 10.4 μg/m3 (44) 44.0
 
June 26, 2022, 10 a.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 26, 2022, 10 a.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
June 26, 2022, 9 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
June 26, 2022, 8 a.m. 2.9 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
June 26, 2022, 6 a.m. 1.5 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) N/A 19.4 μg/m3 (67) 67.0
 
June 26, 2022, 5 a.m. 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.28 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
June 26, 2022, 5 a.m. 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.28 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
June 26, 2022, 4 a.m. 4.4 ppb (5) 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.32 ppb (4) N/A 14.9 μg/m3 (57) 57.0
 
June 26, 2022, 4 a.m. 4.4 ppb (5) 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.32 ppb (4) N/A 14.9 μg/m3 (57) 57.0
 
June 26, 2022, midnight 7.3 ppb (7) 1.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 16.2 μg/m3 (60) 60.0
 
June 26, 2022, midnight 7.3 ppb (7) 1.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 16.2 μg/m3 (60) 60.0
 
June 25, 2022, 11 p.m. 6.5 ppb (7) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.37 ppb (5) N/A 19.6 μg/m3 (67) 67.0
 
June 25, 2022, 3 p.m. 11.6 ppb (11) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.31 ppb (4) N/A 12.2 μg/m3 (52) 52.0
 
June 25, 2022, 3 p.m. 11.6 ppb (11) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.31 ppb (4) N/A 12.2 μg/m3 (52) 52.0
 
June 25, 2022, 3 p.m. 11.6 ppb (11) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.31 ppb (4) N/A 12.2 μg/m3 (52) 52.0
 
June 25, 2022, 2 p.m. 11.8 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 9.9 μg/m3 (42) 42.0
 
June 25, 2022, 2 p.m. 11.8 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 9.9 μg/m3 (42) 42.0
 
June 25, 2022, 2 p.m. 11.8 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 9.9 μg/m3 (42) 42.0
 
June 25, 2022, 2 p.m. 11.8 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 9.9 μg/m3 (42) 42.0
 
June 25, 2022, 1 p.m. 20.6 ppb (20) 4.5 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
June 25, 2022, 1 p.m. 20.6 ppb (20) 4.5 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
June 25, 2022, noon 19.5 ppb (19) 3.4 ppb (4) N/A 16.0 ppb (16) N/A N/A N/A 0.32 ppb (4) N/A 11.8 μg/m3 (50) 50.0
 
June 25, 2022, 10 a.m. 15.8 ppb (15) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A 0.28 ppb (4) N/A 12.8 μg/m3 (53) 53.0
 
June 25, 2022, 9 a.m. 12.6 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.23 ppb (3) N/A 10.4 μg/m3 (44) 44.0
 
June 25, 2022, 3 a.m. 17.1 ppb (17) 1.3 ppb (2) N/A 16.0 ppb (16) N/A N/A N/A 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
June 25, 2022, 1 a.m. 10.9 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A N/A 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
June 25, 2022, 1 a.m. 10.9 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A N/A 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
June 25, 2022, midnight 8.3 ppb (8) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.27 ppb (4) N/A 9.9 μg/m3 (42) 42.0
 
June 24, 2022, 10 p.m. 10.4 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 7.4 μg/m3 (31) 31.0
 
June 24, 2022, 9 p.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (3) N/A 8.9 μg/m3 (38) 38.0
 
June 24, 2022, 8 p.m. 6.9 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 9.4 μg/m3 (40) 40.0
 
June 24, 2022, 7 p.m. 9.3 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.29 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 24, 2022, 7 p.m. 9.3 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.29 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 24, 2022, 3 p.m. 13.1 ppb (13) 3.8 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
June 24, 2022, 2 p.m. 18.2 ppb (18) 5.1 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 8.4 μg/m3 (36) 36.0
 
June 24, 2022, 1 p.m. 28.8 ppb (28) 8.1 ppb (8) N/A 21.0 ppb (20) N/A N/A N/A 0.4 ppb (5) N/A 11.4 μg/m3 (48) 48.0
 
June 24, 2022, noon 52.3 ppb (50) 19.6 ppb (19) N/A 33.0 ppb (32) N/A N/A N/A 0.63 ppb (7) N/A 12.7 μg/m3 (53) 53.0
 
June 24, 2022, 11 a.m. 57.5 ppb (55) 27.5 ppb (26) N/A 30.0 ppb (29) N/A N/A N/A 0.66 ppb (8) N/A 14.7 μg/m3 (57) 57.0
 
June 24, 2022, 11 a.m. 57.5 ppb (55) 27.5 ppb (26) N/A 30.0 ppb (29) N/A N/A N/A 0.66 ppb (8) N/A 14.7 μg/m3 (57) 57.0
 
June 24, 2022, 10 a.m. 18.6 ppb (18) 2.4 ppb (3) N/A 16.0 ppb (16) N/A N/A N/A 0.32 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
June 24, 2022, 8 a.m. 26.4 ppb (25) 0.3 ppb (1) N/A 26.0 ppb (25) N/A N/A N/A 0.34 ppb (4) N/A 9.9 μg/m3 (42) 42.0
 
June 24, 2022, 7 a.m. 35.6 ppb (34) 5.6 ppb (6) N/A 30.0 ppb (29) N/A N/A N/A 0.38 ppb (5) N/A 8.1 μg/m3 (34) 34.0
 
June 24, 2022, 6 a.m. 17.0 ppb (17) -0.1 ppb (0) N/A 17.0 ppb (17) N/A N/A N/A 0.28 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
June 24, 2022, 5 a.m. 13.6 ppb (13) -0.1 ppb (0) N/A 14.0 ppb (14) N/A N/A N/A 0.26 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
June 24, 2022, 4 a.m. 14.1 ppb (14) -0.1 ppb (0) N/A 14.0 ppb (14) N/A N/A N/A 0.26 ppb (4) N/A 7.5 μg/m3 (32) 32.0
 
June 24, 2022, 2 a.m. 4.1 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
June 24, 2022, 1 a.m. 2.9 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 6.6 μg/m3 (28) 28.0