ID: 2663

AQSQID: 380530002

Site Name: Trnp-Nu

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

Updated: June 19, 2021, 7:51 a.m.

Location: Watford City (Scenic Loop Dr), ND

Reporting: True, Located: True

Current AQI: 14.0

Watford City (Scenic Loop Dr) ND, US: 47.6011, -103.2642

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 19, 2021, 5 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 14.0 ppb (13) N/A 10.0 μg/m3 (10) 3.3 μg/m3 (14) 14.0
 
June 19, 2021, 4 a.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 10.0 μg/m3 (10) 3.3 μg/m3 (14) 16.0
 
June 19, 2021, 3 a.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 12.0 μg/m3 (12) 3.3 μg/m3 (14) 22.0
 
June 19, 2021, 2 a.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 12.0 μg/m3 (12) 3.4 μg/m3 (15) 30.0
 
June 19, 2021, 1 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 11.0 μg/m3 (11) 3.1 μg/m3 (13) 33.0
 
June 19, 2021, midnight 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 36.0
 
June 18, 2021, 11 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 9.0 μg/m3 (9) 3.0 μg/m3 (13) 36.0
 
June 18, 2021, 10 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 9.0 μg/m3 (9) 2.7 μg/m3 (12) 35.0
 
June 18, 2021, 9 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 8.0 μg/m3 (8) 2.9 μg/m3 (13) 35.0
 
June 18, 2021, 8 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 10.0 μg/m3 (10) 2.7 μg/m3 (12) 34.0
 
June 18, 2021, 7 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 10.0 μg/m3 (10) 2.8 μg/m3 (12) 32.0
 
June 18, 2021, 6 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 34.0
 
June 18, 2021, 5 p.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 11.0 μg/m3 (11) 3.1 μg/m3 (13) 34.0
 
June 18, 2021, 4 p.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 14.0 μg/m3 (13) 3.2 μg/m3 (14) 34.0
 
June 18, 2021, 3 p.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 13.0 μg/m3 (13) 3.0 μg/m3 (13) 35.0
 
June 18, 2021, 2 p.m. 3.3 ppb (4) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 22.0 μg/m3 (21) 4.4 μg/m3 (19) 31.0
 
June 18, 2021, 1 p.m. 4.8 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 25.0 μg/m3 (24) 4.6 μg/m3 (20) 26.0
 
June 18, 2021, noon 2.3 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 14.0 μg/m3 (13) 3.5 μg/m3 (15) 18.0
 
June 18, 2021, 11 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 12.0 ppb (12) N/A 11.0 μg/m3 (11) 3.3 μg/m3 (14) 14.0
 
June 18, 2021, 10 a.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A 11.0 μg/m3 (11) 3.1 μg/m3 (13) 13.0
 
June 18, 2021, 9 a.m. 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 11.0 ppb (11) N/A 11.0 μg/m3 (11) 3.1 μg/m3 (13) 13.0
 
June 18, 2021, 8 a.m. 1.7 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 11.0 ppb (11) N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 13.0
 
June 18, 2021, 7 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 12.0 ppb (12) N/A 11.0 μg/m3 (11) 2.7 μg/m3 (12) 12.0
 
June 18, 2021, 6 a.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 10.0 μg/m3 (10) 2.5 μg/m3 (11) 17.0
 
June 18, 2021, 5 a.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 9.0 μg/m3 (9) 2.2 μg/m3 (10) 19.0
 
June 18, 2021, 4 a.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 8.0 μg/m3 (8) 2.2 μg/m3 (10) 24.0
 
June 18, 2021, 3 a.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 11.0 μg/m3 (11) 2.3 μg/m3 (10) 30.0
 
June 18, 2021, 2 a.m. 0.9 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 45.0 ppb (42) N/A 10.0 μg/m3 (10) 2.2 μg/m3 (10) 42.0
 
June 18, 2021, 1 a.m. 0.7 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 8.0 μg/m3 (8) 2.2 μg/m3 (10) 45.0
 
June 18, 2021, midnight 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 7.0 μg/m3 (7) 2.4 μg/m3 (10) 48.0
 
June 17, 2021, 11 p.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 12.0 μg/m3 (12) 3.2 μg/m3 (14) 48.0
 
June 17, 2021, 10 p.m. 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 12.0 μg/m3 (12) 3.3 μg/m3 (14) 46.0
 
June 17, 2021, 9 p.m. 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 11.0 μg/m3 (11) 3.3 μg/m3 (14) 45.0
 
June 17, 2021, 8 p.m. 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 45.0
 
June 17, 2021, 7 p.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 48.0 ppb (45) N/A 11.0 μg/m3 (11) 3.1 μg/m3 (13) 45.0
 
June 17, 2021, 6 p.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) N/A 12.0 μg/m3 (12) 3.1 μg/m3 (13) 44.0
 
June 17, 2021, 5 p.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 10.0 μg/m3 (10) 3.1 μg/m3 (13) 43.0
 
June 17, 2021, 4 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 12.0 μg/m3 (12) 3.2 μg/m3 (14) 41.0
 
June 17, 2021, 3 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 9.0 μg/m3 (9) 2.8 μg/m3 (12) 38.0
 
June 17, 2021, 2 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 11.0 μg/m3 (11) 2.6 μg/m3 (11) 31.0
 
June 17, 2021, 1 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 21.0
 
June 17, 2021, noon 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) N/A 10.0 μg/m3 (10) 3.0 μg/m3 (13) 14.0
 
June 17, 2021, 11 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 7.0 ppb (7) N/A 10.0 μg/m3 (10) 2.8 μg/m3 (12) 12.0
 
June 17, 2021, 10 a.m. 1.4 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 7.0 ppb (7) N/A 9.0 μg/m3 (9) 3.0 μg/m3 (13) 13.0
 
June 17, 2021, 9 a.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 9.0 ppb (9) N/A 11.0 μg/m3 (11) 2.9 μg/m3 (13) 13.0
 
June 17, 2021, 8 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 10.0 ppb (10) N/A 10.0 μg/m3 (10) 2.8 μg/m3 (12) 12.0
 
June 17, 2021, 7 a.m. 1.7 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 12.0 ppb (12) N/A 11.0 μg/m3 (11) 2.6 μg/m3 (11) 12.0
 
June 17, 2021, 6 a.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 11.0 μg/m3 (11) 2.6 μg/m3 (11) 14.0
 
June 17, 2021, 5 a.m. 1.9 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 11.0 μg/m3 (11) 2.3 μg/m3 (10) 18.0
 
June 17, 2021, 4 a.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 11.0 μg/m3 (11) 2.3 μg/m3 (10) 24.0
 
June 17, 2021, 3 a.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 12.0 μg/m3 (12) 2.4 μg/m3 (10) 28.0
 
June 17, 2021, 2 a.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 12.0 μg/m3 (12) 2.3 μg/m3 (10) 39.0
 
June 17, 2021, 1 a.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 9.0 μg/m3 (9) 2.1 μg/m3 (9) 46.0
 
June 17, 2021, midnight 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 10.0 μg/m3 (10) 1.8 μg/m3 (8) 47.0
 
June 16, 2021, 11 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 11.0 μg/m3 (11) 2.0 μg/m3 (9) 48.0
 
June 16, 2021, 10 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 11.0 μg/m3 (11) 2.0 μg/m3 (9) 47.0
 
June 16, 2021, 9 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) N/A 12.0 μg/m3 (12) 2.5 μg/m3 (11) 48.0
 
June 16, 2021, 8 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) N/A 13.0 μg/m3 (13) 2.7 μg/m3 (12) 48.0
 
June 16, 2021, 7 p.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) N/A 18.0 μg/m3 (17) 3.3 μg/m3 (14) 47.0
 
June 16, 2021, 6 p.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) N/A 20.0 μg/m3 (19) 3.8 μg/m3 (16) 46.0
 
June 16, 2021, 5 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) N/A 24.0 μg/m3 (23) 4.1 μg/m3 (18) 46.0
 
June 16, 2021, 4 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) N/A 21.0 μg/m3 (20) 4.1 μg/m3 (18) 47.0
 
June 16, 2021, 3 p.m. 2.0 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 19.0 μg/m3 (18) 4.8 μg/m3 (20) 41.0
 
June 16, 2021, 2 p.m. 2.2 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 21.0 μg/m3 (20) 6.0 μg/m3 (25) 39.0
 
June 16, 2021, 1 p.m. 2.6 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 25.0 μg/m3 (24) 7.6 μg/m3 (32) 38.0
 
June 16, 2021, noon 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 27.0 μg/m3 (25) 7.2 μg/m3 (31) 36.0
 
June 16, 2021, 11 a.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 26.0 μg/m3 (25) 6.5 μg/m3 (28) 40.0
 
June 16, 2021, 10 a.m. 2.7 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 51.0 ppb (48) N/A 25.0 μg/m3 (24) 6.5 μg/m3 (28) 48.0
 
June 16, 2021, 9 a.m. 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 26.0 μg/m3 (25) 6.2 μg/m3 (26) 50.0
 
June 16, 2021, 8 a.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 57.0 ppb (58) N/A 22.0 μg/m3 (21) 5.7 μg/m3 (24) 58.0
 
June 16, 2021, 7 a.m. 2.1 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 58.0 ppb (61) N/A 22.0 μg/m3 (21) 5.7 μg/m3 (24) 61.0
 
June 16, 2021, 6 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 58.0 ppb (61) N/A 20.0 μg/m3 (19) 5.2 μg/m3 (22) 61.0
 
June 16, 2021, 5 a.m. 2.0 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 60.0 ppb (68) N/A 17.0 μg/m3 (16) 5.1 μg/m3 (22) 68.0
 
June 16, 2021, 4 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 62.0 ppb (74) N/A 19.0 μg/m3 (18) 4.9 μg/m3 (21) 74.0
 
June 16, 2021, 3 a.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 17.0 μg/m3 (16) 5.0 μg/m3 (21) 78.0
 
June 16, 2021, 2 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 65.0 ppb (84) N/A 21.0 μg/m3 (20) 5.3 μg/m3 (23) 84.0
 
June 16, 2021, 1 a.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 66.0 ppb (87) N/A 20.0 μg/m3 (19) 5.6 μg/m3 (24) 87.0
 
June 16, 2021, midnight 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 67.0 ppb (91) N/A 21.0 μg/m3 (20) 5.5 μg/m3 (23) 91.0
 
June 15, 2021, 11 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 68.0 ppb (94) N/A 19.0 μg/m3 (18) 5.5 μg/m3 (23) 94.0
 
June 15, 2021, 10 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 69.0 ppb (97) N/A 19.0 μg/m3 (18) 5.4 μg/m3 (23) 97.0
 
June 15, 2021, 9 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 69.0 ppb (97) N/A 19.0 μg/m3 (18) 5.4 μg/m3 (23) 97.0
 
June 15, 2021, 8 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 69.0 ppb (97) N/A 20.0 μg/m3 (19) 5.2 μg/m3 (22) 97.0
 
June 15, 2021, 7 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 68.0 ppb (94) N/A 20.0 μg/m3 (19) 5.2 μg/m3 (22) 94.0
 
June 15, 2021, 6 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 67.0 ppb (91) N/A 20.0 μg/m3 (19) 4.9 μg/m3 (21) 91.0
 
June 15, 2021, 5 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 66.0 ppb (87) N/A 21.0 μg/m3 (20) 4.8 μg/m3 (20) 87.0
 
June 15, 2021, 4 p.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 20.0 μg/m3 (19) 4.8 μg/m3 (20) 78.0
 
June 15, 2021, 3 p.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 58.0 ppb (61) N/A 18.0 μg/m3 (17) 4.6 μg/m3 (20) 61.0
 
June 15, 2021, 2 p.m. 2.3 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 57.0 ppb (58) N/A 15.0 μg/m3 (14) 4.4 μg/m3 (19) 58.0
 
June 15, 2021, 1 p.m. 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 17.0 μg/m3 (16) 4.3 μg/m3 (18) 55.0
 
June 15, 2021, noon 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 57.0 ppb (58) N/A 16.0 μg/m3 (15) 4.3 μg/m3 (18) 58.0
 
June 15, 2021, 11 a.m. 2.7 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 55.0 ppb (51) N/A 16.0 μg/m3 (15) 4.1 μg/m3 (18) 51.0
 
June 15, 2021, 10 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 14.0 μg/m3 (13) 3.9 μg/m3 (17) 50.0
 
June 15, 2021, 9 a.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 14.0 μg/m3 (13) 3.8 μg/m3 (16) 55.0
 
June 15, 2021, 8 a.m. 2.1 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 15.0 μg/m3 (14) 3.8 μg/m3 (16) 55.0
 
June 15, 2021, 7 a.m. 1.7 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 60.0 ppb (68) N/A 15.0 μg/m3 (14) 3.8 μg/m3 (16) 68.0
 
June 15, 2021, 6 a.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 59.0 ppb (65) N/A 13.0 μg/m3 (13) 3.8 μg/m3 (16) 65.0
 
June 15, 2021, 5 a.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 58.0 ppb (61) N/A 15.0 μg/m3 (14) 3.9 μg/m3 (17) 61.0
 
June 15, 2021, 4 a.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 58.0 ppb (61) N/A 12.0 μg/m3 (12) 3.8 μg/m3 (16) 61.0
 
June 15, 2021, 3 a.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 57.0 ppb (58) N/A 15.0 μg/m3 (14) 3.9 μg/m3 (17) 58.0
 
June 15, 2021, 2 a.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 62.0 ppb (74) N/A 14.0 μg/m3 (13) 3.6 μg/m3 (16) 74.0
 
June 15, 2021, 1 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 65.0 ppb (84) N/A 13.0 μg/m3 (13) 3.5 μg/m3 (15) 84.0
 
June 15, 2021, midnight 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 65.0 ppb (84) N/A 13.0 μg/m3 (13) 3.5 μg/m3 (15) 84.0
 
June 14, 2021, 11 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 64.0 ppb (81) N/A 14.0 μg/m3 (13) 3.8 μg/m3 (16) 81.0
 
June 14, 2021, 10 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 65.0 ppb (84) N/A 15.0 μg/m3 (14) 3.8 μg/m3 (16) 84.0
 
June 14, 2021, 9 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 65.0 ppb (84) N/A 13.0 μg/m3 (13) 3.5 μg/m3 (15) 84.0
 
June 14, 2021, 8 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 64.0 ppb (81) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 81.0
 
June 14, 2021, 7 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 64.0 ppb (81) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 81.0
 
June 14, 2021, 6 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 62.0 ppb (74) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 74.0
 
June 14, 2021, 5 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 62.0 ppb (74) N/A 9.0 μg/m3 (9) 2.6 μg/m3 (11) 74.0
 
June 14, 2021, 4 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 60.0 ppb (68) N/A 7.0 μg/m3 (7) 2.4 μg/m3 (10) 68.0
 
June 14, 2021, 3 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 59.0 ppb (65) N/A 9.0 μg/m3 (9) 2.9 μg/m3 (13) 65.0
 
June 14, 2021, 2 p.m. 2.1 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 56.0 ppb (55) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 55.0
 
June 14, 2021, 1 p.m. 3.6 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 36.0 ppb (34) N/A 13.0 μg/m3 (13) 3.2 μg/m3 (14) 34.0
 
June 14, 2021, noon 2.3 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 8.0 μg/m3 (8) 2.7 μg/m3 (12) 20.0
 
June 14, 2021, 11 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 7.0 μg/m3 (7) 2.5 μg/m3 (11) 15.0
 
June 14, 2021, 10 a.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 9.0 μg/m3 (9) 2.7 μg/m3 (12) 19.0
 
June 14, 2021, 9 a.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 9.0 μg/m3 (9) 2.8 μg/m3 (12) 24.0
 
June 14, 2021, 8 a.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 10.0 μg/m3 (10) 2.9 μg/m3 (13) 26.0
 
June 14, 2021, 7 a.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 10.0 μg/m3 (10) 2.9 μg/m3 (13) 31.0
 
June 14, 2021, 6 a.m. 2.8 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 10.0 μg/m3 (10) 2.8 μg/m3 (12) 29.0
 
June 14, 2021, 5 a.m. 2.4 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 10.0 μg/m3 (10) 3.0 μg/m3 (13) 31.0
 
June 14, 2021, 4 a.m. 2.7 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 13.0 μg/m3 (13) 3.3 μg/m3 (14) 38.0
 
June 14, 2021, 3 a.m. 2.8 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 50.0 ppb (47) N/A 13.0 μg/m3 (13) 3.2 μg/m3 (14) 47.0
 
June 14, 2021, 2 a.m. 2.4 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 58.0 ppb (61) N/A 12.0 μg/m3 (12) 3.1 μg/m3 (13) 61.0
 
June 14, 2021, 1 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 62.0 ppb (74) N/A 12.0 μg/m3 (12) 3.1 μg/m3 (13) 74.0
 
June 14, 2021, midnight 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 12.0 μg/m3 (12) 3.2 μg/m3 (14) 78.0
 
June 13, 2021, 11 p.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 78.0
 
June 13, 2021, 10 p.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 63.0 ppb (78) N/A 10.0 μg/m3 (10) 2.8 μg/m3 (12) 78.0
 
June 13, 2021, 9 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 62.0 ppb (74) N/A 7.0 μg/m3 (7) 2.6 μg/m3 (11) 74.0
 
June 13, 2021, 8 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 61.0 ppb (71) N/A 7.0 μg/m3 (7) 2.1 μg/m3 (9) 71.0
 
June 13, 2021, 7 p.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 60.0 ppb (68) N/A 8.0 μg/m3 (8) 1.9 μg/m3 (8) 68.0
 
June 13, 2021, 6 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 58.0 ppb (61) N/A 8.0 μg/m3 (8) 1.9 μg/m3 (8) 61.0
 
June 13, 2021, 5 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 55.0 ppb (51) N/A 7.0 μg/m3 (7) 2.0 μg/m3 (9) 51.0
 
June 13, 2021, 4 p.m. 2.2 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 53.0 ppb (50) N/A 7.0 μg/m3 (7) 2.1 μg/m3 (9) 50.0
 
June 13, 2021, 3 p.m. 2.2 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 8.0 μg/m3 (8) 2.1 μg/m3 (9) 46.0
 
June 13, 2021, 2 p.m. 4.1 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 36.0 ppb (34) N/A 8.0 μg/m3 (8) 2.8 μg/m3 (12) 34.0
 
June 13, 2021, 1 p.m. 3.5 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 9.0 μg/m3 (9) 3.2 μg/m3 (14) 25.0
 
June 13, 2021, noon 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 7.0 μg/m3 (7) 3.1 μg/m3 (13) 15.0
 
June 13, 2021, 11 a.m. 2.6 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 8.0 μg/m3 (8) 3.0 μg/m3 (13) 14.0
 
June 13, 2021, 10 a.m. 2.7 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 9.0 μg/m3 (9) 3.1 μg/m3 (13) 18.0
 
June 13, 2021, 9 a.m. 3.2 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 9.0 μg/m3 (9) 3.1 μg/m3 (13) 23.0
 
June 13, 2021, 8 a.m. 3.5 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 25.0
 
June 13, 2021, 7 a.m. 3.2 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 11.0 μg/m3 (11) 2.8 μg/m3 (12) 27.0
 
June 13, 2021, 6 a.m. 2.5 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 10.0 μg/m3 (10) 3.3 μg/m3 (14) 25.0
 
June 13, 2021, 5 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 11.0 μg/m3 (11) 3.5 μg/m3 (15) 32.0
 
June 13, 2021, 4 a.m. 2.5 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 15.0 μg/m3 (14) 3.6 μg/m3 (16) 35.0
 
June 13, 2021, 3 a.m. 2.6 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 12.0 μg/m3 (12) 3.4 μg/m3 (15) 29.0
 
June 13, 2021, 2 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 13.0 μg/m3 (13) 3.4 μg/m3 (15) 40.0
 
June 13, 2021, 1 a.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 13.0 μg/m3 (13) 3.3 μg/m3 (14) 49.0
 
June 13, 2021, midnight 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) N/A 12.0 μg/m3 (12) 3.0 μg/m3 (13) 51.0
 
June 12, 2021, 11 p.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) N/A 9.0 μg/m3 (9) 2.8 μg/m3 (12) 51.0
 
June 12, 2021, 10 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 54.0 ppb (50) N/A 11.0 μg/m3 (11) 2.6 μg/m3 (11) 50.0
 
June 12, 2021, 9 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) N/A 7.0 μg/m3 (7) 2.3 μg/m3 (10) 49.0
 
June 12, 2021, 8 p.m. 0.8 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 49.0 ppb (46) N/A 7.0 μg/m3 (7) 2.1 μg/m3 (9) 46.0
 
June 12, 2021, 7 p.m. 0.8 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) N/A 7.0 μg/m3 (7) 1.9 μg/m3 (8) 43.0
 
June 12, 2021, 6 p.m. 0.7 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 6.0 μg/m3 (6) 1.6 μg/m3 (7) 41.0
 
June 12, 2021, 5 p.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 6.0 μg/m3 (6) 1.6 μg/m3 (7) 39.0
 
June 12, 2021, 4 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 7.0 μg/m3 (7) 1.7 μg/m3 (8) 39.0
 
June 12, 2021, 3 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 8.0 μg/m3 (8) 1.7 μg/m3 (8) 38.0
 
June 12, 2021, 2 p.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 8.0 μg/m3 (8) 2.0 μg/m3 (9) 27.0
 
June 12, 2021, 1 p.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) N/A 7.0 μg/m3 (7) 2.2 μg/m3 (10) 20.0
 
June 12, 2021, noon 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 13.0 ppb (13) N/A 7.0 μg/m3 (7) 2.3 μg/m3 (10) 13.0
 
June 12, 2021, 11 a.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 10.0 ppb (10) N/A 7.0 μg/m3 (7) 2.1 μg/m3 (9) 10.0
 
June 12, 2021, 10 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 11.0 ppb (11) N/A 7.0 μg/m3 (7) 2.0 μg/m3 (9) 11.0
 
June 12, 2021, 9 a.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 14.0 ppb (13) N/A 7.0 μg/m3 (7) 2.0 μg/m3 (9) 13.0
 
June 12, 2021, 8 a.m. 1.8 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 7.0 μg/m3 (7) 1.9 μg/m3 (8) 18.0
 
June 12, 2021, 7 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 9.0 μg/m3 (9) 2.0 μg/m3 (9) 21.0
 
June 12, 2021, 6 a.m. 1.8 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 9.0 μg/m3 (9) 2.0 μg/m3 (9) 23.0