ID: 2663

AQSQID: 380530002

Site Name: Trnp-Nu

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

Updated: Sept. 25, 2020, 8:39 a.m.

Location: Watford City (Scenic Loop Dr), ND

Reporting: True, Located: True

Current AQI: 28.0

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
Sept. 25, 2020, 6 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 6.8 μg/m3 (6) 1.7 μg/m3 (7) 28.0
 
Sept. 25, 2020, 5 a.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 5.4 μg/m3 (5) 3.3 μg/m3 (14) 28.0
 
Sept. 25, 2020, 4 a.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 6.7 μg/m3 (6) 3.9 μg/m3 (16) 29.0
 
Sept. 25, 2020, 3 a.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 12.1 μg/m3 (11) 4.0 μg/m3 (17) 31.0
 
Sept. 25, 2020, 2 a.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 12.5 μg/m3 (11) 8.4 μg/m3 (35) 35.0
 
Sept. 25, 2020, 1 a.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 43.1 μg/m3 (39) 14.7 μg/m3 (56) 56.0
 
Sept. 25, 2020, midnight 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 19.4 μg/m3 (18) 13.5 μg/m3 (53) 53.0
 
Sept. 24, 2020, 11 p.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 21.1 μg/m3 (19) 16.8 μg/m3 (60) 60.0
 
Sept. 24, 2020, 10 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 52.0 ppb (40) N/A 20.3 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
Sept. 24, 2020, 9 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 17.9 μg/m3 (16) 13.7 μg/m3 (54) 54.0
 
Sept. 24, 2020, 8 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 25.1 μg/m3 (23) 13.6 μg/m3 (53) 53.0
 
Sept. 24, 2020, 7 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 49.0 ppb (38) N/A 20.4 μg/m3 (19) 11.9 μg/m3 (50) 50.0
 
Sept. 24, 2020, 6 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 20.7 μg/m3 (19) 16.8 μg/m3 (60) 60.0
 
Sept. 24, 2020, 5 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 21.2 μg/m3 (19) 14.8 μg/m3 (56) 56.0
 
Sept. 24, 2020, 4 p.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 19.8 μg/m3 (18) 14.4 μg/m3 (55) 55.0
 
Sept. 24, 2020, 3 p.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 17.7 μg/m3 (16) 12.3 μg/m3 (51) 51.0
 
Sept. 24, 2020, 2 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 14.5 μg/m3 (13) 10.3 μg/m3 (43) 43.0
 
Sept. 24, 2020, 1 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 14.0 μg/m3 (13) 14.2 μg/m3 (55) 55.0
 
Sept. 24, 2020, noon 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 15.6 μg/m3 (14) 8.9 μg/m3 (37) 37.0
 
Sept. 24, 2020, 11 a.m. 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 12.8 μg/m3 (12) 11.4 μg/m3 (48) 48.0
 
Sept. 24, 2020, 10 a.m. 1.9 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 31.0
 
Sept. 24, 2020, 9 a.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 8.0 μg/m3 (7) 6.9 μg/m3 (29) 29.0
 
Sept. 24, 2020, 8 a.m. 3.3 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 8.0 μg/m3 (7) 3.5 μg/m3 (15) 15.0
 
Sept. 24, 2020, 7 a.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 15.0 ppb (12) N/A 7.0 μg/m3 (6) 6.1 μg/m3 (25) 25.0
 
Sept. 24, 2020, 6 a.m. 1.7 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
Sept. 24, 2020, 5 a.m. 1.8 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 13.0 ppb (10) N/A 7.0 μg/m3 (6) 6.7 μg/m3 (28) 28.0
 
Sept. 24, 2020, 4 a.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
Sept. 24, 2020, 3 a.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 14.0 μg/m3 (13) 8.9 μg/m3 (37) 37.0
 
Sept. 24, 2020, 2 a.m. 1.9 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 15.0 μg/m3 (14) 11.6 μg/m3 (48) 48.0
 
Sept. 24, 2020, 1 a.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 19.0 μg/m3 (17) 12.7 μg/m3 (51) 51.0
 
Sept. 24, 2020, midnight 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 21.0 μg/m3 (19) 10.6 μg/m3 (44) 44.0
 
Sept. 23, 2020, 11 p.m. 3.0 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 22.0 μg/m3 (20) 17.6 μg/m3 (62) 62.0
 
Sept. 23, 2020, 10 p.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 20.0 μg/m3 (18) 17.7 μg/m3 (62) 62.0
 
Sept. 23, 2020, 9 p.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 20.0 μg/m3 (18) 10.8 μg/m3 (45) 45.0
 
Sept. 23, 2020, 8 p.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 42.0 ppb (32) N/A 20.0 μg/m3 (18) 18.4 μg/m3 (64) 64.0
 
Sept. 23, 2020, 7 p.m. 1.8 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 40.0 ppb (31) N/A 20.0 μg/m3 (18) 13.7 μg/m3 (54) 54.0
 
Sept. 23, 2020, 6 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 39.0 ppb (30) N/A 19.0 μg/m3 (17) 13.7 μg/m3 (54) 54.0
 
Sept. 23, 2020, 5 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 16.0 μg/m3 (15) 11.1 μg/m3 (46) 46.0
 
Sept. 23, 2020, 4 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 18.0 μg/m3 (16) 12.1 μg/m3 (50) 50.0
 
Sept. 23, 2020, 3 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 16.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
Sept. 23, 2020, 2 p.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 19.0 μg/m3 (17) 10.3 μg/m3 (43) 43.0
 
Sept. 23, 2020, 1 p.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 22.0 μg/m3 (20) 13.7 μg/m3 (54) 54.0
 
Sept. 23, 2020, noon 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 26.0 μg/m3 (24) 13.6 μg/m3 (53) 53.0
 
Sept. 23, 2020, 11 a.m. 4.2 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 27.0 μg/m3 (25) 14.8 μg/m3 (56) 56.0
 
Sept. 23, 2020, 10 a.m. 5.1 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 21.0 μg/m3 (19) 11.5 μg/m3 (48) 48.0
 
Sept. 23, 2020, 9 a.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 18.0 μg/m3 (16) 13.5 μg/m3 (53) 53.0
 
Sept. 23, 2020, 8 a.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 20.0 μg/m3 (18) 7.9 μg/m3 (33) 33.0
 
Sept. 23, 2020, 7 a.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 19.0 μg/m3 (17) 8.6 μg/m3 (36) 36.0
 
Sept. 23, 2020, 6 a.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 19.0 μg/m3 (17) 10.8 μg/m3 (45) 45.0
 
Sept. 23, 2020, 5 a.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 18.0 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
Sept. 23, 2020, 4 a.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 13.0 μg/m3 (12) 8.2 μg/m3 (34) 34.0
 
Sept. 23, 2020, 3 a.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 14.0 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
Sept. 23, 2020, 2 a.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 20.0 μg/m3 (18) 8.4 μg/m3 (35) 35.0
 
Sept. 23, 2020, 1 a.m. 1.0 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 29.0 μg/m3 (26) 8.2 μg/m3 (34) 34.0
 
Sept. 23, 2020, midnight 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 19.0 μg/m3 (17) 10.4 μg/m3 (43) 43.0
 
Sept. 22, 2020, 11 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 55.0 ppb (42) N/A 13.0 μg/m3 (12) 7.2 μg/m3 (30) 42.0
 
Sept. 22, 2020, 10 p.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 56.0 ppb (43) N/A 10.0 μg/m3 (9) 8.2 μg/m3 (34) 43.0
 
Sept. 22, 2020, 9 p.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 56.0 ppb (43) N/A 9.0 μg/m3 (8) 6.3 μg/m3 (26) 43.0
 
Sept. 22, 2020, 8 p.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 55.0 ppb (42) N/A 7.0 μg/m3 (6) 9.1 μg/m3 (38) 42.0
 
Sept. 22, 2020, 7 p.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 55.0 ppb (42) N/A 13.0 μg/m3 (12) 11.5 μg/m3 (48) 48.0
 
Sept. 22, 2020, 6 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 52.0 ppb (40) N/A 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
Sept. 22, 2020, 5 p.m. 0.8 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 22.0 μg/m3 (20) 15.6 μg/m3 (58) 58.0
 
Sept. 22, 2020, 4 p.m. 0.9 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 17.0 μg/m3 (15) 17.3 μg/m3 (61) 61.0
 
Sept. 22, 2020, 3 p.m. 1.4 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 17.0 μg/m3 (15) 14.2 μg/m3 (55) 55.0
 
Sept. 22, 2020, 2 p.m. 2.8 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 16.0 μg/m3 (15) 15.1 μg/m3 (57) 57.0
 
Sept. 22, 2020, 1 p.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 13.0 μg/m3 (12) 5.8 μg/m3 (24) 24.0
 
Sept. 22, 2020, noon 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 12.0 μg/m3 (11) 8.3 μg/m3 (35) 35.0
 
Sept. 22, 2020, 11 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 12.0 μg/m3 (11) 9.9 μg/m3 (41) 41.0
 
Sept. 22, 2020, 10 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 10.0 μg/m3 (9) 6.7 μg/m3 (28) 28.0
 
Sept. 22, 2020, 9 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 10.0 ppb (8) N/A 9.0 μg/m3 (8) 9.9 μg/m3 (41) 41.0
 
Sept. 22, 2020, 8 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 10.0 ppb (8) N/A 11.0 μg/m3 (10) 9.4 μg/m3 (39) 39.0
 
Sept. 22, 2020, 7 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 13.0 ppb (10) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Sept. 22, 2020, 6 a.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 9.0 μg/m3 (8) 6.1 μg/m3 (25) 25.0
 
Sept. 22, 2020, 4 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 10.0 μg/m3 (9) 3.5 μg/m3 (15) 15.0
 
Sept. 22, 2020, 3 a.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 20.0
 
Sept. 22, 2020, 2 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 11.0 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Sept. 22, 2020, 1 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 11.0 μg/m3 (10) 8.9 μg/m3 (37) 37.0
 
Sept. 22, 2020, midnight 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 9.0 μg/m3 (8) 7.9 μg/m3 (33) 33.0
 
Sept. 21, 2020, 11 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 33.0
 
Sept. 21, 2020, 10 p.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 19.0 μg/m3 (17) 8.2 μg/m3 (34) 34.0
 
Sept. 21, 2020, 9 p.m. 0.7 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 15.0 μg/m3 (14) 6.9 μg/m3 (29) 32.0
 
Sept. 21, 2020, 8 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 11.0 μg/m3 (10) 7.2 μg/m3 (30) 32.0
 
Sept. 21, 2020, 7 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 15.0 μg/m3 (14) 9.1 μg/m3 (38) 38.0
 
Sept. 21, 2020, 6 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 10.0 μg/m3 (9) 10.5 μg/m3 (44) 44.0
 
Sept. 21, 2020, 5 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 12.0 μg/m3 (11) 11.8 μg/m3 (49) 49.0
 
Sept. 21, 2020, 4 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 14.0 μg/m3 (13) 14.9 μg/m3 (56) 56.0
 
Sept. 21, 2020, 3 p.m. 0.9 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 20.0 μg/m3 (18) 15.9 μg/m3 (58) 58.0
 
Sept. 21, 2020, 2 p.m. 1.0 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 16.0 μg/m3 (15) 15.2 μg/m3 (57) 57.0
 
Sept. 21, 2020, 1 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 16.0 μg/m3 (15) 16.2 μg/m3 (59) 59.0
 
Sept. 21, 2020, noon 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 16.0 μg/m3 (15) 15.8 μg/m3 (58) 58.0
 
Sept. 21, 2020, 11 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 16.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
Sept. 21, 2020, 10 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 16.0 μg/m3 (15) 14.0 μg/m3 (54) 54.0
 
Sept. 21, 2020, 9 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 16.0 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
Sept. 21, 2020, 8 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 17.0 μg/m3 (15) 17.3 μg/m3 (61) 61.0
 
Sept. 21, 2020, 7 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 16.0 μg/m3 (15) 15.8 μg/m3 (58) 58.0
 
Sept. 21, 2020, 6 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 16.0 μg/m3 (15) 16.6 μg/m3 (60) 60.0
 
Sept. 21, 2020, 5 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 15.0 μg/m3 (14) 14.9 μg/m3 (56) 56.0
 
Sept. 21, 2020, 4 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 16.0 μg/m3 (15) 14.0 μg/m3 (54) 54.0
 
Sept. 21, 2020, 3 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 15.0 μg/m3 (14) 12.6 μg/m3 (51) 51.0
 
Sept. 21, 2020, 2 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 14.0 μg/m3 (13) 12.2 μg/m3 (50) 50.0
 
Sept. 21, 2020, 1 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 14.0 μg/m3 (13) 12.5 μg/m3 (51) 51.0
 
Sept. 21, 2020, midnight 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 13.0 μg/m3 (12) 11.1 μg/m3 (46) 46.0
 
Sept. 20, 2020, 11 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 17.0 μg/m3 (15) 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 10 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 30.0 μg/m3 (27) 10.5 μg/m3 (44) 44.0
 
Sept. 20, 2020, 9 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 37.0 μg/m3 (34) 12.7 μg/m3 (51) 51.0
 
Sept. 20, 2020, 8 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 44.0 μg/m3 (40) 12.4 μg/m3 (51) 51.0
 
Sept. 20, 2020, 7 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 48.0 μg/m3 (44) 19.0 μg/m3 (65) 65.0
 
Sept. 20, 2020, 6 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 28.0 μg/m3 (25) 17.6 μg/m3 (62) 62.0
 
Sept. 20, 2020, 5 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Sept. 20, 2020, 4 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 15.0 μg/m3 (14) 15.4 μg/m3 (57) 57.0
 
Sept. 20, 2020, 3 p.m. 1.1 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 17.0 μg/m3 (15) 16.8 μg/m3 (60) 60.0
 
Sept. 20, 2020, 2 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 15.0 μg/m3 (14) 16.0 μg/m3 (59) 59.0
 
Sept. 20, 2020, 1 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 18.0 μg/m3 (16) 18.3 μg/m3 (63) 63.0
 
Sept. 20, 2020, noon 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 30.0 μg/m3 (27) 28.5 μg/m3 (85) 85.0
 
Sept. 20, 2020, 11 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 31.0 μg/m3 (28) 27.3 μg/m3 (83) 83.0
 
Sept. 20, 2020, 10 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 19.0 μg/m3 (17) 19.6 μg/m3 (66) 66.0
 
Sept. 20, 2020, 9 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 16.0 μg/m3 (15) 13.6 μg/m3 (53) 53.0
 
Sept. 20, 2020, 8 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 17.0 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
Sept. 20, 2020, 7 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 17.0 μg/m3 (15) 16.8 μg/m3 (60) 60.0
 
Sept. 20, 2020, 6 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 16.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
Sept. 20, 2020, 5 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 20.0 μg/m3 (18) 12.3 μg/m3 (51) 51.0
 
Sept. 20, 2020, 4 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 18.0 μg/m3 (16) 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 3 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 20.0 μg/m3 (18) 12.2 μg/m3 (50) 50.0
 
Sept. 20, 2020, 2 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 21.0 μg/m3 (19) 11.7 μg/m3 (49) 49.0
 
Sept. 20, 2020, 1 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 21.0 μg/m3 (19) 14.8 μg/m3 (56) 56.0
 
Sept. 20, 2020, midnight 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 23.0 μg/m3 (21) 14.2 μg/m3 (55) 55.0
 
Sept. 19, 2020, 11 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 23.0 μg/m3 (21) 14.7 μg/m3 (56) 56.0
 
Sept. 19, 2020, 10 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 23.0 μg/m3 (21) 10.7 μg/m3 (45) 45.0
 
Sept. 19, 2020, 9 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 21.0 μg/m3 (19) 12.6 μg/m3 (51) 51.0
 
Sept. 19, 2020, 8 p.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 21.0 μg/m3 (19) 10.6 μg/m3 (44) 44.0
 
Sept. 19, 2020, 7 p.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
Sept. 19, 2020, 6 p.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 17.0 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
Sept. 19, 2020, 5 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 15.0 μg/m3 (14) 12.7 μg/m3 (51) 51.0
 
Sept. 19, 2020, 4 p.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 13.0 μg/m3 (12) 6.5 μg/m3 (27) 27.0
 
Sept. 19, 2020, 3 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 9.9 μg/m3 (41) 41.0
 
Sept. 19, 2020, 2 p.m. 2.8 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 10.0 μg/m3 (9) 10.9 μg/m3 (45) 45.0
 
Sept. 19, 2020, 1 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 9.0 μg/m3 (8) 7.7 μg/m3 (32) 32.0
 
Sept. 19, 2020, noon 1.9 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 16.0 ppb (12) N/A 11.0 μg/m3 (10) 8.5 μg/m3 (35) 35.0
 
Sept. 19, 2020, 11 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 8.3 μg/m3 (35) 35.0
 
Sept. 19, 2020, 10 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 12.0 μg/m3 (11) 7.8 μg/m3 (32) 32.0
 
Sept. 19, 2020, 9 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 14.0 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
Sept. 19, 2020, 8 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 7 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2020, 6 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 16.0 μg/m3 (15) 11.3 μg/m3 (47) 47.0
 
Sept. 19, 2020, 5 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 18.0 μg/m3 (16) 10.3 μg/m3 (43) 43.0
 
Sept. 19, 2020, 4 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 19.0 μg/m3 (17) 14.7 μg/m3 (56) 56.0
 
Sept. 19, 2020, 3 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 20.0 μg/m3 (18) 10.4 μg/m3 (43) 43.0
 
Sept. 19, 2020, 2 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 20.0 μg/m3 (18) 11.4 μg/m3 (48) 48.0
 
Sept. 19, 2020, 1 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 23.0 μg/m3 (21) 14.4 μg/m3 (55) 55.0
 
Sept. 19, 2020, midnight 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 23.0 μg/m3 (21) 17.3 μg/m3 (61) 61.0
 
Sept. 18, 2020, 11 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 22.0 μg/m3 (20) 16.8 μg/m3 (60) 60.0
 
Sept. 18, 2020, 10 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 18.0 μg/m3 (16) 12.9 μg/m3 (52) 52.0
 
Sept. 18, 2020, 9 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 19.0 μg/m3 (17) 14.9 μg/m3 (56) 56.0
 
Sept. 18, 2020, 8 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 24.0 μg/m3 (22) 16.0 μg/m3 (59) 59.0
 
Sept. 18, 2020, 7 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 21.0 μg/m3 (19) 13.1 μg/m3 (52) 52.0
 
Sept. 18, 2020, 6 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 21.0 μg/m3 (19) 16.0 μg/m3 (59) 59.0
 
Sept. 18, 2020, 5 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 20.0 μg/m3 (18) 11.6 μg/m3 (48) 48.0
 
Sept. 18, 2020, 4 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2020, 3 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 15.0 μg/m3 (14) 11.1 μg/m3 (46) 46.0
 
Sept. 18, 2020, 2 p.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 14.0 μg/m3 (13) 11.3 μg/m3 (47) 47.0
 
Sept. 18, 2020, 1 p.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 14.0 μg/m3 (13) 8.5 μg/m3 (35) 35.0
 
Sept. 18, 2020, noon 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 13.0 μg/m3 (12) 10.2 μg/m3 (42) 42.0
 
Sept. 18, 2020, 11 a.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 10 a.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 9 a.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 12.0 μg/m3 (11) 10.6 μg/m3 (44) 44.0
 
Sept. 18, 2020, 8 a.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 12.0 μg/m3 (11) 9.8 μg/m3 (41) 41.0
 
Sept. 18, 2020, 7 a.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 6 a.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 15.0 μg/m3 (14) 6.1 μg/m3 (25) 25.0