AQSQID: 000094401

Site Name: St. Lina

Location: Co Of Saint Paul No. 19 (Range Rd 110), CC

Reporting: True, Located: True

Current AQI: 41.0

Co Of Saint Paul No. 19 (Range Rd 110) CC, CA: 54.216473, -111.50264

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 6, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 9.8 μg/m3 (41) 41.0
 
April 6, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 7.1 μg/m3 (30) 34.0
 
April 6, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (28) 28.0
 
April 6, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 5.6 μg/m3 (23) 31.0
 
April 6, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.6 μg/m3 (19) 30.0
 
April 6, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 16.2 μg/m3 (59) 59.0
 
April 6, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 7.8 μg/m3 (32) 32.0
 
April 6, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 6.6 μg/m3 (28) 31.0
 
April 6, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 7.6 μg/m3 (32) 32.0
 
April 6, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 7.6 μg/m3 (32) 32.0
 
April 6, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 7.7 μg/m3 (32) 32.0
 
April 6, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 7.4 μg/m3 (31) 32.0
 
April 6, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 7.7 μg/m3 (32) 32.0
 
April 6, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 7.4 μg/m3 (31) 32.0
 
April 6, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 7.4 μg/m3 (31) 32.0
 
April 6, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 7.0 μg/m3 (29) 33.0
 
April 6, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 7.5 μg/m3 (31) 34.0
 
April 6, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 6.9 μg/m3 (29) 35.0
 
April 6, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 6.4 μg/m3 (27) 36.0
 
April 5, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.6 μg/m3 (23) 36.0
 
April 5, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.9 μg/m3 (20) 35.0
 
April 5, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.9 μg/m3 (20) 35.0
 
April 5, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 4.7 μg/m3 (20) 34.0
 
April 5, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 4.4 μg/m3 (18) 32.0
 
April 5, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.9 μg/m3 (16) 32.0
 
April 5, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.4 μg/m3 (18) 32.0
 
April 5, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.6 μg/m3 (15) 32.0
 
April 5, 2020, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.7 μg/m3 (15) 32.0
 
April 5, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.9 μg/m3 (16) 32.0
 
April 5, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 3.9 μg/m3 (16) 33.0
 
April 5, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 4.2 μg/m3 (18) 34.0
 
April 5, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 4.1 μg/m3 (17) 34.0
 
April 5, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.3 μg/m3 (18) 35.0
 
April 5, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.4 μg/m3 (18) 35.0
 
April 5, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 4.9 μg/m3 (20) 36.0
 
April 5, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.4 μg/m3 (23) 36.0
 
April 5, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 5.4 μg/m3 (23) 37.0
 
April 4, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 4.3 μg/m3 (18) 38.0
 
April 4, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
April 4, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 4.8 μg/m3 (20) 38.0
 
April 4, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
April 4, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.8 μg/m3 (20) 35.0
 
April 4, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
April 4, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.5 μg/m3 (15) 34.0
 
April 4, 2020, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
April 4, 2020, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.2 μg/m3 (22) 28.0
 
April 4, 2020, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.9 μg/m3 (20) 30.0
 
April 4, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 5.1 μg/m3 (21) 32.0
 
April 4, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 4.4 μg/m3 (18) 34.0
 
April 4, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.9 μg/m3 (16) 35.0
 
April 4, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.9 μg/m3 (16) 35.0
 
April 4, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
April 4, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.9 μg/m3 (16) 34.0
 
April 4, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
April 4, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
April 4, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.9 μg/m3 (12) 35.0
 
April 4, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.9 μg/m3 (12) 35.0
 
April 4, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
April 4, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
April 3, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.7 μg/m3 (15) 35.0
 
April 3, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
April 3, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.7 μg/m3 (15) 35.0
 
April 3, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (38) 38.0
 
April 3, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 5.5 μg/m3 (23) 34.0
 
April 3, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 6.2 μg/m3 (26) 33.0
 
April 3, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 6.9 μg/m3 (29) 32.0
 
April 3, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 7.2 μg/m3 (30) 32.0
 
April 3, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 9.5 μg/m3 (40) 40.0
 
April 3, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 8.2 μg/m3 (34) 34.0
 
April 3, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 5.6 μg/m3 (23) 32.0
 
April 3, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 5.9 μg/m3 (25) 32.0
 
April 3, 2020, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 5.8 μg/m3 (24) 30.0
 
April 3, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 5.3 μg/m3 (22) 30.0
 
April 3, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 5.1 μg/m3 (21) 30.0
 
April 3, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 4.4 μg/m3 (18) 31.0
 
April 3, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.9 μg/m3 (16) 31.0
 
April 3, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.7 μg/m3 (15) 32.0
 
April 3, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
April 3, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
April 3, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
April 3, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
April 3, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
April 2, 2020, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.4 μg/m3 (10) 31.0
 
April 2, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.7 μg/m3 (11) 31.0
 
April 2, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.9 μg/m3 (12) 30.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
April 2, 2020, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 3.2 μg/m3 (13) 29.0
 
April 2, 2020, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.1 μg/m3 (13) 28.0
 
April 2, 2020, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 3.5 μg/m3 (15) 26.0
 
April 2, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 4.3 μg/m3 (18) 24.0
 
April 2, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 4.5 μg/m3 (19) 23.0
 
April 2, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 4.3 μg/m3 (18) 23.0
 
April 2, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 4.4 μg/m3 (18) 23.0
 
April 2, 2020, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 4.5 μg/m3 (19) 24.0
 
April 2, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 4.4 μg/m3 (18) 24.0
 
April 2, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 4.5 μg/m3 (19) 25.0
 
April 2, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
April 2, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
April 2, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 4.5 μg/m3 (19) 26.0
 
April 2, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 2.8 μg/m3 (12) 26.0
 
April 2, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 2.7 μg/m3 (11) 26.0
 
April 2, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 2.6 μg/m3 (11) 27.0
 
April 2, 2020, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
April 1, 2020, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
April 1, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.6 μg/m3 (11) 28.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
April 1, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A 3.2 μg/m3 (13) 28.0
 
April 1, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
April 1, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 3.1 μg/m3 (13) 27.0
 
April 1, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 3.3 μg/m3 (14) 27.0
 
April 1, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.3 μg/m3 (14) 27.0
 
April 1, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 3.4 μg/m3 (14) 26.0
 
April 1, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 4.6 μg/m3 (19) 24.0
 
April 1, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.8 μg/m3 (20) 23.0
 
April 1, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
April 1, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 3.4 μg/m3 (14) 23.0
 
April 1, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 3.6 μg/m3 (15) 23.0
 
April 1, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 2.9 μg/m3 (12) 23.0
 
April 1, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.7 μg/m3 (11) 23.0
 
April 1, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.5 μg/m3 (10) 23.0
 
April 1, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
April 1, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.4 μg/m3 (10) 25.0
 
April 1, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.9 μg/m3 (12) 24.0
 
April 1, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 3.2 μg/m3 (13) 24.0
 
April 1, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 3.3 μg/m3 (14) 25.0
 
March 31, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 3.1 μg/m3 (13) 25.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
March 31, 2020, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 3.3 μg/m3 (14) 26.0
 
March 31, 2020, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
March 31, 2020, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 3.6 μg/m3 (15) 26.0
 
March 31, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 2.8 μg/m3 (12) 26.0
 
March 31, 2020, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
March 31, 2020, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
March 31, 2020, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
March 31, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
March 31, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 6.4 μg/m3 (27) 27.0
 
March 31, 2020, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.5 μg/m3 (23) 23.0
 
March 31, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
March 31, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.2 μg/m3 (9) 23.0
 
March 31, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 2.3 μg/m3 (10) 22.0
 
March 31, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.7 μg/m3 (11) 22.0
 
March 31, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.1 μg/m3 (13) 22.0
 
March 31, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
March 31, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.3 μg/m3 (14) 23.0
 
March 31, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
March 31, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.3 μg/m3 (18) 22.0
 
March 31, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 5.1 μg/m3 (21) 22.0
 
March 31, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 5.1 μg/m3 (21) 23.0
 
March 30, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
March 30, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 4.9 μg/m3 (20) 24.0
 
March 30, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 6.2 μg/m3 (26) 26.0
 
March 30, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.5 μg/m3 (23) 23.0
 
March 30, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.8 μg/m3 (20) 23.0
 
March 30, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
March 30, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.5 μg/m3 (15) 22.0
 
March 30, 2020, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.7 μg/m3 (15) 22.0
 
March 30, 2020, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.2 μg/m3 (18) 22.0
 
March 30, 2020, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 3.9 μg/m3 (16) 21.0
 
March 30, 2020, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 4.9 μg/m3 (20) 21.0
 
March 30, 2020, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.2 μg/m3 (22) 22.0
 
March 30, 2020, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 5.9 μg/m3 (25) 25.0
 
March 30, 2020, 10 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 7.7 μg/m3 (32) 32.0
 
March 30, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 7.8 μg/m3 (32) 32.0
 
March 30, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 5.2 μg/m3 (22) 22.0
 
March 30, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.9 μg/m3 (20) 22.0
 
March 30, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
March 30, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 5.3 μg/m3 (22) 22.0