AQSQID: 300750001

Site Name: Broadus

Location: Broadus (Big Powder Riv E Rd), MT

Reporting: True, Located: True

Current AQI: 28.0

Broadus (Big Powder Riv E Rd) MT, US: 45.440295, -105.37028

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 5.0 μg/m3 (5) 5.7 μg/m3 (24) 25.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 25.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 5.0 μg/m3 (5) 3.9 μg/m3 (16) 27.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 4.7 μg/m3 (20) 28.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 6.4 μg/m3 (27) 28.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 12.0 μg/m3 (11) 3.0 μg/m3 (12) 29.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 9.0 μg/m3 (8) -0.5 μg/m3 (0) 29.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 29.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 28.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 1.7 μg/m3 (7) 28.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 3.9 μg/m3 (16) 28.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 14.0 μg/m3 (13) 0.1 μg/m3 (0) 28.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 17.0 μg/m3 (15) -0.9 μg/m3 (0) 28.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 28.0 μg/m3 (25) 3.8 μg/m3 (16) 27.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 27.0 μg/m3 (25) 5.1 μg/m3 (21) 26.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 23.0 μg/m3 (21) 6.1 μg/m3 (25) 26.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 15.0 μg/m3 (14) 3.6 μg/m3 (15) 25.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) 6.9 μg/m3 (29) 29.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 26.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 26.0 μg/m3 (24) -0.1 μg/m3 (0) 27.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 51.0 μg/m3 (46) 6.0 μg/m3 (25) 46.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 27.0 μg/m3 (25) 4.9 μg/m3 (20) 28.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 31.0 μg/m3 (28) 5.5 μg/m3 (23) 28.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 26.0 μg/m3 (24) -1.3 μg/m3 (0) 27.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 26.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 7.3 μg/m3 (30) 30.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 11.0 μg/m3 (10) 2.1 μg/m3 (9) 26.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 16.0 μg/m3 (15) 4.8 μg/m3 (20) 25.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 15.0 μg/m3 (14) 5.8 μg/m3 (24) 26.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 22.0 μg/m3 (20) -0.2 μg/m3 (0) 26.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 26.0 μg/m3 (24) 4.7 μg/m3 (20) 25.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 15.0 μg/m3 (14) 3.6 μg/m3 (15) 25.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 15.0 μg/m3 (14) 4.8 μg/m3 (20) 25.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 9.0 μg/m3 (8) 1.1 μg/m3 (5) 24.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 23.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 7.0 μg/m3 (6) 2.8 μg/m3 (12) 20.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 18.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 2.0 μg/m3 (2) 2.1 μg/m3 (9) 17.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 0.0 μg/m3 (0) -0.8 μg/m3 (0) 15.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 4.0 μg/m3 (4) -0.2 μg/m3 (0) 14.0
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 14.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 18.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 22.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 4.0 μg/m3 (4) 0.5 μg/m3 (2) 20.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A -4.0 μg/m3 (0) 3.2 μg/m3 (13) 20.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 19.0
 
April 1, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 12.0 μg/m3 (11) -0.9 μg/m3 (0) 18.0
 
April 1, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 22.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 7.0 μg/m3 (6) -2.6 μg/m3 (0) 21.0
 
April 1, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 3.0 μg/m3 (3) 2.9 μg/m3 (12) 22.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) 3.7 μg/m3 (15) 25.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 0.0 μg/m3 (0) 0.8 μg/m3 (3) 27.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) 2.2 μg/m3 (9) 28.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 31.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (3) 33.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 45.0 μg/m3 (41) 9.4 μg/m3 (39) 41.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 80.0 μg/m3 (62) 10.4 μg/m3 (43) 62.0
 
March 31, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 77.0 μg/m3 (61) 7.0 μg/m3 (29) 61.0
 
March 31, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 33.0 μg/m3 (30) 6.9 μg/m3 (29) 33.0
 
March 31, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 53.0 μg/m3 (48) 7.9 μg/m3 (33) 48.0
 
March 31, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 52.0 μg/m3 (47) 4.7 μg/m3 (20) 47.0
 
March 31, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 48.0 μg/m3 (44) 6.3 μg/m3 (26) 44.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 0.8 μg/m3 (3) 11.0
 
March 31, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 0.1 μg/m3 (0) 5.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 20.0
 
March 31, 2020, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 11.0 μg/m3 (10) 3.2 μg/m3 (13) 20.0
 
March 31, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) -1.0 μg/m3 (0) 17.0
 
March 31, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 10.0 μg/m3 (9) 1.9 μg/m3 (8) 18.0
 
March 31, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 10.0 μg/m3 (9) 2.9 μg/m3 (12) 18.0
 
March 31, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 9.0 μg/m3 (8) 2.3 μg/m3 (10) 15.0
 
March 31, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 4.0 μg/m3 (4) 3.9 μg/m3 (16) 16.0
 
March 31, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 12.0 μg/m3 (11) 3.7 μg/m3 (15) 18.0
 
March 31, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 5.0 μg/m3 (5) 1.9 μg/m3 (8) 21.0
 
March 31, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 2.1 μg/m3 (9) 28.0
 
March 31, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 0.4 μg/m3 (2) 28.0
 
March 31, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) 4.1 μg/m3 (17) 30.0
 
March 31, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) 5.6 μg/m3 (23) 30.0
 
March 31, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 3.0 μg/m3 (3) 4.7 μg/m3 (20) 35.0
 
March 30, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 14.0 μg/m3 (13) 3.2 μg/m3 (13) 36.0
 
March 30, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 48.0 μg/m3 (44) 7.4 μg/m3 (31) 44.0
 
March 30, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 72.0 μg/m3 (58) 13.4 μg/m3 (53) 58.0
 
March 30, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 9.0 μg/m3 (8) 1.8 μg/m3 (8) 35.0
 
March 30, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 12.0 μg/m3 (11) 2.3 μg/m3 (10) 35.0
 
March 30, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 9.0 μg/m3 (8) 3.2 μg/m3 (13) 32.0
 
March 30, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 17.0 μg/m3 (15) -0.3 μg/m3 (0) 30.0
 
March 30, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 29.0 μg/m3 (26) 1.1 μg/m3 (5) 29.0
 
March 30, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 54.0 μg/m3 (49) 6.9 μg/m3 (29) 49.0
 
March 30, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 35.0 μg/m3 (32) 2.7 μg/m3 (11) 32.0
 
March 30, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 30, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 30, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 30, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 30, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 30, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 29, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (9) 25.0
 
March 29, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 25.0
 
March 29, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 2.1 μg/m3 (9) 25.0
 
March 29, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 18.0 μg/m3 (16) 3.0 μg/m3 (12) 25.0
 
March 29, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 21.0 μg/m3 (19) 6.9 μg/m3 (29) 29.0
 
March 29, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 50.0 μg/m3 (45) 11.1 μg/m3 (46) 46.0
 
March 29, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 50.0 μg/m3 (45) 14.3 μg/m3 (55) 55.0
 
March 28, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 46.0 μg/m3 (42) 7.9 μg/m3 (33) 42.0
 
March 28, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 35.0 μg/m3 (32) 7.2 μg/m3 (30) 35.0
 
March 28, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 77.0 μg/m3 (61) 9.5 μg/m3 (40) 61.0
 
March 28, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 61.0 μg/m3 (53) 9.4 μg/m3 (39) 53.0
 
March 28, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 38.0 μg/m3 (35) 4.8 μg/m3 (20) 35.0
 
March 28, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 35.0 μg/m3 (32) 3.0 μg/m3 (12) 35.0
 
March 28, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 23.0 μg/m3 (21) 3.7 μg/m3 (15) 34.0
 
March 28, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 25.0 μg/m3 (23) 4.0 μg/m3 (17) 32.0
 
March 28, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 31.0 μg/m3 (28) 3.8 μg/m3 (16) 30.0
 
March 28, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 23.0 μg/m3 (21) 6.4 μg/m3 (27) 27.0
 
March 28, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 13.0 μg/m3 (12) 0.5 μg/m3 (2) 12.0
 
March 28, 2020, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 3.0 μg/m3 (3) 4.3 μg/m3 (18) 18.0
 
March 28, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 7.0 μg/m3 (6) 4.3 μg/m3 (18) 18.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 2.7 μg/m3 (11) 14.0
 
March 28, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 15.0
 
March 28, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 13.0 μg/m3 (12) 0.3 μg/m3 (1) 20.0
 
March 28, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 5.9 μg/m3 (25) 25.0
 
March 28, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 22.0 μg/m3 (20) 1.5 μg/m3 (6) 20.0
 
March 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 22.0 μg/m3 (20) 1.7 μg/m3 (7) 20.0
 
March 28, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 11.0 μg/m3 (10) 3.4 μg/m3 (14) 22.0
 
March 28, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 10.0 μg/m3 (9) 5.8 μg/m3 (24) 32.0
 
March 28, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 25.0 μg/m3 (23) 8.6 μg/m3 (36) 36.0
 
March 28, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 79.0 μg/m3 (62) 10.2 μg/m3 (42) 62.0
 
March 28, 2020, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 56.0 μg/m3 (50) -0.5 μg/m3 (0) 50.0
 
March 27, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 23.0 μg/m3 (21) 2.4 μg/m3 (10) 38.0
 
March 27, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 28.0 μg/m3 (25) 4.8 μg/m3 (20) 37.0
 
March 27, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 36.0 μg/m3 (33) 4.9 μg/m3 (20) 38.0
 
March 27, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 32.0 μg/m3 (29) 4.7 μg/m3 (20) 37.0
 
March 27, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 16.0 μg/m3 (15) 2.7 μg/m3 (11) 36.0
 
March 27, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 12.0 μg/m3 (11) -0.6 μg/m3 (0) 36.0
 
March 27, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 15.0 μg/m3 (14) 4.4 μg/m3 (18) 35.0
 
March 27, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 20.0 μg/m3 (18) -1.1 μg/m3 (0) 31.0
 
March 27, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) -1.0 μg/m3 (0) 28.0
 
March 27, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 21.0 μg/m3 (19) 2.9 μg/m3 (12) 24.0
 
March 27, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 11.0 μg/m3 (10) 2.4 μg/m3 (10) 16.0
 
March 27, 2020, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 21.0
 
March 27, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 17.0
 
March 27, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 5.0 μg/m3 (5) 0.2 μg/m3 (1) 16.0
 
March 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 5.1 μg/m3 (21) 21.0
 
March 27, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 2.3 μg/m3 (10) 15.0
 
March 27, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 19.0 μg/m3 (17) 2.3 μg/m3 (10) 18.0
 
March 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 1.6 μg/m3 (7) 18.0
 
March 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 4.4 μg/m3 (18) 23.0
 
March 27, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.0 μg/m3 (11) 4.0 μg/m3 (17) 24.0
 
March 27, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) 3.7 μg/m3 (15) 23.0
 
March 27, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) 4.2 μg/m3 (18) 30.0
 
March 27, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 21.0 μg/m3 (19) 1.8 μg/m3 (8) 30.0
 
March 27, 2020, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 51.0 μg/m3 (46) 5.8 μg/m3 (24) 46.0
 
March 26, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 41.0 μg/m3 (37) 2.8 μg/m3 (12) 37.0
 
March 26, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 28.0 μg/m3 (25) 4.5 μg/m3 (19) 35.0
 
March 26, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 14.0 μg/m3 (13) 0.5 μg/m3 (2) 34.0
 
March 26, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 35.0
 
March 26, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 33.0
 
March 26, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) -2.3 μg/m3 (0) 31.0
 
March 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 24.0
 
March 26, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 9.0 μg/m3 (8) 2.7 μg/m3 (11) 20.0
 
March 26, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 7.8 μg/m3 (32) 32.0
 
March 26, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 6.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 3.0 μg/m3 (3) 4.4 μg/m3 (18) 18.0
 
March 26, 2020, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 5.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
March 26, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 12.0 μg/m3 (11) 4.5 μg/m3 (19) 19.0
 
March 26, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 9.0 μg/m3 (8) 7.8 μg/m3 (32) 32.0
 
March 26, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 11.0
 
March 26, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 7.0 μg/m3 (6) 1.7 μg/m3 (7) 14.0
 
March 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 7.0 μg/m3 (6) -1.7 μg/m3 (0) 15.0
 
March 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 16.0