ID: 2421

AQSQID: 300750001

Site Name: Broadus

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

Updated: Sept. 29, 2020, 10:39 a.m.

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

Reporting: True, Located: True

Current AQI: 24.0

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
Sept. 29, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 7.0 μg/m3 (6) 5.7 μg/m3 (24) 24.0
 
Sept. 29, 2020, 8 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) 10.4 μg/m3 (43) 43.0
 
Sept. 29, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 15.0 μg/m3 (14) 5.3 μg/m3 (22) 22.0
 
Sept. 29, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 12.0 μg/m3 (11) 3.0 μg/m3 (12) 22.0
 
Sept. 29, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 36.0 μg/m3 (33) 13.1 μg/m3 (52) 52.0
 
Sept. 29, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 18.0 μg/m3 (16) 4.2 μg/m3 (18) 19.0
 
Sept. 29, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 20.0 μg/m3 (18) 5.6 μg/m3 (23) 23.0
 
Sept. 29, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Sept. 29, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 75.0 μg/m3 (60) 12.7 μg/m3 (51) 60.0
 
Sept. 29, 2020, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 96.0 μg/m3 (70) 14.5 μg/m3 (55) 70.0
 
Sept. 28, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 63.0 μg/m3 (54) 13.3 μg/m3 (53) 54.0
 
Sept. 28, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 42.0 μg/m3 (38) 4.0 μg/m3 (17) 38.0
 
Sept. 28, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 51.0 μg/m3 (46) 4.3 μg/m3 (18) 46.0
 
Sept. 28, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 37.0 μg/m3 (34) -0.9 μg/m3 (0) 34.0
 
Sept. 28, 2020, 7 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) -3.4 μg/m3 (0) 31.0
 
Sept. 28, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 29.0 μg/m3 (26) -4.6 μg/m3 (0) 30.0
 
Sept. 28, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 45.0 μg/m3 (41) N/A 41.0
 
Sept. 28, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 22.0 μg/m3 (20) -2.9 μg/m3 (0) 28.0
 
Sept. 28, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 59.3 μg/m3 (152) 152.0
 
Sept. 28, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 13.0 μg/m3 (12) 27.8 μg/m3 (84) 84.0
 
Sept. 28, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 5.3 μg/m3 (22) 22.0
 
Sept. 28, 2020, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 22.0
 
Sept. 28, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 22.0
 
Sept. 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 1.6 μg/m3 (7) 22.0
 
Sept. 28, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 23.0
 
Sept. 28, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) 2.2 μg/m3 (9) 22.0
 
Sept. 28, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 1.0 μg/m3 (1) 5.3 μg/m3 (22) 22.0
 
Sept. 28, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 22.0
 
Sept. 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 7.0 μg/m3 (6) 3.5 μg/m3 (15) 22.0
 
Sept. 28, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) 6.3 μg/m3 (26) 26.0
 
Sept. 28, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) -0.1 μg/m3 (0) 25.0
 
Sept. 28, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 25.0
 
Sept. 28, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 1.8 μg/m3 (8) 28.0
 
Sept. 28, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) 4.3 μg/m3 (18) 30.0
 
Sept. 27, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 14.0 μg/m3 (13) 9.9 μg/m3 (41) 41.0
 
Sept. 27, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 16.0 μg/m3 (15) 3.7 μg/m3 (15) 30.0
 
Sept. 27, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 13.0 μg/m3 (12) 3.7 μg/m3 (15) 29.0
 
Sept. 27, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 14.0 μg/m3 (13) 13.4 μg/m3 (53) 53.0
 
Sept. 27, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 10.0 μg/m3 (9) 3.9 μg/m3 (16) 28.0
 
Sept. 27, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 10.0 μg/m3 (9) 6.9 μg/m3 (29) 29.0
 
Sept. 27, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 26.0
 
Sept. 27, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 18.0 μg/m3 (16) 3.8 μg/m3 (16) 28.0
 
Sept. 27, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 20.0 μg/m3 (18) 2.4 μg/m3 (10) 28.0
 
Sept. 27, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 26.0 μg/m3 (24) 7.3 μg/m3 (30) 30.0
 
Sept. 27, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 28.0 μg/m3 (25) 5.8 μg/m3 (24) 25.0
 
Sept. 27, 2020, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 5.0 μg/m3 (5) -0.4 μg/m3 (0) 25.0
 
Sept. 27, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) -0.8 μg/m3 (0) 26.0
 
Sept. 27, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) 1.7 μg/m3 (7) 27.0
 
Sept. 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) -0.5 μg/m3 (0) 28.0
 
Sept. 27, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 13.0 μg/m3 (12) 3.2 μg/m3 (13) 28.0
 
Sept. 27, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 11.0 μg/m3 (10) 14.6 μg/m3 (56) 56.0
 
Sept. 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 7.0 μg/m3 (6) 12.5 μg/m3 (51) 51.0
 
Sept. 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 11.0 μg/m3 (10) 16.8 μg/m3 (60) 60.0
 
Sept. 27, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 10.0 μg/m3 (9) 2.7 μg/m3 (11) 17.0
 
Sept. 27, 2020, 3 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) 0.7 μg/m3 (3) 21.0
 
Sept. 27, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 25.0
 
Sept. 27, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 19.0 μg/m3 (17) 13.5 μg/m3 (53) 53.0
 
Sept. 27, 2020, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 19.0 μg/m3 (17) 23.5 μg/m3 (74) 74.0
 
Sept. 26, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 15.0 μg/m3 (14) 0.1 μg/m3 (0) 31.0
 
Sept. 26, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 24.0 μg/m3 (22) 7.7 μg/m3 (32) 34.0
 
Sept. 26, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 36.0 μg/m3 (33) 2.4 μg/m3 (10) 34.0
 
Sept. 26, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 31.0 μg/m3 (28) 7.7 μg/m3 (32) 35.0
 
Sept. 26, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 19.0 μg/m3 (17) 7.0 μg/m3 (29) 35.0
 
Sept. 26, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 2.3 μg/m3 (10) 32.0
 
Sept. 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 13.9 μg/m3 (54) 54.0
 
Sept. 26, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A -1.0 μg/m3 (0) 20.3 μg/m3 (68) 68.0
 
Sept. 26, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 0.0 μg/m3 (0) 3.5 μg/m3 (15) 28.0
 
Sept. 26, 2020, 2 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) 6.1 μg/m3 (25) 28.0
 
Sept. 26, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 21.0 μg/m3 (19) 2.0 μg/m3 (8) 31.0
 
Sept. 26, 2020, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 16.0 μg/m3 (15) 2.5 μg/m3 (10) 35.0
 
Sept. 26, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 15.0 μg/m3 (14) 3.0 μg/m3 (12) 35.0
 
Sept. 26, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 11.0 μg/m3 (10) 2.6 μg/m3 (11) 35.0
 
Sept. 26, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 25.0 μg/m3 (23) 6.1 μg/m3 (25) 32.0
 
Sept. 26, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 28.0 μg/m3 (25) 16.6 μg/m3 (60) 60.0
 
Sept. 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 38.0 μg/m3 (35) 13.0 μg/m3 (52) 52.0
 
Sept. 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 29.0 μg/m3 (26) 12.5 μg/m3 (51) 51.0
 
Sept. 26, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
Sept. 26, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 20.0 μg/m3 (18) 8.9 μg/m3 (37) 37.0
 
Sept. 26, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 34.0 μg/m3 (31) 14.6 μg/m3 (56) 56.0
 
Sept. 26, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 83.0 μg/m3 (64) 27.2 μg/m3 (82) 82.0
 
Sept. 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 115.0 μg/m3 (80) 32.5 μg/m3 (94) 94.0
 
Sept. 26, 2020, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 58.0 μg/m3 (52) 19.0 μg/m3 (65) 65.0
 
Sept. 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 11.0 μg/m3 (10) 2.6 μg/m3 (11) 32.0
 
Sept. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Sept. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 32.0
 
Sept. 25, 2020, 8 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) 0.7 μg/m3 (3) 32.0
 
Sept. 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 16.0 μg/m3 (15) 2.9 μg/m3 (12) 33.0
 
Sept. 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 42.0 μg/m3 (38) 7.8 μg/m3 (32) 38.0
 
Sept. 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 33.0 μg/m3 (30) 6.3 μg/m3 (26) 32.0
 
Sept. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 103.0 μg/m3 (74) 23.7 μg/m3 (75) 75.0
 
Sept. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 378.0 μg/m3 (233) 85.1 μg/m3 (166) 233.0
 
Sept. 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 601.0 μg/m3 (496) 124.4 μg/m3 (186) 496.0
 
Sept. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 87.0 μg/m3 (66) 17.5 μg/m3 (62) 66.0
 
Sept. 25, 2020, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 23.0 μg/m3 (21) 10.8 μg/m3 (45) 45.0
 
Sept. 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 24.0 μg/m3 (22) 10.9 μg/m3 (45) 45.0
 
Sept. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 7.0 μg/m3 (6) 4.3 μg/m3 (18) 24.0
 
Sept. 25, 2020, 9 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) 2.3 μg/m3 (10) 25.0
 
Sept. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 8.0 μg/m3 (7) -3.3 μg/m3 (0) 29.0
 
Sept. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 15.0 μg/m3 (14) -0.3 μg/m3 (0) 30.0
 
Sept. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) -2.1 μg/m3 (0) 31.0
 
Sept. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 3.7 μg/m3 (15) 32.0
 
Sept. 25, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 39.0 μg/m3 (35) 10.9 μg/m3 (45) 45.0
 
Sept. 25, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 11.8 μg/m3 (49) 49.0
 
Sept. 25, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 22.1 μg/m3 (71) 71.0
 
Sept. 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 214.0 μg/m3 (130) 44.0 μg/m3 (121) 130.0
 
Sept. 25, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 56.4 μg/m3 (150) 150.0
 
Sept. 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 85.0 μg/m3 (65) 23.9 μg/m3 (75) 75.0
 
Sept. 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 30.0 μg/m3 (27) 11.9 μg/m3 (50) 50.0
 
Sept. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A 26.0 μg/m3 (24) 15.0 μg/m3 (56) 56.0
 
Sept. 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 28.0 μg/m3 (25) 15.5 μg/m3 (57) 57.0
 
Sept. 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 30.0 μg/m3 (27) 15.2 μg/m3 (57) 57.0
 
Sept. 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 32.0 μg/m3 (29) 15.1 μg/m3 (57) 57.0
 
Sept. 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 33.0 μg/m3 (30) 19.7 μg/m3 (66) 66.0
 
Sept. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 32.0 μg/m3 (29) 17.4 μg/m3 (61) 61.0
 
Sept. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 29.0 μg/m3 (26) 7.2 μg/m3 (30) 30.0
 
Sept. 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 26.0 μg/m3 (24) 11.9 μg/m3 (50) 50.0
 
Sept. 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 23.0 μg/m3 (21) 13.2 μg/m3 (53) 53.0
 
Sept. 24, 2020, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 23.0 μg/m3 (21) 18.8 μg/m3 (64) 64.0
 
Sept. 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 26.0 μg/m3 (24) 14.7 μg/m3 (56) 56.0
 
Sept. 24, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 31.0 μg/m3 (28) 18.8 μg/m3 (64) 64.0
 
Sept. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 36.0 μg/m3 (33) 26.0 μg/m3 (80) 80.0
 
Sept. 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 44.0 μg/m3 (40) 27.2 μg/m3 (82) 82.0
 
Sept. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 50.0 μg/m3 (45) 24.9 μg/m3 (77) 77.0
 
Sept. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 53.0 μg/m3 (48) 32.9 μg/m3 (94) 94.0
 
Sept. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 107.0 μg/m3 (76) 44.1 μg/m3 (122) 122.0
 
Sept. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 83.8 μg/m3 (165) 165.0
 
Sept. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 75.8 μg/m3 (161) 161.0
 
Sept. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 37.0 μg/m3 (34) 27.5 μg/m3 (83) 83.0
 
Sept. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 30.3 μg/m3 (89) 89.0
 
Sept. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 179.0 μg/m3 (112) 48.4 μg/m3 (132) 132.0
 
Sept. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 180.0 μg/m3 (112) 40.9 μg/m3 (114) 114.0
 
Sept. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 101.0 μg/m3 (73) 36.5 μg/m3 (102) 102.0
 
Sept. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 82.0 μg/m3 (64) 27.1 μg/m3 (82) 82.0
 
Sept. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 79.0 μg/m3 (62) 24.0 μg/m3 (76) 76.0
 
Sept. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 87.0 μg/m3 (66) 27.3 μg/m3 (83) 83.0
 
Sept. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 50.0 μg/m3 (45) 19.3 μg/m3 (66) 66.0
 
Sept. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 65.0 μg/m3 (55) 24.1 μg/m3 (76) 76.0
 
Sept. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 118.0 μg/m3 (82) 33.5 μg/m3 (96) 96.0
 
Sept. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 148.0 μg/m3 (96) 45.0 μg/m3 (124) 124.0
 
Sept. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 175.0 μg/m3 (110) 39.8 μg/m3 (111) 111.0
 
Sept. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 41.2 μg/m3 (114) 114.0
 
Sept. 23, 2020, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 69.0 μg/m3 (57) 21.9 μg/m3 (71) 71.0
 
Sept. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 20.0 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
Sept. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 19.0 μg/m3 (17) 13.1 μg/m3 (52) 52.0
 
Sept. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 19.0 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
Sept. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 17.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
Sept. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 22.0 μg/m3 (20) 12.4 μg/m3 (51) 51.0
 
Sept. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 29.0 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
Sept. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 55.0 μg/m3 (50) 18.4 μg/m3 (64) 64.0
 
Sept. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 92.0 μg/m3 (68) 26.8 μg/m3 (81) 81.0
 
Sept. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 109.0 μg/m3 (77) 30.3 μg/m3 (89) 89.0
 
Sept. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 174.0 μg/m3 (110) 42.5 μg/m3 (118) 118.0
 
Sept. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 101.4 μg/m3 (174) 174.0
 
Sept. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 31.0 μg/m3 (28) 16.2 μg/m3 (59) 59.0
 
Sept. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A 47.0 μg/m3 (43) 17.1 μg/m3 (61) 61.0
 
Sept. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A 23.0 μg/m3 (21) 12.4 μg/m3 (51) 51.0
 
Sept. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (51) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 51.0
 
Sept. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A 14.0 μg/m3 (13) 10.3 μg/m3 (43) 49.0
 
Sept. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A 17.0 μg/m3 (15) 5.8 μg/m3 (24) 48.0
 
Sept. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A 19.0 μg/m3 (17) 11.2 μg/m3 (47) 47.0
 
Sept. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 27.0 μg/m3 (25) 13.4 μg/m3 (53) 53.0
 
Sept. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 63.0 μg/m3 (54) 16.1 μg/m3 (59) 59.0
 
Sept. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 295.0 μg/m3 (170) 53.2 μg/m3 (144) 170.0
 
Sept. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 396.0 μg/m3 (259) 67.3 μg/m3 (156) 259.0
 
Sept. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 146.0 μg/m3 (96) 29.4 μg/m3 (87) 96.0
 
Sept. 22, 2020, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 39.0 μg/m3 (35) 17.3 μg/m3 (61) 61.0
 
Sept. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 28.0 μg/m3 (25) 9.8 μg/m3 (41) 41.0
 
Sept. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 30.0 μg/m3 (27) 13.1 μg/m3 (52) 52.0